説明
Factory-made butt-welding pipe fitting
ASTM A420 WPL6 Low Temperature Pipe Cap
A butt-welded pipeline closure for low-temperature carbon steel systems, supplied against the ordered impact test, heat treatment and traceability requirements.
What is an ASTM A420 WPL6 low-temperature pipe cap?
アン ASTM A420 WPL6 pipe cap is a wrought low-temperature carbon steel fitting used to close the end of a butt-welded pipeline. It is selected when the design specification requires carbon steel fitting toughness at a stated low temperature rather than the general moderate-temperature service associated with ASTM A234 WPB.
WPL6 should not be treated as a generic cryogenic alloy. Allowable design temperature and suitability depend on the ordered heat treatment, impact test temperature and results, 壁の厚さ, piping code and complete service conditions. These requirements must be confirmed before manufacture.
A420 WPL6 low-temperature cap specifications
| 製品タイプ | Low-temperature carbon steel butt weld pipe cap |
|---|---|
| 材質仕様 | ASTM A420 WPL6 |
| 寸法規格 | ASME B16.9 |
| 呼び径 | NPS 1/2–48 / DN15–DN1200, subject to wall and manufacturing route |
| 肉厚 | 標準スケジュール, heavy wall, XXS and project-specific wall |
| 工事 | Seamless or welded as applicable and ordered |
| 熱処理 | に従って ASTM A420 and the ordered project requirements |
| 衝撃試験 | 試験温度, specimen requirements and acceptance criteria must be stated or confirmed from the applicable specification |
| 終了準備 | Butt-weld bevel to the matching pipe wall and welding detail |
| ドキュメント | EN 10204 3.1 MTC, heat-treatment and impact-test records, dimensional and NDE reports as ordered |
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 A420 WPL6, ASME B16.9, NPS, スケジュール, 工事, 熱処理, impact test temperature and acceptance criteria, plus any supplementary NDE or sour-service restrictions.
欧州プロジェクト
Specify the required EN low-temperature steel grade and product standard if the project is EN-based. Include DN, 壁, minimum design temperature, impact criteria, regulatory requirements and EN 10204 証明書の種類.
A420 WPL6 vs A234 WPB pipe cap
| 選定のポイント | ASTM A420 WPL6 | ASTM A234 WPB |
|---|---|---|
| Service focus | Low-temperature carbon steel piping | 適度- and elevated-temperature carbon steel piping |
| Impact toughness | Ordered low-temperature impact testing is central to material qualification | Project or code impact testing must be considered separately |
| Documentation focus | Heat treatment and impact test records | 化学, mechanical properties and general inspection records |
| 代表的な選択 | Refrigerated process, cold climate and low-temperature utilities | 油, ガス, スチーム, power and general process service |
代表的な用途
| 業界 | 代表的なサービス | Selection reason |
|---|---|---|
| Low-temperature process | Cold hydrocarbon and process utility closures | Specified impact toughness at the ordered temperature |
| Refrigeration | Industrial refrigeration auxiliaries and headers | Low-temperature carbon steel material route |
| 寒冷地施設 | Outdoor process and utility systems | Project-defined toughness and traceability |
| LPG/LNG support systems | Selected non-cryogenic auxiliaries within qualified temperature limits | Carbon steel solution where the design specification explicitly permits WPL6 |
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
WPL6 production and release require careful control of raw material, 熱処理, impact specimens, test temperature and traceability. The manufacturer must receive the complete minimum-design-temperature and acceptance requirements before confirming supply.
試験温度, specimen orientation, size and absorbed-energy criteria reviewed against the order.
Treatment route and batch traceability linked to the material certificate.
Cap geometry, 壁, bevel and specified NDE verified before release.
MTC, 結果に影響を与える, heat treatment and inspection records compiled as ordered.
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
とは何ですか ASTM A420 WPL6 used for?
It is a low-temperature carbon steel fitting grade used where the piping specification requires verified toughness at a defined low temperature.
What is the minimum service temperature of WPL6?
A single universal service limit should not be assigned without the applicable piping code, 熱処理, wall thickness and ordered impact test data. Confirm the project minimum design metal temperature and acceptance requirements.
Is WPL6 a cryogenic stainless steel?
いいえ. WPL6 is a low-temperature carbon steel fitting grade. True cryogenic services may require austenitic stainless steel or nickel alloy selected by the project engineer.
What documents prove low-temperature qualification?
The data package commonly includes the MTC, heat-treatment record and impact-test report showing specimen details, test temperature and results, plus traceability to the fitting heat or batch.
Can heavy-wall WPL6 caps be supplied?
はい, subject to a technical review of size, exact wall, 形成ルート, heat treatment and impact specimen requirements.
Request an A420 WPL6 pipe cap quotation
Include the minimum design temperature, impact test requirement, サイズ, 壁, quantity and documentation package for an accurate offer.
