ASTM A358 CL1 TP316L Stainless Steel Welded Pipe For High Temperature Service

Oct 27, 2025

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ASTM A358: "ASTM" stands for the American Society for Testing and Materials, which sets standards for a wide range of materials and products. A358 specifically addresses electric fusion welded (EFW) stainless steel pipe for corrosive or high-temperature applications.


ASTM A358 CL1 TP316L stainless steel welded pipe is an EFW pipe made from austenitic stainless steel (Grade 316L). Its low carbon content enhances weldability and corrosion resistance, making it particularly suitable for chloride environments. CL1 refers to the Class 1 designation in the A358 standard. Class 1 covers pipes that are duplex welded using a full penetration welding process. These welded pipes are capable of withstanding higher internal pressures. TP316L, a low-carbon version of TP316 stainless steel, offers enhanced corrosion resistance, especially in environments with sensitization potential, such as welding applications. As Class 1 pipe conforming to the ASTM A358 standard, all welds are duplex welded with filler metal and undergo comprehensive radiographic inspection.

 

ASTM A358 CL1 TP316L stainless steel welded pipe

Specification of ASTM A358 EFW Pipes

Standard Specification ASTM A358
ASME SA358
Size ½ to 6 inch Nominal Bore
Types Welded, Seamless, ERW, EFW Supplier and Manufacturer
Wall Thickness 0.1 - 60 mm
Length

Single Random Length 5 to 7 Meter

Double Random Length 10 - 12 Meter

Surface Finish Polished, Bright, Annealing, Cold Finish, Pickling
Schedule Pipe Thickness Range Schedule 160, Schedule 60, XS, Schedule 120, Schedule 40, STD, Schedule 140, Schedule 20, Schedule 80, Schedule 80, XXS, Schedule 30, Supplier in Mumbai
Standard ASME, DIN, JIS, ASTM, GB, AISI, AMS, EN, GOST
Manufacturing Shapes

Square, Round, Box Section, Rectangle

 

ASTM A358 TP316L EFW Pipes Chemical Composition

Grade   Ni Cr Si Mn C P S
TP316L Min 10.0 16.0          
Max 14.0 18.0 0.75 2.0 0.03 0.045 0.03

 

ASTM A358 TP 316L stainless steel welded Pipes Mechanical Properties

Grade Tensile Str Ksi(Mpa) Yield Str Ksi(Mpa) Elongation(%)
TP316L ≥70(485) ≥25(170) ≥40

 

Applications of ASTM A358 TP316L Stainless Steel Welded Pipe
Chemical and Petrochemical Industries: ASTM A358 CL1 TP316L welded pipe is suitable for chemical processing plants, refineries, and petrochemical facilities. It is suitable for conveying corrosive substances such as acids, solvents, and chemicals.
Oil and Gas Industries: ASTM A358 TP316L EFW  pipe is suitable for conveying fluids such as crude oil, natural gas, and refined petroleum products within the oil and gas industry.
Power Generation Industries: ASTM A358 CL1 TP316L stainless steel welded pipe is suitable for power plants, particularly in high-temperature and steam-based environments. It can be used in boiler piping, heat exchangers, condensers, and other components handling hot water or steam. 

 

If you have TP316L stainless steel pipe project needs, we are a professional exporter and supplier of ASTM A358 TP316L CL 1 EFW welded pipe and ASTM A358 TP 316L stainless steel pipe (UNS S31603 CLASS 1 / 2 / 3 / 4 / 5). Feel free to place your order. GNEE stocks a large selection of best-selling products. Please contact our factory for detailed chemical composition and free samples. We offer competitive pricing and excellent service.

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ASTM A358 TP 316L stainless steel welded pipe is packaged in waterproof paper and steel strapping, meeting standard export seaworthy packaging requirements and suitable for various modes of transport. Custom packaging is also available upon request.

 ASTM A358 TP316L Stainless Steel Welded Pipe

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