Keterangan
Fitting pipa las butt buatan pabrik
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.
Apa itu ASTM A234 WPB butt weld cap?
Sebuah 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- dan layanan suhu tinggi. It is commonly paired with compatible carbon steel piping in oil and gas, kekuatan, steam and industrial utilities. Low-temperature service with project impact requirements may instead call for ASTM A420 WPL6.
A234 WPB butt weld cap specifications
| Jenis produk | Carbon steel butt weld pipe cap / BW end cap |
|---|---|
| Spesifikasi bahan | ASTM A234 WPB |
| Standar dimensi | ASME B16.9 |
| Ukuran nominalnya | NPS 1/2–48 / DN15–DN1200, tergantung pada dinding dan rute produksi |
| Ketebalan dinding | Sch 20, 30, STD, 40, 60, XS, 80, 100, 120, 140, 160, XXS and custom wall |
| Konstruksi | Mulus atau dilas sebagaimana berlaku dan dipesan |
| Akhiri persiapan | 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 | Inspeksi dimensi, MT, UT, RT, hardness or third-party inspection as specified |
| Dokumentasi | EN 10204 3.1 MTC, heat traceability and inspection records as ordered |
Dimensi dan toleransi mengikuti standar dan edisi yang dipesan. Kesesuaian tekanan-suhu akhir ditentukan oleh kode desain perpipaan, bahan, ketebalan dinding, kesesuaian pipa dan kondisi servis.
Persyaratan proyek ASME dan Eropa
Proyek Amerika Utara
Menentukan ASTM A234 WPB, ASME B16.9, NPC, jadwal, konstruksi, persiapan akhir, surface protection and supplementary testing. State any sour-service or project chemistry restrictions separately.
proyek-proyek Eropa
For EN-based projects, specify the required EN steel grade and product standard rather than assuming direct equivalence with WPB. Include DN, dinding, fitting dimensions, coating and EN 10204 jenis sertifikat.
A234 WPB vs A420 WPL6 pipe cap
| Titik seleksi | ASTM A234 WPB | ASTM A420 WPL6 |
|---|---|---|
| Primary service family | Sedang- 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 | Minyak, gas, uap, power and utilities | Cold-climate, refrigerated and low-temperature process systems |
| Aturan seleksi | Use when the design specification calls for A234 WPB | Use only with the ordered WPL6 heat treatment and impact criteria |
Aplikasi yang umum
| Industri | Layanan khas | Alasan pemilihan |
|---|---|---|
| Minyak dan gas | Process headers, gathering lines and equipment branches | Common carbon steel fitting grade and broad availability |
| Pembangkit listrik | Uap, condensate and plant utility terminations | Robust butt-welded construction |
| Petrokimia | Hydrocarbon and general process piping | Schedule range and project inspection options |
| Utilitas industri | Air, compressed air and non-corrosive services | Economical permanent closure |
Contoh penerapan hanya sebagai panduan saja. Insinyur proyek harus memastikan kompatibilitas material, tunjangan korosi, persyaratan dampak dan kepatuhan kode desain.
Manufaktur, inspeksi dan dokumentasi
Manufacturing may include cutting, pembentukan, heat treatment as required, kalibrasi, pemesinan miring, surface preparation and inspection. The purchase order should state construction, pengujian tambahan, impact requirements if any and coating system.
Kontrol nomor panas dan tinjauan MTC terhadap spesifikasi pembelian.
Diameter luar, panjang keseluruhan, ketebalan dinding, ovalitas dan geometri kemiringan diperiksa sesuai pesanan.
PT, MT, UT, RT, kekerasan atau inspeksi pihak ketiga dapat diatur bila ditentukan.
EN 10204 3.1 sertifikat dan catatan inspeksi diberikan sesuai dengan pesanan pembelian.
Daftar periksa RFQ
- Kelas material dan spesifikasi produk
- Standar dimensi dan edisi
- Ukuran NPS atau DN
- Jadwal pipa atau ketebalan dinding yang tepat
- Konstruksi mulus atau dilas, bila diperlukan
- Persiapan akhir dan detail bevel
- Jumlah dan tujuan pengiriman
- MTC, Persyaratan inspeksi NDE dan pihak ketiga
Pertanyaan yang sering diajukan
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?
Ya. MT, UT, 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, jadwal, kuantitas, surface protection and inspection requirements for a fast technical and commercial offer.
