{"id":1776,"date":"2026-10-26T08:00:00","date_gmt":"2026-10-26T08:00:00","guid":{"rendered":"https:\/\/www.seggdsb.com\/?p=1776"},"modified":"2026-10-16T00:28:48","modified_gmt":"2026-10-16T00:28:48","slug":"flange-sizes-a-field-measurement-sheet-for-small-bore-connections","status":"publish","type":"post","link":"https:\/\/www.seggdsb.com\/ru\/flange-sizes-a-field-measurement-sheet-for-small-bore-connections\/","title":{"rendered":"\u0420\u0430\u0437\u043c\u0435\u0440\u044b \u0444\u043b\u0430\u043d\u0446\u0435\u0432: \u041f\u043e\u043b\u0435\u0432\u043e\u0439 \u0438\u0437\u043c\u0435\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u043b\u0438\u0441\u0442 \u0434\u043b\u044f \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0439 \u043c\u0430\u043b\u043e\u0433\u043e \u0434\u0438\u0430\u043c\u0435\u0442\u0440\u0430"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>\u041e\u0433\u043b\u0430\u0432\u043b\u0435\u043d\u0438\u0435<\/h2><nav><ul><li><a href=\"#section-1\">\u0420\u0430\u0437\u043c\u0435\u0440\u044b \u0444\u043b\u0430\u043d\u0446\u0435\u0432: \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0439 \u0440\u0430\u0437\u043c\u0435\u0440 \u043e\u0442 \u043f\u0440\u0438\u0433\u043e\u0434\u043d\u043e\u0441\u0442\u0438 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0438 \u0442\u0435\u043c\u043f\u0435\u0440\u0430\u0442\u0443\u0440\u044b<\/a><\/li><li><a href=\"#section-2\">\u041f\u043e\u0441\u0442\u0440\u043e\u0439\u0442\u0435 \u0438\u0437\u043c\u0435\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u043b\u0438\u0441\u0442 \u0438\u0437 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430<\/a><\/li><li><a href=\"#section-3\">\u0421\u0434\u0435\u043b\u0430\u0439\u0442\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 \u043e\u0442\u0432\u0435\u0440\u0441\u0442\u0438\u044f \u0438 \u0442\u0440\u0443\u0431\u044b \u044f\u0432\u043d\u044b\u043c<\/a><\/li><li><a href=\"#section-4\">\u0420\u0430\u0437\u043c\u0435\u0440\u044b \u0444\u043b\u0430\u043d\u0446\u0435\u0432: \u0441\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435 \u043d\u043e\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u043e\u0431\u043e\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0438 \u0435\u0434\u0438\u043d\u0438\u0446\u044b \u0438\u0437\u043c\u0435\u0440\u0435\u043d\u0438\u044f \u0432 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438<\/a><\/li><li><a href=\"#section-5\">\u0421\u043e\u0445\u0440\u0430\u043d\u044f\u0439\u0442\u0435 \u0438\u0434\u0435\u043d\u0442\u0438\u0447\u043d\u043e\u0441\u0442\u044c \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u0430 \u043f\u043e\u0441\u0440\u0435\u0434\u0441\u0442\u0432\u043e\u043c \u043c\u0435\u0445\u0430\u043d\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438<\/a><\/li><li><a href=\"#section-6\">\u0420\u0430\u0437\u043c\u0435\u0440\u044b \u0444\u043b\u0430\u043d\u0446\u0435\u0432: \u0440\u0430\u0437\u0440\u0435\u0448\u0438\u0442\u0435 \u043a\u043e\u043d\u0444\u043b\u0438\u043a\u0442\u044b \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u043e\u0432 \u043f\u0435\u0440\u0435\u0434 \u0440\u0435\u0437\u043a\u043e\u0439 \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u0430<\/a><\/li><li><a href=\"#section-7\">\u041a\u043e\u043e\u0440\u0434\u0438\u043d\u0438\u0440\u0443\u0439\u0442\u0435 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u043e \u0434\u043b\u044f \u0441\u0431\u043e\u0440\u043a\u0438 \u0438 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u044f<\/a><\/li><li><a href=\"#section-8\">\u0420\u0430\u0437\u043c\u0435\u0440\u044b \u0444\u043b\u0430\u043d\u0446\u0435\u0432: \u043f\u0440\u0435\u0432\u0440\u0430\u0442\u0438\u0442\u0435 \u043e\u0431\u0437\u043e\u0440 \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u0432 \u0432 \u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0435<\/a><\/li><li><a href=\"#project-review\">\u041d\u0430\u043d\u0435\u0441\u0438\u0442\u0435 \u043e\u0442\u0437\u044b\u0432 \u043d\u0430 \u0444\u043b\u0430\u043d\u0435\u0446 \u0434\u043b\u044f \u0441\u0432\u0430\u0440\u043d\u043e\u0433\u043e \u0448\u0432\u0430<\/a><\/li><li><a href=\"#comparison\">\u0420\u0430\u0437\u043c\u0435\u0440\u044b \u0444\u043b\u0430\u043d\u0446\u0435\u0432: \u0441\u0440\u0430\u0432\u043d\u0438\u0442\u0435 \u0434\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u0430<\/a><\/li><li><a href=\"#enquiry\">\u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u044c\u0442\u0435 \u0437\u0430\u043f\u0440\u043e\u0441, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u043e\u0436\u043d\u043e \u043e\u0442\u0432\u0435\u0442\u0438\u0442\u044c<\/a><\/li><li><a href=\"#quotation\">\u0417\u0430\u043f\u0440\u043e\u0441\u0438\u0442\u0435 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u043f\u043e \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u043e\u043c\u0443 \u043f\u0440\u043e\u0435\u043a\u0442\u0443<\/a><\/li><li><a href=\"#faq\">\u0427\u0430\u0441\u0442\u043e \u0437\u0430\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0435 \u0432\u043e\u043f\u0440\u043e\u0441\u044b<\/a><\/li><\/ul><\/nav><\/div>\n\n\n<p class=\"wp-block-paragraph\">Flange sizes decisions become easier when the enquiry starts with the actual connection and the job it must perform. This guide focuses on a Field Measurement Sheet for Small-Bore Connections. Measure the socket and the mating flange separately. A correct bolt pattern can conceal an incompatible socket or pipe outside diameter, especially when a maintenance store mixes metric and inch stock.<\/p>\n\n\n<p class=\"wp-block-paragraph\">For a project involving socket weld flange, the practical starting point is a review of mating face, bore, drilling, material grade and rating basis. Keep those requirements together with the drawing revision, quantity and delivery scope. The following flange sizes review moves from the physical interface to the evidence needed for purchasing and handover. It is intended for buyers, estimators and technical reviewers who need a clear specification rather than a catalogue description alone.<\/p>\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/Socket-Weld-Flange-1.jpg\" alt=\"flange sizes \u2014 socket-weld flange with a stepped bore\" class=\"wp-image-175\" srcset=\"https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/Socket-Weld-Flange-1.jpg 800w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/Socket-Weld-Flange-1-300x300.jpg 300w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/Socket-Weld-Flange-1-150x150.jpg 150w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/Socket-Weld-Flange-1-768x768.jpg 768w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/Socket-Weld-Flange-1-600x600.jpg 600w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/Socket-Weld-Flange-1-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"section-1\">\u0420\u0430\u0437\u043c\u0435\u0440\u044b \u0444\u043b\u0430\u043d\u0446\u0435\u0432: \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0439 \u0440\u0430\u0437\u043c\u0435\u0440 \u043e\u0442 \u043f\u0440\u0438\u0433\u043e\u0434\u043d\u043e\u0441\u0442\u0438 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0438 \u0442\u0435\u043c\u043f\u0435\u0440\u0430\u0442\u0443\u0440\u044b<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Nominal size identifies the connection family; it does not establish allowable pressure. A rating class or PN designation must be interpreted through the applicable standard, material and design temperature. Include normal operation, relevant design extremes and any separate test condition in the engineering enquiry. For flange sizes, ask the reviewer to cite the actual rating basis. A supplier&#x27;s statement that a component is high pressure provides no usable acceptance limit. If the material group or design temperature is missing, keep the selection open instead of converting the class number into a pressure value.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"section-2\">\u041f\u043e\u0441\u0442\u0440\u043e\u0439\u0442\u0435 \u0438\u0437\u043c\u0435\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u043b\u0438\u0441\u0442 \u0438\u0437 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Begin with the surfaces and centerlines that determine whether the part fits. Record the nominal designation separately from the dimensions that will actually be measured. For flange sizes, the controlling features are mating face, bore, drilling, material grade and rating basis. Give each feature a drawing reference, unit, tolerance source and recorded result. This arrangement exposes missing information before anyone starts measuring. It also prevents a receiving inspector from treating a convenient catalogue value as an acceptance limit. The sheet should identify the drawing revision used, because a dimension can be measured accurately and still be compared with an obsolete requirement.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"section-3\">\u0421\u0434\u0435\u043b\u0430\u0439\u0442\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 \u043e\u0442\u0432\u0435\u0440\u0441\u0442\u0438\u044f \u0438 \u0442\u0440\u0443\u0431\u044b \u044f\u0432\u043d\u044b\u043c<\/h2>\n\n\n<p class=\"wp-block-paragraph\">The pipe-side connection is easy to overlook when most attention is given to bolt holes. A weld-neck bore must suit the approved pipe and weld-end arrangement. A slip-on part needs the correct fit over the pipe, while socket weld and threaded parts have different interface requirements. For flange sizes, record the connection type on the item drawing and cross-reference the pipe outside diameter and wall. Any mismatch requiring machining or a transition should be reviewed before dispatch. Site improvisation can erase the dimensional and material basis on which the part was purchased.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"section-4\">\u0420\u0430\u0437\u043c\u0435\u0440\u044b \u0444\u043b\u0430\u043d\u0446\u0435\u0432: \u0441\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435 \u043d\u043e\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u043e\u0431\u043e\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0438 \u0435\u0434\u0438\u043d\u0438\u0446\u044b \u0438\u0437\u043c\u0435\u0440\u0435\u043d\u0438\u044f \u0432 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Do not turn a nominal size into a physical measurement without checking the applicable dimensional system. Inch-based and metric designations may refer to established size series rather than direct arithmetic conversions. For flange sizes, retain the source units alongside any conversion needed for purchasing or field work. Converting a number does not establish interchangeability between standards. If a drawing and quotation use different conventions, have the supplier show the matching dimensions explicitly. A consistent unit policy is especially valuable when a replacement must connect to equipment that was installed under an older specification.<\/p>\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"550\" src=\"https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-31.jpg\" alt=\"\u041a\u0430\u043b\u0438\u043f\u0435\u0440 \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u0442 \u0440\u0430\u0437\u043c\u0435\u0440 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u043d\u043e\u0433\u043e \u0444\u043b\u0430\u043d\u0446\u0430\" class=\"wp-image-633\" srcset=\"https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-31.jpg 800w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-31-300x206.jpg 300w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-31-768x528.jpg 768w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-31-600x413.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"section-5\">\u0421\u043e\u0445\u0440\u0430\u043d\u044f\u0439\u0442\u0435 \u0438\u0434\u0435\u043d\u0442\u0438\u0447\u043d\u043e\u0441\u0442\u044c \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u0430 \u043f\u043e\u0441\u0440\u0435\u0434\u0441\u0442\u0432\u043e\u043c \u043c\u0435\u0445\u0430\u043d\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Flange orders can involve forging, heat treatment, machining and inspection at different stages or facilities. The records should show how the material identity survives that route. For flange sizes, request the ordered material specification and grade, then reconcile heat identification with the certificate and packing list. An attractive surface finish does not demonstrate chemistry, mechanical properties or heat treatment. Where supplementary examination or identification is required, define its extent and acceptance basis in the order. Avoid applying a pipe material designation to a flange merely because both components are made from carbon steel.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"section-6\">\u0420\u0430\u0437\u043c\u0435\u0440\u044b \u0444\u043b\u0430\u043d\u0446\u0435\u0432: \u0440\u0430\u0437\u0440\u0435\u0448\u0438\u0442\u0435 \u043a\u043e\u043d\u0444\u043b\u0438\u043a\u0442\u044b \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u043e\u0432 \u043f\u0435\u0440\u0435\u0434 \u0440\u0435\u0437\u043a\u043e\u0439 \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u0430<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Product names, photographs and downloadable tables can disagree. For flange sizes, treat a conflict as a question to resolve with a dimensioned drawing or a verified sample. Record the supplier&#x27;s written interpretation and make sure it appears in the accepted order. Do not choose whichever source seems more convenient to the current layout. If the proposed part differs from the design, obtain an explicit revision or deviation decision. Keeping this exchange in the purchase file gives receiving and fabrication teams a common reference and reduces the risk of a later argument about what was actually ordered.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"section-7\">\u041a\u043e\u043e\u0440\u0434\u0438\u043d\u0438\u0440\u0443\u0439\u0442\u0435 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u043e \u0434\u043b\u044f \u0441\u0431\u043e\u0440\u043a\u0438 \u0438 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u044f<\/h2>\n\n\n<p class=\"wp-block-paragraph\">The installed joint needs room for the selected fasteners, tools and any planned disassembly. Check the space around nearby steelwork, insulation and equipment before finalizing the connection. A discussion of flange sizes should identify who provides the gasket and bolting, who controls joint assembly and how the joint is accessed later. Do not infer a tightening value from the flange size alone. Joint assembly depends on the approved hardware, gasket and procedure. Where maintenance is important, show the removal path and temporary support arrangement on the layout instead of leaving these decisions to the shutdown crew.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"section-8\">\u0420\u0430\u0437\u043c\u0435\u0440\u044b \u0444\u043b\u0430\u043d\u0446\u0435\u0432: \u043f\u0440\u0435\u0432\u0440\u0430\u0442\u0438\u0442\u0435 \u043e\u0431\u0437\u043e\u0440 \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u0432 \u0432 \u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0435<\/h2>\n\n\n<p class=\"wp-block-paragraph\">The purpose of the measurement record is to decide whether the component can proceed to the next operation. For flange sizes, identify any open feature and assign responsibility for resolving it. Accepted dimensions, pending information and rejected conditions should remain distinguishable. A signed sheet with blank critical fields is not a complete release. If an authorized modification is needed, record its scope and the requirement for reinspection. Retain the final drawing and measurement result with the item identity so the installation team receives the same technical basis used by the purchasing and inspection teams.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"project-review\">\u041d\u0430\u043d\u0435\u0441\u0438\u0442\u0435 \u043e\u0442\u0437\u044b\u0432 \u043d\u0430 \u0444\u043b\u0430\u043d\u0435\u0446 \u0434\u043b\u044f \u0441\u0432\u0430\u0440\u043d\u043e\u0433\u043e \u0448\u0432\u0430<\/h2>\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/www.seggdsb.com\/ru\/product\/socket-weld-flange\/\">\u0413\u043d\u0435\u0437\u0434\u043e \u0421\u0432\u0430\u0440\u043d\u043e\u0439 \u0424\u043b\u0430\u043d\u0435\u0446<\/a> page provides a relevant starting point in Sirgou&#8217;s product range. Use it to identify the product family, then request the exact drawing and data for the proposed order. For flange sizes, the key decision is this: Measure the socket and the mating flange separately. A correct bolt pattern can conceal an incompatible socket or pipe outside diameter, especially when a maintenance store mixes metric and inch stock.<\/p>\n\n\n<p class=\"wp-block-paragraph\">Consider a review exercise in which the purchase team receives an offer for socket weld flange while one interface detail is still unconfirmed. The commercial description appears to match, but the reviewer cannot yet verify mating face, bore, drilling, material grade and rating basis. The next step is to place the open detail on the enquiry record, ask for a written response and compare that response with the design. This is an illustrative workflow, not a reported customer installation or a claim that a particular component has passed inspection.<\/p>\n\n\n<p class=\"wp-block-paragraph\">For flange sizes, keep three decisions separate in that exercise: whether the proposed product meets the technical requirement, whether the quoted package includes the required evidence, and whether its delivery fits the installation sequence. A positive answer to one question does not answer the other two. If a drawing changes, update the affected item and companion components before release. The accepted record should identify the selected flange assembly, the remaining conditions of supply and the person or role responsible for closing each outstanding point.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"comparison\">\u0420\u0430\u0437\u043c\u0435\u0440\u044b \u0444\u043b\u0430\u043d\u0446\u0435\u0432: \u0441\u0440\u0430\u0432\u043d\u0438\u0442\u0435 \u0434\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u0430<\/h2>\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u041f\u0443\u043d\u043a\u0442 \u043e\u0431\u0437\u043e\u0440\u0430<\/th><th>\u041d\u0435\u043f\u043e\u043b\u043d\u0430\u044f \u043e\u0441\u043d\u043e\u0432\u0430<\/th><th>\u041f\u043e\u043b\u0435\u0437\u043d\u0430\u044f \u0437\u0430\u043a\u0443\u043f\u043e\u0447\u043d\u0430\u044f \u043e\u0441\u043d\u043e\u0432\u0430<\/th><\/tr><\/thead><tbody><tr><td>\u0418\u0434\u0435\u043d\u0442\u0438\u0447\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430<\/td><td>\u0420\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f \u0438\u043b\u0438 \u0444\u043e\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u044f<\/td><td>Socket Weld Flange with the specified product range and item reference<\/td><\/tr><tr><td>\u041a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u044b<\/td><td>\u0422\u043e\u043b\u044c\u043a\u043e \u043d\u043e\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u043e\u0435 \u043e\u0431\u043e\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435<\/td><td>\u0421\u043e\u043f\u0440\u044f\u0433\u0430\u0435\u043c\u0430\u044f \u043f\u043e\u0432\u0435\u0440\u0445\u043d\u043e\u0441\u0442\u044c, \u0441\u0442\u0432\u043e\u043b, \u0431\u0443\u0440\u0435\u043d\u0438\u0435, \u0441\u043e\u0440\u0442\u043d\u043e\u0441\u0442\u044c \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u0430 \u0438 \u0440\u0435\u0439\u0442\u0438\u043d\u0433\u043e\u0432\u0430\u044f \u043e\u0441\u043d\u043e\u0432\u0430<\/td><\/tr><tr><td>\u041f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435<\/td><td>\u041f\u0440\u0435\u0434\u043f\u043e\u043b\u0430\u0433\u0430\u0435\u043c\u0430\u044f \u043f\u0440\u0438\u0433\u043e\u0434\u043d\u043e\u0441\u0442\u044c \u0434\u043b\u044f \u043b\u044e\u0431\u043e\u0433\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f<\/td><td>A Field Measurement Sheet for Small-Bore Connections with the actual service and layout defined<\/td><\/tr><tr><td>\u041f\u0440\u0438\u043d\u044f\u0442\u0438\u0435<\/td><td>\u041e\u0431\u0449\u0435\u0435 \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u0435, \u0447\u0442\u043e \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u043e - \u044d\u0442\u043e \u0445\u043e\u0440\u043e\u0448\u043e<\/td><td>\u0421\u043f\u0440\u0430\u0432\u043e\u0447\u043d\u044b\u0435 \u0447\u0435\u0440\u0442\u0435\u0436\u0438, \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u043c\u044b\u0435 \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u044b \u0438 \u0437\u0430\u0440\u0435\u0433\u0438\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438<\/td><\/tr><tr><td>\u041a\u043e\u043c\u043c\u0435\u0440\u0447\u0435\u0441\u043a\u0438\u0439 \u0440\u0430\u0437\u043c\u0430\u0445<\/td><td>\u0426\u0435\u043d\u0430 \u0437\u0430 \u0435\u0434\u0438\u043d\u0438\u0446\u0443 \u0431\u0435\u0437 \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0439<\/td><td>\u0421\u043e\u043f\u043e\u0441\u0442\u0430\u0432\u0438\u043c\u043e\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e, \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u044b, \u0443\u0441\u043b\u043e\u0432\u0438\u044f \u0443\u043f\u0430\u043a\u043e\u0432\u043a\u0438 \u0438 \u0434\u043e\u0441\u0442\u0430\u0432\u043a\u0438<\/td><\/tr><tr><td>\u0418\u0437\u043c\u0435\u043d\u0438\u0442\u044c \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c<\/td><td>\u041d\u0435\u0444\u043e\u0440\u043c\u0430\u043b\u044c\u043d\u0430\u044f \u044d\u043a\u0432\u0438\u0432\u0430\u043b\u0435\u043d\u0442\u043d\u0430\u044f \u0437\u0430\u043c\u0435\u043d\u0430<\/td><td>\u041f\u0438\u0441\u044c\u043c\u0435\u043d\u043d\u044b\u0439 \u043e\u0431\u0437\u043e\u0440 \u0440\u0430\u0437\u043d\u0438\u0446\u044b \u0438 \u0437\u0430\u0442\u0440\u043e\u043d\u0443\u0442\u044b\u0445 \u0435\u044e \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u043e\u0432<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<p class=\"wp-block-paragraph\">Use this flange sizes comparison as an enquiry checklist, not as a substitute for the approved engineering documents. The incomplete and useful columns describe different levels of information; they are not product grades or a ranking of manufacturers. Add the actual offered values and their sources beside the relevant requirement. If two offers use different technical assumptions, resolve the difference before treating their prices as comparable.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"enquiry\">\u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u044c\u0442\u0435 \u0437\u0430\u043f\u0440\u043e\u0441, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u043e\u0436\u043d\u043e \u043e\u0442\u0432\u0435\u0442\u0438\u0442\u044c<\/h2>\n\n\n<p class=\"wp-block-paragraph\">For flange sizes, send the supplier a concise package containing the intended application, the required flange assembly, the current drawing and the quantity schedule. Include mating face, bore, drilling, material grade and rating basis, together with the inspection and document requirements. State the requested delivery date and destination, and ask the supplier to identify every deviation or missing input. A focused enquiry reduces repeated clarification because the supplier can respond to the actual project rather than guessing what a short product name means.<\/p>\n\n\n<p class=\"wp-block-paragraph\">Sirgou \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u0442 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0443, \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u0443\u044e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443, \u043a\u043e\u043e\u0440\u0434\u0438\u043d\u0430\u0446\u0438\u044e \u043f\u0440\u043e\u0432\u0435\u0440\u043e\u043a \u0438 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u044d\u043a\u0441\u043f\u043e\u0440\u0442\u0430 \u043d\u0430 \u0441\u0432\u043e\u0435\u043c <a href=\"https:\/\/www.seggdsb.com\/ru\/service\/\">\u0441\u0442\u0440\u0430\u043d\u0438\u0446\u0430 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u044f \u0442\u0440\u0443\u0431\u043e\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u043e\u0433\u043e \u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u044f<\/a>. Ask which services and records apply to this particular order. Do not assume a general capability statement confirms a specific grade, certificate scope, lead time or test result. For flange sizes, obtain those commitments in the quotation and approved technical submittal so the final purchase decision has a clear basis.<\/p>\n\n\n<p class=\"wp-block-paragraph\">\u0421\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0443\u044e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u0441\u043c <a href=\"https:\/\/www.seggdsb.com\/ru\/orifice-flange\/\">\u0424\u043b\u0430\u043d\u0435\u0446 \u043e\u0442\u0432\u0435\u0440\u0441\u0442\u0438\u044f: \u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u0434\u0435\u0442\u0430\u043b\u0438 \u0438 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0430<\/a>. \u0427\u0442\u043e \u043a\u0430\u0441\u0430\u0435\u0442\u0441\u044f \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043e\u0432 \u0438 \u043e\u0431\u044a\u0435\u043c\u0430 \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0441\u0441\u044b\u043b\u043e\u043a, \u043e\u0431\u0440\u0430\u0442\u0438\u0442\u0435\u0441\u044c \u043a <a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b16-5-pipe-flanges-flanged-fittings-nps-1-2-nps-24-metric-inch-standard\/2025\/pdf\" target=\"_blank\" rel=\"noopener noreferrer\">\u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u044b \u0438\u043b\u0438 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0439<\/a>. \u0418\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u043c\u0443\u044e \u0440\u0435\u0434\u0430\u043a\u0446\u0438\u044e \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0438 \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u044b \u043f\u043e \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u043e\u043c\u0443 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0443 \u0434\u043b\u044f \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u0435\u043c\u043b\u0435\u043c\u044b\u0445 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439; \u0432 \u044d\u0442\u043e\u043c \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u0435 \u043d\u0435 \u0432\u043e\u0441\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0441\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u0435\u043d\u043d\u0430\u044f \u0440\u0430\u0437\u043c\u0435\u0440\u043d\u0430\u044f \u0438\u043b\u0438 \u0440\u0435\u0439\u0442\u0438\u043d\u0433\u043e\u0432\u0430\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u0430.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"quotation\">\u0417\u0430\u043f\u0440\u043e\u0441\u0438\u0442\u0435 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u043f\u043e \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u043e\u043c\u0443 \u043f\u0440\u043e\u0435\u043a\u0442\u0443<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Planning an order involving flange sizes? Send Sirgou your drawing, product sizes, service conditions, quantity and delivery requirements. Ask for a proposal that identifies the exact product, documents and any deviations. Use the form below to start a specification review and request a quotation based on your project.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">\u0427\u0430\u0441\u0442\u043e \u0437\u0430\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0435 \u0432\u043e\u043f\u0440\u043e\u0441\u044b<\/h2>\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list\">\n<div id=\"faq-9-0\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">\u0427\u0442\u043e \u0434\u043e\u043b\u0436\u0435\u043d \u0432\u043a\u043b\u044e\u0447\u0430\u0442\u044c \u0437\u0430\u043f\u0440\u043e\u0441 \u043d\u0430 \u0440\u0430\u0437\u043c\u0435\u0440\u044b \u0444\u043b\u0430\u043d\u0446\u0435\u0432?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>\u041e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435 \u0442\u043e\u0447\u043d\u044b\u0439 \u043f\u0440\u043e\u0434\u0443\u043a\u0442 \u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435, \u0437\u0430\u0442\u0435\u043c \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u044c\u0442\u0435 \u0441\u043e\u043f\u0440\u044f\u0433\u0430\u0435\u043c\u0443\u044e \u043f\u043e\u0432\u0435\u0440\u0445\u043d\u043e\u0441\u0442\u044c, \u043e\u0442\u0432\u0435\u0440\u0441\u0442\u0438\u0435, \u0441\u0432\u0435\u0440\u043b\u0435\u043d\u0438\u0435, \u043a\u043b\u0430\u0441\u0441 \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u0430 \u0438 \u0440\u0435\u0439\u0442\u0438\u043d\u0433. \u0434\u043e\u0431\u0430\u0432\u044c\u0442\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e, \u043e\u0431\u044a\u0435\u043c \u0434\u043e\u0441\u0442\u0430\u0432\u043a\u0438 \u0438 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0435 \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u044b. \u0414\u043b\u044f \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u0430 \u0444\u043b\u0430\u043d\u0446\u0430 \u0433\u043d\u0435\u0437\u0434\u0430 \u0441\u0432\u0430\u0440\u043d\u043e\u0433\u043e \u0448\u0432\u0430 \u0437\u0430\u043f\u0440\u043e\u0441\u0438\u0442\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u043c\u044b\u0439 \u0447\u0435\u0440\u0442\u0435\u0436, \u0430 \u043d\u0435 \u043f\u043e\u043b\u0430\u0433\u0430\u0439\u0442\u0435\u0441\u044c \u043d\u0430 \u0444\u043e\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u044e \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-9-1\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Can flange sizes be selected from the product name alone?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>No. The name identifies a search or product category, but it does not resolve every interface or service requirement. For flange sizes, verify the actual configuration against the approved drawing and the applicable product information before ordering.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-9-2\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Which documents help verify flange sizes?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Use the documents required by the project, such as the approved drawing, product data, material or batch records and relevant inspection results. Each record should identify the offered or delivered item. A general supplier certificate does not establish every property of flange sizes.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-9-3\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">How should buyers compare flange sizes quotations?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>First align the technical requirement, quantity basis and included scope. Then compare price, packing, documents and delivery terms. Keep deviations visible. A quotation for flange sizes is only comparable when it covers the same accepted requirement.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-9-4\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">What is the next step when a flange sizes detail is unclear?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Record the missing feature and ask the supplier or responsible designer for a written clarification. Do not turn an unknown into an assumed value. For this topic, focus on a Field Measurement Sheet for Small-Bore Connections and retain the final decision with the order.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class='fluentform ff-default fluentform_wrapper_3 ffs_default_wrap'><form data-form_id=\"3\" id=\"fluentform_3\" class=\"frm-fluent-form fluent_form_3 ff-el-form-top ff_form_instance_3_1 ff-form-loading ffs_default\" data-form_instance=\"ff_form_instance_3_1\" method=\"POST\" action=\"\" ><fieldset  style=\"border: none!important;margin: 0!important;padding: 0!important;background-color: transparent!important;box-shadow: none!important;outline: none!important; min-inline-size: 100%;\">\n                    <legend class=\"ff_screen_reader_title\" style=\"display: block; margin: 0!important;padding: 0!important;height: 0!important;text-indent: -999999px;width: 0!important;overflow:hidden;\">\u5b98\u8be2\u76d8<\/legend>        <div\n                style=\"display: none!important; position: absolute!important; 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type=\"text\/javascript\">\n                window.fluent_form_ff_form_instance_3_1 = {\"id\":\"3\",\"ajaxUrl\":\"https:\\\/\\\/www.seggdsb.com\\\/wp-admin\\\/admin-ajax.php\",\"settings\":{\"layout\":{\"labelPlacement\":\"top\",\"helpMessagePlacement\":\"with_label\",\"errorMessagePlacement\":\"inline\",\"cssClassName\":\"\",\"asteriskPlacement\":\"asterisk-right\"},\"restrictions\":{\"denyEmptySubmission\":{\"enabled\":false}}},\"form_instance\":\"ff_form_instance_3_1\",\"form_id_selector\":\"fluentform_3\",\"rules\":{\"input_text\":{\"required\":{\"value\":true,\"message\":\"This field is required\",\"global_message\":\"This field is required\",\"global\":true}},\"email\":{\"required\":{\"value\":true,\"message\":\"This field is required\",\"global\":false,\"global_message\":\"This field is required\"},\"email\":{\"value\":true,\"message\":\"This field must contain a valid email\",\"global\":false,\"global_message\":\"This field must contain a valid 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This guide focuses on a Field Measurement Sheet for Small-Bore Connections. Measure the socket and the mating flange separately. A correct bolt pattern can conceal an incompatible socket or pipe outside diameter, especially when a maintenance [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":175,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","rank_math_title":"Flange sizes: Dimensions and Fit Checks","rank_math_description":"Review flange sizes: a Field Measurement Sheet for Small-Bore Connections. Compare project requirements and supplier evidence before ordering.","rank_math_canonical_url":"https:\/\/www.seggdsb.com\/flange-sizes-a-field-measurement-sheet-for-small-bore-connections\/","rank_math_focus_keyword":"flange sizes"},"categories":[1],"tags":[],"class_list":["post-1776","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.seggdsb.com\/ru\/wp-json\/wp\/v2\/posts\/1776","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.seggdsb.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.seggdsb.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.seggdsb.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.seggdsb.com\/ru\/wp-json\/wp\/v2\/comments?post=1776"}],"version-history":[{"count":1,"href":"https:\/\/www.seggdsb.com\/ru\/wp-json\/wp\/v2\/posts\/1776\/revisions"}],"predecessor-version":[{"id":1777,"href":"https:\/\/www.seggdsb.com\/ru\/wp-json\/wp\/v2\/posts\/1776\/revisions\/1777"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.seggdsb.com\/ru\/wp-json\/wp\/v2\/media\/175"}],"wp:attachment":[{"href":"https:\/\/www.seggdsb.com\/ru\/wp-json\/wp\/v2\/media?parent=1776"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.seggdsb.com\/ru\/wp-json\/wp\/v2\/categories?post=1776"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.seggdsb.com\/ru\/wp-json\/wp\/v2\/tags?post=1776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}