... plain hot dipped galvanized,electric galvanized,bake galvanized,black heavy type,light type SZ is our brand. The "SZ" brand malleable iron ... on.Our products are of rich assortments:banded,beaded,and plain;galvanized and black;with ribs and without ribs;heavy and ... ,DIN standard,American standard.Certificate:ISO9001:2008FrankHebei Wanda Malleable Iron Corp.,Ltd Galvanized Iron pipe fitting tee with rib