... pipe fittings socket 1,Mature Technology 2,delivery on time Hot dipped galvanized iron socket:1,Mature Technology 2,Delivery on ... , Size:rang from 1/2" to 6"6, Surface finish:hot dipped galvanized,electric galvanized,bake galvanized,black7, Standard:American standard ... , test pressure is 2.4Mpa14,Divided into 3 series:heavy,light,middle Hot dipped GI pipe fittings socket