1>Standard: JIS, AISI, ASTM, GB 2>Type: Welded NameSTAINLESS STEEL PIPE & STAINLESS STEEL TUBEStandardASTM A554, A249, A269 and A270, A312Material Grade201 ( Ni 0 ... ) Length: +/- 5mmSurface180G, 320G, 400G Satin / Hairline400G, 500G, 600G or 800G Mirror finishApplicationDecoration construction, upholstery, industry instrumentTestSquash test, extended test, water pressure ...