説明
Factory-made butt-welding pipe fitting
ASTM A403 WP316L Butt Weld Pipe Cap to ASME B16.9
A corrosion-resistant 316L stainless steel end closure with a weld bevel for high-integrity process, 海洋, pharmaceutical and water-treatment piping.
What is an ASTM A403 WP316L butt weld pipe cap?
アン ASTM A403 WP316L pipe cap is a wrought austenitic stainless steel butt-welding fitting used to close the end of a pipe, header or branch permanently. Its contoured closed end and prepared weld bevel support a compact, leak-tight termination without a bolted joint.
WP316L combines low carbon content with molybdenum alloying. It is frequently selected where welded fabrication and localized corrosion resistance are more important than the lower initial cost of WP304L. Actual suitability must be checked against chloride level, 温度, cleaning chemicals and the project corrosion allowance.
WP316L pipe cap specifications
| 製品タイプ | Butt weld pipe cap / end cap / BW cap |
|---|---|
| 材質仕様 | ASTM A403 WP316L |
| 材質の指定 | UNS S31603; 通常、EN と相互参照されます 1.4404 / X2CrNiMo17-12-2 |
| 寸法規格 | ASME B16.9; MSS SP-43 option where applicable |
| 呼び径 | NPS 1/2–48 / DN15–DN1200, subject to material, wall and manufacturing route |
| 肉厚 | Sch 5S, 10S, 40S, 80S, 160, XXS and project-specific wall |
| 工事 | Seamless or welded as applicable and ordered |
| 終了準備 | Butt-weld bevel to the ordered piping specification |
| 表面 | Pickled/passivated, solution-annealed finish or project-specific treatment |
| ドキュメント | EN 10204 3.1 MTC, 熱価トレーサビリティ, 注文時の寸法レポートと PMI |
Dimensions and tolerances follow the ordered standard and edition. Final pressure-temperature suitability is determined by the piping design code, 材料, 壁の厚さ, matching pipe and service conditions.
ASME and European project requirements
North American projects
特定 ASTM A403 WP316L, ASME B16.9, NPS, matching pipe schedule, 工事, bevel and supplementary examination. Include the pipe specification when an exact bore or special wall is required.
欧州プロジェクト
State the required EN material designation such as 1.4404, DN size, 壁の厚さ, fitting dimensional standard, PED-related documentation if applicable and EN 10204 inspection certificate type.
WP316L vs WP304L pipe cap
| 選定のポイント | WP316L | WP304L |
|---|---|---|
| 米国の指定 | S31603 | S30403 |
| モリブデン | Typically alloyed with molybdenum | No intentional molybdenum addition |
| Relative corrosion behavior | Better localized corrosion resistance in many chloride services | Good general corrosion resistance for less aggressive service |
| 代表的な選択 | 化学薬品, 海洋, water treatment and demanding hygienic service | Clean utilities, food processing and general industrial service |
代表的な用途
| 業界 | 代表的なサービス | Selection reason |
|---|---|---|
| 化学処理 | Process headers, drains and equipment branch closures | Corrosion resistance plus welded system integrity |
| 海洋および水処理 | Seawater-adjacent and chloride-bearing utility lines | Improved pitting resistance versus 304L in many conditions |
| 医薬品 | Clean utilities and validated process support systems | Low-carbon weldability and traceable stainless construction |
| 食べ物と飲み物 | Cleaning circuits and corrosive product lines | Cleanable stainless surface and durable closure |
Application examples are guidance only. The project engineer must confirm material compatibility, 腐食代, impact requirements and design-code compliance.
製造業, 検査と文書化
The manufacturing route may include forming, 溶体化熱処理, weld processing where applicable, 較正, bevel machining, pickling/passivation and final inspection. PMI and surface-condition requirements should be stated at quotation stage.
Heat-number control and MTC review against the purchase specification.
外径, 全長, 壁の厚さ, ovality and bevel geometry checked as ordered.
PT, MT, ユタ州, 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.
見積依頼チェックリスト
- Material grade and product specification
- 寸法規格とエディション
- NPS or DN size
- Pipe schedule or exact wall thickness
- Seamless or welded construction, when required
- End preparation and bevel detail
- Quantity and delivery destination
- MTC, 臨死体験および第三者検査の要件
よくある質問
What does WP316L mean?
WP316L identifies a wrought austenitic stainless steel fitting grade under ASTM A403. UNS S31603 is the corresponding alloy designation.
する ASME B16.9 define the material?
いいえ. ASME B16.9 primarily addresses dimensions, 公差, 評価, testing and marking for factory-made wrought butt-welding fittings. ASTM A403 defines the stainless steel material requirements.
Which schedules can be supplied?
Common requirements include Sch 5S, 10S, 40S and 80S, with heavier or project-specific walls available subject to size and manufacturing route.
Is WP316L always suitable for seawater?
No material should be selected from grade name alone. 温度, 塩化物濃度, 流れ, crevices and cleaning chemistry must be reviewed; duplex or super duplex may be preferred for more severe service.
Can PMI and EN 10204 3.1 documents be supplied?
はい, when included in the purchase order. Heat-number traceability, EN 10204 3.1 認証, PMI and dimensional inspection can be supplied to the agreed inspection plan.
Request a WP316L pipe cap quotation
Send the NPS or DN, スケジュール, 量, 工事, bevel and inspection requirements for a project-specific quotation.
