... :American standard,British standard, DIN standard8, Type:galvanized cast iron pipe fitting elbow9,Certificate: ISO900110,Edge : beaded,banded,plain11,Shape: equal ... and reducing two kinds with or without rib12,Every pipe fitting we send you under strict quality control13,working pressure ... , test pressure is 2.4Mpa14,Divided into 3 series:heavy,light,middle Hot dipped GI pipe fittings socket