... pipelines to convey gas,water,and oil. O Brand Two Times Galvanized Malleable Iron Pipe Fitting union gasket :1.standard: ... EN10242,ISO7-1 ,NPT 2.banded , beaded 3. hot deep galv, bake galv, black 4.TUV,UL5. Brand: O ... etc.Size18"-6"Thread StandardBS ANSI & DINFinishBlack, Eclectic Galvanized, Hot Dipped Galvanized, all be antirust treatmentPackingCartons, woven bags, wooden boxesQuality ...