ASTM A358 TP304L Class1 Stainless Steel Welded Pipe
Technique：Cold Rolled
Material：Stainless Steel
Section Shape
Welding：ERW, Efw
Surface：Mechanically Polished
Od：6.0-200mm<
Thickness：0.3-20 mm
Length：6000mm or as Customzied
ASTM A358 TP304L Class1 Stainless Steel welded pipe introduction
ASTM A358 TP304L Class 1 stainless steel electric fusion welded pipe adopts fully automatic double-torch electric fusion welding process and low-carbon welding wire, combined with 100% radiographic flaw detection and 1.5 times water pressure test to ensure that the weld quality and sealing meet nuclear grade standards; it can pass rigorous tests without additional treatment, and its pitting corrosion resistance is 15% higher than that of ordinary 304; it has a wide temperature range adaptability from -196℃ to 700℃, and its high-temperature creep strength is 15% higher than that of conventional 304L, and its low-temperature elongation is ≥40%.
ASTM A358 TP304L welded pipe
application of ASTM A358 TP304L stainless steel EFW pipe
1.Nuclear island auxiliary pipeline: In a 300-500℃ high-pressure water vapor environment, the low-carbon design avoids intergranular corrosion of welds, and Class 1 flaw detection meets ASME nuclear grade certification to ensure nuclear power safety.
LNG cryogenic pipeline
2. Food and medicine
Sterile purified water/liquid pipeline
Pharmaceutical reactor connection pipe
A358 stainless steel EFW pipe price
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ASTM A358 TP304L Low carbon ss electric fusion welded pipe specification
| Parameter | ASTM A358 TP304L Class 1 Specification |
|---|---|
| Standard | ASTM A358 / ASME SA358 (2023 Edition) |
| Grade | TP304L (UNS S30403) |
| Class | Class 1 (100% Radiographic Testing) |
| Manufacturing Process | Electric Fusion Welding (EFW) with double-sided welding and ER308L low-carbon filler metal |
| Chemical Composition | - Carbon (C): ≤0.03% - Chromium (Cr): 18.0–20.0% - Nickel (Ni): 8.0–13.0% - Manganese (Mn): ≤2.0% - Silicon (Si): ≤1.0% - Phosphorus (P): ≤0.045% - Sulfur (S): ≤0.030% - Nitrogen (N): ≤0.10% Key Feature: Low-carbon design (≤0.03%) prevents sensitization 2. |
| Mechanical Properties | - Tensile Strength: ≥515 MPa (75 ksi) - Yield Strength (0.2% Offset): ≥205 MPa (30 ksi) - Elongation: ≥40% - Hardness: ≤201 HB or ≤92 HRB High-Temperature Performance: 700°C (1292°F) continuous service, 850°C (1562°F) short-term exposure |
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