STAINLESS STEELECCENTRIC REDUCER MATERIAL carbon steel, alloy steel and stainless steel. SIZE 1/2"-72" DN15-DN1800 PRESSURE Sch10-Sch160 XXS CCS, API, and ISO9001:2000 Certificates etc., STANDARDS ANSI, DIN, JIS, BS, ISO, GB, SH, AND HG etc., Carbon steel: ASTM A234 WPB,WPC,ASTM A420 WPL1,WPL3,WPL6,WPHY42,46,52,56,60,65,70 Alloy steel: ASTM A234 WP1, WP12, WP11, WP22, WP5, WP7, WP8, and WP91 Stainless steel: ASME A403 WP304,304L,316,316L,310 Standards: ANSI , DIN , JIS , GB,ASTM,JB,SH,YB,SY,HG,API USE Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc