... various pipelines to convey gas,water,and oil. Hot Dipped Galvanized Malleable Iron Pipe Fitting used plumbing materials :1 ... Size18"-6"Thread StandardBS ANSI & DINFinishBlack, Eclectic Galvanized, Hot Dipped Galvanized, all be antirust treatmentPackingCartons, woven bags, wooden boxesQuality ... pipe lines of team, gas, oil, air Hot Dipped Galvanized Malleable Iron Pipe Fitting used plumbing materials