説明
Factory-made butt-welding pipe fitting
ASTM A815 S32205 Duplex 2205 パイプエンドキャップ
A high-strength duplex stainless steel butt-weld closure for offshore, 脱塩, 化学薬品, marine and pulp-and-paper piping.
What is an ASTM A815 S32205 Duplex 2205 pipe cap?
アン ASTM A815 S32205 pipe end cap is a wrought duplex stainless steel butt-welding fitting used to terminate a pipe or header. Its ferritic-austenitic microstructure gives Duplex 2205 a combination of strength and corrosion resistance that can outperform conventional austenitic stainless steels in suitable chloride-bearing services.
Correct solution heat treatment and controlled fabrication are essential to the intended duplex phase balance and corrosion performance. Purchase specifications should define the exact ASTM A815 grade designation, UNS番号, 熱処理, testing and any project-specific ferrite or corrosion-test acceptance criteria.
S32205 Duplex 2205 cap specifications
| 製品タイプ | Duplex stainless steel butt weld pipe end cap |
|---|---|
| 材質仕様 | ASTM A815, ordered grade designation with UNS S32205 |
| 材質の指定 | UNS S32205 / 二重 2205; 通常、EN と相互参照されます 1.4462 |
| 寸法規格 | ASME B16.9 |
| 呼び径 | NPS 1/2–48 / DN15–DN1200, subject to wall and manufacturing route |
| 肉厚 | Standard schedules and custom walls subject to forming and heat-treatment review |
| 工事 | Seamless or welded as applicable and ordered |
| 熱処理 | Solution heat treated in accordance with the ordered material specification |
| 終了準備 | Butt-weld bevel to the matching pipe and welding specification |
| ドキュメント | EN 10204 3.1 MTC, PMI, heat-treatment record and additional testing 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 A815 with the complete grade designation and UNS S32205, ASME B16.9, NPS, 壁のスケジュール, 工事, supplementary tests and required solution heat-treatment records.
欧州プロジェクト
Specify EN 1.4462 where required, together with DN, 壁の厚さ, 寸法規格, inspection certificate, regulatory requirements and any corrosion or ferrite testing.
二重 2205 vs 316L pipe end cap
| 選定のポイント | S32205 Duplex 2205 | WP316L / S31603 |
|---|---|---|
| Structure | Duplex ferritic-austenitic | オーステナイト系 |
| 強さ | Higher typical yield strength | Lower typical yield strength but broad fabrication familiarity |
| Chloride behavior | Improved SCC and localized corrosion resistance in many services | Good general resistance; limitations increase with severe chloride exposure |
| 製造管理 | Tighter heat-input and phase-balance control | Established austenitic stainless welding practice |
代表的な用途
| 業界 | 代表的なサービス | Selection reason |
|---|---|---|
| 海洋石油とガス | Produced water, utilities and process headers | Strength and chloride resistance |
| 脱塩 | Pretreatment, brackish water and selected seawater systems | Resistance to localized corrosion when correctly specified |
| 化学処理 | Chloride-bearing and corrosive process lines | Balanced strength and corrosion performance |
| パルプと紙 | Bleaching and chemical-recovery support systems | Useful resistance in selected chloride and chemical environments |
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
Duplex fittings require disciplined forming, welding where applicable and solution heat treatment. PMI, heat-treatment records, ferrite testing and corrosion testing can be incorporated into the inspection plan when the project specification requires them.
PMI and heat-number traceability confirm the ordered UNS designation.
Solution heat-treatment cycle and records reviewed against ASTM A815 要件.
Ferrite, 硬度, corrosion or NDE testing performed when specified.
サイズ, 壁, 長さ, ovality and bevel verified before export packing.
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
Is S32205 the same as Duplex 2205?
UNS S32205 is a widely specified Duplex 2205 composition with defined chemistry controls. The full ordered material standard and grade designation remain authoritative.
Why choose Duplex 2205 instead of 316L?
二重 2205 offers higher strength and improved resistance to chloride stress-corrosion cracking and localized corrosion in many services, but it also needs tighter welding and heat-treatment control.
Is a ferrite test required?
It is not automatically required for every order in the same way. If the project has a ferrite acceptance range or test method, include it in the purchase specification.
Can S32205 caps be welded to duplex pipe?
はい, when the pipe, フィラーメタル, 溶接手順, heat input and interpass temperature are properly specified and qualified by the fabricator.
What should be included in the RFQ?
Include ASTM A815 学年, UNS S32205, ASME B16.9, サイズ, 壁, 工事, 熱処理, 臨死体験, ferrite or corrosion tests and certification requirements.
Request a Duplex 2205 pipe cap quotation
Share the full grade designation, サイズ, 壁, quantity and duplex inspection plan for a technically matched offer.
