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| 원래 장소: | 중국 |
| 브랜드 이름: | ASME SA249 |
| 인증: | ISO 9001-2015,ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS |
| 모델 번호: | ASME SA249 TP304/304L |
| 최소 주문 수량: | 500kg |
|---|---|
| 가격: | 1-100000 USD |
| 포장 세부 사항: | 플라스틱 캡/ 번들이있는 플리-우드 케이스 |
| 배달 시간: | 양에 따르면 |
| 지불 조건: | l/c, t/t |
| 공급 능력: | 월 1000 톤 |
| 제품 이름: | 스테인레스 강 용접관 | 용접 튜브 표준: | ASME SA249 |
|---|---|---|---|
| 용접 튜브 사용: | 압력 용기, 보일러, 과열기, 열교환 기, 응축기 등 | 패키지: | 뭉치에 있는 가닥 나무로 되는 케이스/짠 가방 |
| 길이: | 최대 34M/PC | 표면: | 밝은 어닐링 |
| 강조하다: | 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.
담당자: Mia Wang
전화 번호: +8618457251994
팩스: 0086-574-88017980
