ASTM A358 TP304L Class1 Stainless Steel Welded Pipe

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%.
 

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

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

GNEE provides long-life, low-maintenance solutions for your critical projects.
Consult now to get a customized quote and material certification documents, and let ASTM A358 electric fusion welded pipe become a reliable guarantee for your project!

China ASTM A358 Welded Pipe Manufacturer

Customer visit

Testing of electric fusion welded pipes

Q1:What product information must I provide before making a purchase?
Please provide the Grade, Outside Diameter, Thickness, and surfacetreatment requirements, as well as the quantities you require.

Q2:What shipping ports are there?
We normally ship from Shanghai and Ningbo ports.

Q3:What are your payment terms?
30% T/T in advance and 70% balance before shipment or based on BL copy or LC at sight.