Descripción
Accesorio de tubería para soldadura a tope fabricado en fábrica
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.
¿Qué es un ASTM A234 WPB butt weld cap?
Un 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- y servicio de temperatura elevada. It is commonly paired with compatible carbon steel piping in oil and gas, fuerza, steam and industrial utilities. Low-temperature service with project impact requirements may instead call for ASTM A420 WPL6.
A234 WPB butt weld cap specifications
| Tipo de producto | Carbon steel butt weld pipe cap / BW end cap |
|---|---|
| Especificación de materiales | ASTM A234 WPB |
| Estándar dimensional | ASME B16.9 |
| Tamaño nominal | NPS 1/2–48 / DN15–DN1200, sujeto a muro y ruta de fabricación |
| Grosor de la pared | Sch 20, 30, STD, 40, 60, XS, 80, 100, 120, 140, 160, XXS and custom wall |
| Construcción | Sin costura o soldado según corresponda y ordenado |
| Preparación final | 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 | Inspección dimensional, MONTE, Utah, RT, hardness or third-party inspection as specified |
| Documentación | EN 10204 3.1 MTC, heat traceability and inspection records as ordered |
Las dimensiones y tolerancias siguen el estándar y la edición solicitados.. La idoneidad final de la presión y la temperatura está determinada por el código de diseño de tuberías., material, espesor de pared, condiciones adecuadas de tubería y servicio.
ASME y requisitos de proyectos europeos.
proyectos norteamericanos
Especificar ASTM A234 WPB, ASME B16.9, NPS, cronograma, construcción, preparación final, surface protection and supplementary testing. State any sour-service or project chemistry restrictions separately.
proyectos europeos
For EN-based projects, specify the required EN steel grade and product standard rather than assuming direct equivalence with WPB. Include DN, muro, fitting dimensions, coating and EN 10204 tipo de certificado.
A234 WPB vs A420 WPL6 pipe cap
| Punto de selección | ASTM A234 WPB | ASTM A420 WPL6 |
|---|---|---|
| Primary service family | Moderado- and elevated-temperature carbon steel piping | Low-temperature carbon steel piping |
| Impact requirements | As required by design code and project specification | Low-temperature impact testing is a defining procurement consideration |
| Typical use | Aceite, gas, vapor, power and utilities | Cold-climate, refrigerated and low-temperature process systems |
| Selection rule | Use when the design specification calls for A234 WPB | Use only with the ordered WPL6 heat treatment and impact criteria |
Aplicaciones típicas
| Industria | Servicio tipico | Razón de selección |
|---|---|---|
| Petróleo y gas | Process headers, gathering lines and equipment branches | Common carbon steel fitting grade and broad availability |
| Generación de energía | Vapor, condensate and plant utility terminations | Robust butt-welded construction |
| Petroquímico | Hydrocarbon and general process piping | Schedule range and project inspection options |
| Servicios industriales | Agua, compressed air and non-corrosive services | Economical permanent closure |
Los ejemplos de aplicación son sólo orientativos. El ingeniero del proyecto debe confirmar la compatibilidad del material., tolerancia a la corrosión, Requisitos de impacto y cumplimiento del código de diseño..
Fabricación, inspección y documentación
Manufacturing may include cutting, formando, heat treatment as required, calibración, bevel machining, surface preparation and inspection. The purchase order should state construction, pruebas complementarias, impact requirements if any and coating system.
Heat-number control and MTC review against the purchase specification.
Diámetro externo, longitud total, espesor de pared, ovality and bevel geometry checked as ordered.
PT, MONTE, Utah, 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.
Lista de verificación de solicitudes de presupuesto
- Grado del material y especificación del producto.
- Estándar dimensional y edición.
- Tamaño NPS o DN
- Horario de tubería o espesor de pared exacto
- Construcción sin costuras o soldada, cuando hace falta
- Preparación de extremos y detalle de bisel.
- Cantidad y destino de entrega
- MTC, Requisitos de inspección de NDE y de terceros
Preguntas frecuentes
What does 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, exact wall, 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?
Sí. MONTE, Utah, 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, cronograma, cantidad, surface protection and inspection requirements for a fast technical and commercial offer.
