GB/T12770-2002 (Welded Steel Pipes for Mechanical Structures). Primarily used in machinery, automobiles, bicycles, furniture, hotel and restaurant decorations, and other mechanical components and structural parts. Representative materials include 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, etc.

GB/T12771-1991 (Welded stainless steel pipes for fluid conveyance). Primarily used for conveying low-pressure corrosive media. Representative materials include 0Cr13, 0Cr19Ni9, 00Cr19Ni11, 00Cr17, 0Cr18Ni11Nb, 0017Cr17Ni14Mo2, etc.

Decorative welding stainless steel pipes (GB/T 18705-2002), stainless steel straight seam welded pipes for building decoration (JG/T 3030-1995), large diameter electric welding pipes for low-pressure fluid conveyance (GB/T 3091-2001), and straight seam welding pipes for heat exchangers (YB4103-2000).