A182 Gr 316 SS 1

[NPE]

... Could somebody explain difference between A182 F316 and A403 WPS316 SS.

Thanks advance...

 

[metengr]

ASTM A403/A403M-04 Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings

ASTM A182/A182M-02 Standard Specification for Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service


The F indicates a forged product while WP is for a wrought (which could be seamless or welded).

You should purchase both specifications and review them carefully.