... FROM WENZHOU 1. O.D.: 6-580mm 2. Thickness: 0.89-35mm 3.Surface: Annealed/Pickled/Polish WENZHOU stainless steel pipe ... .D.: 6-580mm (NPS: 1/8"-20")4) Thickness: 0.89-35mm (SCH 5S-XXS according to ANSI B36.10;36 ... testing the products quality such as direct-reading spectrograph, spectrophotometer, CS analyzer, intercrystalline corrosion tester, hydraulic tester, universal testing instrument for ...