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| 起源の場所: | 中国 |
| ブランド名: | ASME SA249 |
| 証明: | ISO 9001-2015,ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS |
| モデル番号: | ASME SA249 TP304/304L |
| 最小注文数量: | 500kgs |
|---|---|
| 価格: | 1-100000 USD |
| パッケージの詳細: | プラスチックキャップ/バンドルを備えたPly-woodenケース |
| 受渡し時間: | 量に従って |
| 支払条件: | L/C、T/T |
| 供給の能力: | 月額1000トン |
| 製品名: | ステンレス鋼の溶接された管 | 溶接管規格: | ASME SA249 |
|---|---|---|---|
| 溶接管の使用: | 圧力容器,ボイラー,超熱器,熱交換器,冷却器など | パッケージ: | 複合木製のケース / 織物袋 |
| 長さ: | 最大 34M/PC | 表面: | 明るいアニール |
| ハイライト: | ASME SA249 stainless steel welded tube,TP304/304L welded tube for shipbuilding,stainless steel boiler tube with warranty |
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1. Introduction to ASME SA249 Standard and Material Grades
The ASME SA249 standard, developed by the American Society of Mechanical Engineers (ASME), specifically covers the requirements for welded austenitic stainless steel tubes used in boilers, superheaters, heat exchangers, and condensers. This standard ensures that the tubes meet rigorous quality and performance requirements for critical high-temperature and pressure applications.
The TP304 and TP304L grades are among the most widely used austenitic stainless steels globally. While they share many characteristics, the key difference lies in their carbon content:
Dual-grade certification indicates that the material meets the chemical and mechanical properties requirements of both grades, offering enhanced flexibility for various applications.
2. ASME SA249 TP304/304L Stainless Steel Welded Tube Chemical Composition Requirements
The chemical composition of ASME SA249 TP304/304L welded tubes must conform to the following specifications:
| Element | TP304 Requirements | TP304L Requirements | Dual Certification Implications |
| Carbon (C) | ≤0.08% | ≤0.03% | Must meet the stricter ≤0.03% limit |
| Manganese (Mn) | ≤2.0% | ≤2.0% | Must meet ≤2.0% |
| Silicon (Si) | ≤1.00% | ≤1.00% | Must meet ≤1.00% |
| Phosphorus (P) | ≤0.045% | ≤0.045% | Must meet ≤0.045% |
| Sulfur (S) | ≤0.030% | ≤0.030% | Must meet ≤0.030% |
| Chromium (Cr) | 18.00-20.00% | 18.00-20.00% | Must meet 18.00-20.00% |
| Nickel (Ni) | 8.00-11.00% | 8.00-12.00% | Typically adjusted to 8.00-12.00 |
3. SA249 TP304/304L Welded Tube Mechanical Properties and Performance Characteristics
| Property | TP304 Requirements | TP304L Requirements | Notes |
| Tensile Strength | ≥515 MPa | ≥485 MPa | TP304L typically has slightly lower strength |
| Yield Strength | ≥205 MPa | ≥170 MPa | TP304L has lower yield strength |
| Elongation | ≥35% | ≥35% | Both maintain excellent ductility |
| Hardness (HRC) | <90 | <90 | Similar hardness characteristics |
4. SA249 TP304/304L Welded Tube Heat Treatment and Quality Assurance
All tubes undergo solution annealing heat treatment:
This process ensures optimal corrosion resistance and mechanical properties.
Manufacturing follows rigorous quality control procedures:
5. ASME SA249 TP304/304L welded tubes Applications:
Superheater tubes: For increasing steam temperature beyond saturation point.
Heat exchanger tubes: For various heat transfer applications in power cycles.
Petroleum refining: Transferring hydrocarbons and process fluids.
Pharmaceutical manufacturing: Maintaining product purity in sterile processes.
Nuclear power: Selected applications where corrosion resistance is crucial.
Marine applications: Heat exchangers for shipboard systems.
コンタクトパーソン: Mia Wang
電話番号: +8618457251994
ファックス: 0086-574-88017980
