... :1/2" to 56" 2.thickness:sch10-sch160 3 standard:ASTM,DIN,JIS,KS,EN,BS ASTM/JIS/KS/EN//DIN ReducerSize: ... 1/2"-56"Wall thickness:SCH10-SCH160XXSStandard:ISO ... an area of 15,000 square meters. We are ISO9001, KS, API certified. Our products are sold well in Korea, ... Any inquiry will be replied within 24 hours. ASTM/JIS/KS/EN//DIN Reducer