banded,beaded,plain hot dipped galvanized,electric galvanized,bake galvanized,black heavy type,light type Material:malleable ironSize:1/4-6inchSurface:Hot dipped galvanized,electric dipped galvanized,bake galvanized,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 ...