steel elbow 1. size: 1/2"-48" 2.w.t.: SCH10-SCH160,SGP,STD,XS,XXS, 3.material : ... ASTM A234 WPB , DIN , JIS, EN10253,GOST steel elbow 1. ... size: 1/2"-48" 2.w.t.: SCH10-SCH160,SGP,STD,XS,XXS ... , 3.material : ASTM A234 WPB , DIN , JIS, EN10253,GOST 4. type: ELBOW,carbon ...