... ,bake galvanized,black heavy type,light type Material:malleable ironSize:1/4-6inchSurface:Hot dipped galvanized,electric ... ,black;with ribs and without ribs.Standard:BS standard,DIN standard,American standard.Certificate:ISO9001:2008FrankHebei Wanda Malleable Iron ... Corp.,Ltd Elbow with rib/electro dipped galvanized