Yuhong Group Co.,Ltd
| Payment Terms | L/C, T/T |
| Supply Ability | 1000 tons/month |
| Delivery Time | According to the quantity |
| Packaging Details | Ply-wooden Case with plastic Cap/ bundle |
| Product Name | Stainless Steel Welded Tube |
| Welded Tubes Standard | ASME SA249 |
| Welded Tubes Use | Pressure Vessel, Boiler, Superheater, Heat Exchanger, Condenser, etc. |
| Package | Ply-wooden Case / Woven Bag in Bundle |
| Length | Max 34M/PC |
| Surface | Bright Annealed |
| Brand Name | ASME SA249 |
| Model Number | ASME SA249 TP304/304L |
| Certification | ISO 9001-2015,ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 1000 tons/month |
| Delivery Time | According to the quantity | Packaging Details | Ply-wooden Case with plastic Cap/ bundle |
| Product Name | Stainless Steel Welded Tube | Welded Tubes Standard | ASME SA249 |
| Welded Tubes Use | Pressure Vessel, Boiler, Superheater, Heat Exchanger, Condenser, etc. | Package | Ply-wooden Case / Woven Bag in Bundle |
| Length | Max 34M/PC | Surface | Bright Annealed |
| Brand Name | ASME SA249 | Model Number | ASME SA249 TP304/304L |
| Certification | ISO 9001-2015,ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS | Place of Origin | CHINA |
| High Light | ASME SA249 stainless steel welded tube ，TP304/304L welded tube for shipbuilding ，stainless steel boiler tube with warranty | ||
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.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9... YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
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