Hot dipped galvanized iron pipe fittings coupling 1,Mature Technology 2,delivery on time Hot dipped galvanized iron coupling:1,Mature Technology 2,Delivery on time3 ... , Surface finish:hot dipped galvanized,electric galvanized,bake galvanized,black7, Standard:American standard,British standard, DIN standard8, Type:galvanized cast iron pipe fitting elbow9,Certificate: ISO900110 ...