ASTM A358 EFW 316 / 316L Pipes

ASTM A358 EFW 316 / 316L Pipes are molybdenum-bearing austenitic stainless steel welded pipes, manufactured using Electric Fusion Welding (EFW) process for enhanced reliability and strength. They are suitable for corrosive, high-temperature, and industrial environments.

Grade 316 offers excellent resistance to pitting, crevice corrosion, and chloride-induced corrosion, while 316L provides improved weldability due to its low carbon content, reducing the risk of intergranular corrosion.

ASTM A358 EFW 316 / 316L Pipes

Specifications

Standard ASTM A358 / ASME SA358
Grade 316 / 316L
Manufacturing Process Electric Fusion Welded (EFW)
Size Range 1/2" NB to 24" NB
Wall Thickness Schedule 5S to Schedule 80S
Length 6 Meters Standard / Custom Length
Surface Finish Annealed & Pickled, Polished, Matte Finish
End Type Plain End, Beveled End, Threaded

Key Benefits

Chemical Composition (Typical)

Element 316 (%) 316L (%)
Carbon 0.08 Max 0.03 Max
Chromium 16.0 – 18.0 16.0 – 18.0
Nickel 10.0 – 14.0 10.0 – 14.0
Molybdenum 2.0 – 3.0 2.0 – 3.0

Applications

Quality Testing

Conclusion

ASTM A358 EFW 316 / 316L Pipes combine corrosion resistance, strength, and weld reliability for industrial and chemical applications. Their EFW construction ensures a consistent seam, uniform wall thickness, and long-term durability in demanding environments.