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공장에서 제작한 맞대기 용접 파이프 피팅
ASTM A234 WPB Carbon Steel Butt Weld Cap
A robust, economical factory-made closure for carbon steel process piping, supplied with the wall thickness, bevel and documentation required by the project.
은 무엇입니까? ASTM A234 WPB butt weld cap?
안 ASTM A234 WPB butt weld cap is a wrought carbon steel fitting used to permanently close a pipe, manifold or header. The cap is formed to a rounded closed profile and welded directly to the matching pipe, eliminating a gasketed joint and minimizing installed envelope.
WPB is a widely used carbon steel fitting grade for moderate- 및 고온 서비스. It is commonly paired with compatible carbon steel piping in oil and gas, 힘, steam and industrial utilities. Low-temperature service with project impact requirements may instead call for ASTM A420 WPL6.
A234 WPB butt weld cap specifications
| 제품 유형 | Carbon steel butt weld pipe cap / BW end cap |
|---|---|
| 재료 사양 | ASTM A234 WPB |
| 치수표준 | ASME B16.9 |
| 공칭 크기 | NPS 1/2–48 / DN15~DN1200, 벽 및 제조 경로에 따라 다름 |
| 벽 두께 | Sch 20, 30, STD, 40, 60, XS, 80, 100, 120, 140, 160, XXS and custom wall |
| 건설 | 적용 가능한 경우 이음새가 없거나 용접되어 주문됨 |
| 준비 종료 | Butt-weld bevel to the ordered pipe wall and welding detail |
| Surface protection | Bare, anti-rust oil, black paint or project-specific coating |
| Testing options | 치수검사, MT, 유타, RT, hardness or third-party inspection as specified |
| 선적 서류 비치 | EN 10204 3.1 MTC, heat traceability and inspection records as ordered |
치수 및 공차는 주문한 표준 및 에디션을 따릅니다.. 최종 압력-온도 적합성은 배관 설계 코드에 따라 결정됩니다., 재료, 벽 두께, 파이프 및 서비스 조건 일치.
ASME 및 유럽 프로젝트 요구 사항
북미 프로젝트
지정하다 ASTM A234 WPB, ASME B16.9, NPS, 일정, 건설, 최종 준비, surface protection and supplementary testing. State any sour-service or project chemistry restrictions separately.
유럽 프로젝트
For EN-based projects, specify the required EN steel grade and product standard rather than assuming direct equivalence with WPB. DN 포함, 벽, fitting dimensions, coating and EN 10204 인증서 유형.
A234 WPB vs A420 WPL6 pipe cap
| 선택 포인트 | ASTM A234 WPB | ASTM A420 WPL6 |
|---|---|---|
| Primary service family | 보통의- 및 고온 탄소강 배관 | 저온 탄소강 배관 |
| Impact requirements | As required by design code and project specification | Low-temperature impact testing is a defining procurement consideration |
| Typical use | 기름, 가스, 증기, power and utilities | Cold-climate, refrigerated and low-temperature process systems |
| 선택 규칙 | Use when the design specification calls for A234 WPB | Use only with the ordered WPL6 heat treatment and impact criteria |
일반적인 애플리케이션
| 산업 | 대표적인 서비스 | 선정 이유 |
|---|---|---|
| 석유 및 가스 | Process headers, gathering lines and equipment branches | Common carbon steel fitting grade and broad availability |
| 발전 | Steam, condensate and plant utility terminations | Robust butt-welded construction |
| 석유화학 | Hydrocarbon and general process piping | Schedule range and project inspection options |
| 산업용 유틸리티 | 물, compressed air and non-corrosive services | Economical permanent closure |
적용 사례는 참고용일 뿐입니다.. 프로젝트 엔지니어는 재료 호환성을 확인해야 합니다., 부식 허용량, 영향 요구사항 및 설계 코드 준수.
조작, 검사 및 문서화
Manufacturing may include cutting, 형성, heat treatment as required, 구경 측정, bevel machining, surface preparation and inspection. The purchase order should state construction, 보충 테스트, impact requirements if any and coating system.
Heat-number control and MTC review against the purchase specification.
외경, 전체 길이, 벽 두께, ovality and bevel geometry checked as ordered.
PT, MT, 유타, RT, hardness or third-party inspection can be arranged when specified.
EN 10204 3.1 certificate and inspection records supplied according to the purchase order.
RFQ 체크리스트
- 재질등급 및 제품사양
- 차원 표준 및 에디션
- NPS 또는 DN 크기
- 파이프 일정 또는 정확한 벽 두께
- 심리스 또는 용접 구조, 필요할 때
- 최종 준비 및 베벨 디테일
- 수량 및 배송지
- MTC, NDE 및 제3자 검사 요구 사항
자주 묻는 질문
무엇을 ASTM A234 WPB cover?
ASTM A234 WPB is a carbon steel fitting grade used for wrought fittings in moderate- and elevated-temperature piping applications. ASME B16.9 supplies the fitting dimensions and tolerances.
Is WPB suitable for low-temperature service?
Do not assume so from the grade name. Low-temperature piping with specified impact toughness commonly uses ASTM A420 WPL6 or another material selected by the project engineer.
Can the cap match Sch 160 or XXS pipe?
Heavy-wall caps can be supplied in many sizes, but manufacturability depends on outside diameter, 정확한 벽, construction route and quantity. Provide the pipe dimensions for review.
Which coatings are available?
Bare finish, anti-rust oil, black paint and project-specific coating systems are common options. Coating compatibility and weld-area requirements should be specified.
Can NDE be arranged?
예. MT, 유타, RT, hardness testing and third-party inspection can be arranged when the method, extent and acceptance criteria are stated in the order.
Request an A234 WPB butt weld cap quotation
Send the NPS, 일정, 수량, surface protection and inspection requirements for a fast technical and commercial offer.
