ASTM A312, A358, A778 JIS G3459

Standard: ASTM A312, A358, A778 JIS G3459

Material/Steel Grade: TP304, TP304L, TP316L SUS304TP, etc.

Application: Industrial Pipes

Size: OD: 1/4″~40″WT: SCH5S~SCH80S

Finish: No.1(Hot Rolled), 2B(Cold Rolled), BA, 2BA, Mirror(No.8), etc.

Shapes: Round Welded Tube, Channel Welded Tube, Square Welded Tube, Hex Tube, U Tube, etc.

Services: Bending – Cutting – Grooving – Polishing – Threading

ASTM A312 vs ASTM A358

What is ASTM A312?

ASTM A312 TP 304 / 304L stainless steel pipe is the most widely used and commonly used stainless steel on the market. These grades are austenitic chromium alloys, also known as “18/8” stainless steels because the composition of the steel is 18% chromium and 8% nickel. The common grades for this specification are 304/304L and 316/316L.

What is ASTM A358?

ASTM A358 is a specification for electric-fusion-welded austenitic stainless steel pipe that performs well in high-temperature industrial applications.

Industrial Applications

Stainless steel welded pipe is corrosion-resistant and this type of material is extremely durable in harsh conditions. This type of pipe is popular in industrial applications in the following industries:

  • Chemical
  • Food and beverage
  • Marine
  • Mining
  • Oil and gas
  • Pharmaceutical
  • Petrochemical
  • Power generation
  • Renewable energy


The Stainless Steel welded pipe can be cheaper to manufacture than the seamless pipe for your applications that require corrosion resistance. As an ASTM A312 & A358 welded pipe distributor, we will help you get the materials you need to complete your project on time and on budget.

Leave a Reply

Your email address will not be published. Required fields are marked *