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

GB/T12771-1991 (Welded Steel Pipe for Fluid Transportation). Primarily used for transporting low-pressure corrosive media. Representative materials include 0Cr13, 0Cr19Ni9, 00Cr19Ni11, 00Cr17, 0Cr18Ni11Nb, and 0017Cr17Ni14Mo2.

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