... ,WP22 ANSI B16.9,JIS,DIN,GB,etc ISO9000:2000 carbon steel concentric reducer2/1"-48" A234WPB,A420WPL6,A234WP5,WP11,WP12 ... ) Pressure:SCH5S -SCH160. 4)ISO9001 and CE certificateSize1/2"- 72"Wall thicknessSch 10- Sch xxsApplicable standardANSI B 16.9,ASME , ASTM ...