{"id":1617,"date":"2026-08-07T09:00:00","date_gmt":"2026-08-07T09:00:00","guid":{"rendered":"https:\/\/www.seggdsb.com\/?p=1617"},"modified":"2026-08-12T03:15:51","modified_gmt":"2026-08-12T03:15:51","slug":"threaded-flange-selection","status":"publish","type":"post","link":"https:\/\/www.seggdsb.com\/tr\/threaded-flange-selection\/","title":{"rendered":"Di\u015fli Flan\u015f: Kullan\u0131m Alanlar\u0131, Faydalar\u0131 ve S\u0131n\u0131rlamalar\u0131"},"content":{"rendered":"<p class=\"wp-block-paragraph\">A threaded flange is most useful on approved small-bore services where welding is undesirable or hot work is restricted. It is not a universal weld-free substitute: thread compatibility, wall loss, vibration, temperature cycling, corrosion, sealant, and leakage consequence can all disqualify the joint. The piping code and owner specification remain the final selection basis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu k\u0131lavuz kapsam\u0131 a\u00e7\u0131k tutar <a href=\"https:\/\/www.seggdsb.com\/tr\/product\/threaded-flange\/\">Di\u015fli Flan\u015f<\/a> ve ba\u015fl\u0131\u011f\u0131n vaat etti\u011fi karar. Ge\u00e7erli kodun, proje spesifikasyonunun, \u00fcretici talimatlar\u0131n\u0131n veya ger\u00e7ek hizmetin m\u00fchendislik incelemesinin yerini almaz.<\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>\u0130\u00e7indekiler Tablosu<\/h2><nav><ul><li><a href=\"#separate-convenience-from-suitability\">Separate convenience from suitability<\/a><\/li><li><a href=\"#specify-the-thread-system-completely\">Specify the thread system completely<\/a><\/li><li><a href=\"#review-service-restrictions\">Review service restrictions<\/a><\/li><li><a href=\"#control-thread-preparation\">Control thread preparation<\/a><\/li><li><a href=\"#select-sealant-for-the-real-fluid\">Select sealant for the real fluid<\/a><\/li><li><a href=\"#avoid-using-torque-as-the-only-criterion\">Avoid using torque as the only criterion<\/a><\/li><li><a href=\"#support-the-connected-piping\">Support the connected piping<\/a><\/li><li><a href=\"#inspect-and-test-the-completed-joint\">Inspect and test the completed joint<\/a><\/li><li><a href=\"#standards-and-source-documents\">Standartlar ve Kaynak Belgeler<\/a><\/li><li><a href=\"#related-sirgou-resources\">\u0130lgili Sirgou Kaynaklar\u0131<\/a><\/li><li><a href=\"#frequently-asked-questions\">S\u0131k\u00e7a Sorulan Sorular<\/a><\/li><li><a href=\"#project-takeaway\">Proje Paket Servisi<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"short-answer\">K\u0131sa Cevap<\/h2>\n\n<p class=\"wp-block-paragraph\">A threaded flange is most useful on approved small-bore services where welding is undesirable or hot work is restricted. It is not a universal weld-free substitute: thread compatibility, wall loss, vibration, temperature cycling, corrosion, sealant, and leakage consequence can all disqualify the joint. The piping code and owner specification remain the final selection basis.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"separate-convenience-from-suitability\">Separate convenience from suitability<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A threaded flange avoids a flange-to-pipe weld, which can help where hot work is restricted. That advantage does not remove pressure, temperature, fatigue, corrosion, or leakage considerations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The piping design basis must approve the connection type. Review separate convenience from suitability across normal operation, testing, startup, shutdown, and maintenance where those states are relevant. The threaded flange decision should remain suitable when temperature, load, flow, access, or support conditions change from the installation state.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"specify-the-thread-system-completely\">Specify the thread system completely<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nominal size is not enough because form, taper, pitch, engagement, and gauging control assembly. Pipe and flange threads must use the same recognized system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do not mix components that appear to engage but were made to different thread standards. If specify the thread system completely produces a deviation, describe the exact Threaded Flange condition and affected quantity before proposing repair or use-as-is. Technical approval should address the consequence identified by \u201cpipe and flange threads must use the same recognized system\u201d, not only the commercial or schedule effect.<\/p>\n\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\/Threaded-Flange-1.jpg\" alt=\"threaded flange: specify the thread system completely\" class=\"wp-image-176\" srcset=\"https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/Threaded-Flange-1.jpg 800w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/Threaded-Flange-1-300x300.jpg 300w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/Threaded-Flange-1-150x150.jpg 150w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/Threaded-Flange-1-768x768.jpg 768w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/Threaded-Flange-1-600x600.jpg 600w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/Threaded-Flange-1-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"review-service-restrictions\">Review service restrictions<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cyclic vibration, severe temperature changes, crevice corrosion, erosion, and hazardous leakage consequences can make threaded joints unsuitable. The governing piping code and owner specification may impose additional limits.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Document the selection instead of treating threading as a default. Inspection evidence for review service restrictions should be traceable to the affected Threaded Flange. Link photographs, reports, gauges, certificates, or drawings to the item or location so that another reviewer can verify why \u201cdocument the selection instead of treating threading as a default\u201d was considered satisfied.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"control-thread-preparation\">Control thread preparation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Threads should be clean, undamaged, correctly gauged, and free from excessive truncation or tearing. Cutting reduces the effective pipe wall at the connection.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Reject field rework that lacks an approved method and inspection. Close control thread preparation with an explicit status: accepted, rejected, conditionally released, or awaiting information. The final threaded flange file should show approved changes and open actions, preventing an unresolved point about \u201cthreads should be clean, undamaged, correctly gauged, and free from excessive truncation or tearing\u201d from reaching construction or operation.<\/p>\n\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-17.jpg\" alt=\"threaded flange: control thread preparation\" class=\"wp-image-460\" srcset=\"https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-17.jpg 800w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-17-300x206.jpg 300w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-17-768x528.jpg 768w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-17-600x413.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"select-sealant-for-the-real-fluid\">Select sealant for the real fluid<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sealant or tape must be compatible with the medium, temperature, cleanliness requirements, and future disassembly. Excess material can enter the system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sealant cannot correct wrong threads or poor engagement. For threaded flange, the purpose of this step is to turn \u201csealant or tape must be compatible with the medium, temperature, cleanliness requirements, and future disassembly\u201d into a check that can be accepted or rejected. Complete it before Threaded Flange moves beyond select sealant for the real fluid, and identify the document or measurement that supports the result.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"avoid-using-torque-as-the-only-criterion\">Avoid using torque as the only criterion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Assembly position, engagement, orientation, and leak-tightness matter together. Overtightening can damage threads or distort small components.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Follow the approved assembly procedure rather than improvising leverage. The practical risk at avoid using torque as the only criterion is an interface that appears acceptable by itself but fails when assembled. Relate the Threaded Flange finding to the mating pipe, fitting, structure, instrument, coating, or building element affected by \u201covertightening can damage threads or distort small components\u201d.<\/p>\n\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-28.jpg\" alt=\"threaded flange: avoid using torque as the only criterion\" class=\"wp-image-630\" srcset=\"https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-28.jpg 800w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-28-300x206.jpg 300w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-28-768x528.jpg 768w, https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-28-600x413.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"support-the-connected-piping\">Support the connected piping<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A threaded flange should not carry avoidable bending from misalignment, unsupported valves, or thermal movement. Arrange supports so assembly loads do not become operating loads.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Check flange face alignment independently from thread tightness. Timing matters here. Evidence for support the connected piping is strongest while the relevant marking, surface, dimension, or connection is visible. For threaded flange, record the item reference, observed condition, and disposition before later work conceals the feature described by \u201ccheck flange face alignment independently from thread tightness\u201d.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"inspect-and-test-the-completed-joint\">Inspect and test the completed joint<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Verify marking, material, thread condition, engagement, face condition, gasket, bolting, and required leak test. Record any seal weld only when the design permits it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Never assume a seal weld upgrades an unsuitable threaded design. Keep design and workmanship decisions separate during inspect and test the completed joint. The approved drawing, data sheet, code, or procedure defines the required Threaded Flange condition; inspection establishes whether the supplied condition meets it. A familiar shop practice cannot replace that comparison.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"550\" src=\"https:\/\/www.seggdsb.com\/wp-content\/uploads\/2026\/05\/tu-31.jpg\" alt=\"threaded flange: inspect and test the completed joint\" 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\n<h2 class=\"wp-block-heading\" id=\"standards-and-source-documents\">Standartlar ve Kaynak Belgeler<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">S\u00f6zle\u015fmenin adland\u0131rd\u0131\u011f\u0131 s\u00fcr\u00fcm\u00fc kullan\u0131n Birincil referans ba\u015flang\u0131\u00e7 noktalar\u0131 \u015funlar\u0131 i\u00e7erir <a href=\"https:\/\/www.asme.org\/codes-standards\/about-standards\/technology-highlights\/product-standardization-and-specifications\" target=\"_blank\" rel=\"noopener\">ASME B16 standartlar\u0131na genel bak\u0131\u015f<\/a>, <a href=\"https:\/\/www.asme.org\/learning-development\/find-course\/asme-pcc-1-level-1-bolting-assembler-fundamentals-%281%29\" target=\"_blank\" rel=\"noopener\">ASME c\u0131vatal\u0131 flan\u015f e\u011fitim tasla\u011f\u0131<\/a>, <a href=\"https:\/\/www.astm.org\/products-services\/standards-and-publications\/standards.html\" target=\"_blank\" rel=\"noopener\">ASTM standartlar\u0131 k\u00fct\u00fcphanesi<\/a>, <a href=\"https:\/\/www.iso.org\/standards.html\" target=\"_blank\" rel=\"noopener\">ISO standartlar\u0131 katalo\u011fu<\/a>. Kapsamlar\u0131 farkl\u0131l\u0131k g\u00f6sterdi\u011finden genel bir referans, her \u00fcr\u00fcn veya proje i\u00e7in kabul kriteri olarak de\u011ferlendirilmemelidir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"related-sirgou-resources\">\u0130lgili Sirgou Kaynaklar\u0131<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kar\u015f\u0131la\u015ft\u0131r\u0131n <a href=\"https:\/\/www.seggdsb.com\/tr\/product\/threaded-flange\/\">Di\u015fli Flan\u015f \u00fcr\u00fcn sayfas\u0131<\/a> ile <a href=\"https:\/\/www.seggdsb.com\/tr\/product\/socket-weld-flange\/\">Soket Kaynak Flan\u015f\u0131<\/a> ve <a href=\"https:\/\/www.seggdsb.com\/tr\/product\/blind-flange\/\">K\u00f6r Flan\u015f<\/a>. Tedarik\u00e7i yeterlilik ba\u011flam\u0131 i\u00e7in \u015funu okuyun <a href=\"https:\/\/www.seggdsb.com\/tr\/choose-steel-pipe-fittings-supplier\/\">boru ve ba\u011flant\u0131 par\u00e7alar\u0131 tedarik\u00e7i k\u0131lavuzu<\/a>. Bu sayfalar \u00fcr\u00fcn ara\u015ft\u0131rmalar\u0131n\u0131 destekler; biti\u015fik \u00fcr\u00fcnleri birbirinin yerine kullan\u0131labilir hale getirmezler.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"frequently-asked-questions\">S\u0131k\u00e7a Sorulan Sorular<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"what-should-be-confirmed-first-threaded-flange\">What should be confirmed first? \u2014 threaded flange<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A threaded flange avoids a flange-to-pipe weld, which can help where hot work is restricted. The piping design basis must approve the connection type. If the project document is more specific, its requirement controls.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"which-interface-causes-the-most-mistakes-threaded-flange\">Which interface causes the most mistakes? \u2014 threaded flange<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Cyclic vibration, severe temperature changes, crevice corrosion, erosion, and hazardous leakage consequences can make threaded joints unsuitable. Document the selection instead of treating threading as a default. If the project document is more specific, its requirement controls.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"when-should-the-check-be-recorded-threaded-flange\">When should the check be recorded? \u2014 threaded flange<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Assembly position, engagement, orientation, and leak-tightness matter together. Follow the approved assembly procedure rather than improvising leverage. If the project document is more specific, its requirement controls.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"what-belongs-in-the-final-acceptance-file-threaded-flange\">What belongs in the final acceptance file? \u2014 threaded flange<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Verify marking, material, thread condition, engagement, face condition, gasket, bolting, and required leak test. Never assume a seal weld upgrades an unsuitable threaded design. If the project document is more specific, its requirement controls.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before closing select sealant for the real fluid, connect the requirement \u201cSealant or tape must be compatible with the medium, temperature, cleanliness requirements, and future disassembly\u201d with the action \u201cSealant cannot correct wrong threads or poor engagement\u201d. In this threaded flange review, that connection identifies what was checked, why it matters to Threaded Flange, and which project record carries the final answer.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"project-takeaway\">Proje Paket Servisi<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A threaded flange is most useful on approved small-bore services where welding is undesirable or hot work is restricted. Use the article as a decision guide, then put the selected values, acceptance evidence, and approved deviations into the controlled project documents. For product-specific questions, <a href=\"https:\/\/www.seggdsb.com\/tr\/contact-us\/\">i\u0307leti\u015fim Sirgou<\/a> hizmet ko\u015fullar\u0131, boyut aral\u0131\u011f\u0131, miktarlar, standartlar ve gerekli belgelerle birlikte.<\/p>","protected":false},"excerpt":{"rendered":"<p>Learn when a threaded flange is appropriate, how threads and sealant should be specified, and when vibration, cycling, or leak risk rules it out.<\/p>","protected":false},"author":1,"featured_media":176,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[107,51,109],"class_list":["post-1617","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-flange-guide","tag-industrial-piping","tag-threaded-flange"],"_links":{"self":[{"href":"https:\/\/www.seggdsb.com\/tr\/wp-json\/wp\/v2\/posts\/1617","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.seggdsb.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.seggdsb.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.seggdsb.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.seggdsb.com\/tr\/wp-json\/wp\/v2\/comments?post=1617"}],"version-history":[{"count":4,"href":"https:\/\/www.seggdsb.com\/tr\/wp-json\/wp\/v2\/posts\/1617\/revisions"}],"predecessor-version":[{"id":1732,"href":"https:\/\/www.seggdsb.com\/tr\/wp-json\/wp\/v2\/posts\/1617\/revisions\/1732"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.seggdsb.com\/tr\/wp-json\/wp\/v2\/media\/176"}],"wp:attachment":[{"href":"https:\/\/www.seggdsb.com\/tr\/wp-json\/wp\/v2\/media?parent=1617"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.seggdsb.com\/tr\/wp-json\/wp\/v2\/categories?post=1617"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.seggdsb.com\/tr\/wp-json\/wp\/v2\/tags?post=1617"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}