Carbon steel unions, stainless steel unions Size:DN10-150,1/2"-6" Standard:JIS,DIN,ANSI tapeStraight Coupling; 90Degree Coupling; Double Coupler; Butt Joint Coupler; Swivel Coupler;Bowls ClaspsizeDN10-150,1/2"-6"standardJIS,DIN,ANSI BS1139 (1982 & 1991), EN74 class A & B and Full kinds of coupler Pressed Double CouplersurfaceZIP and HDG According to customer’s requirements