... " 3.Usage: Widely used in various pipelines to convey gas,water,and oil. Galvanized Water Malleable Iron Pipe Fittings:1.standard ... etc.Size18"-6"Thread StandardBS ANSI & DINFinishBlack, Eclectic Galvanized, Hot Dipped Galvanized, all be antirust treatmentPackingCartons, woven bags, wooden boxesQuality Control ... joining pipe lines of team, gas, oil, air Galvanized Water Malleable Iron Pipe Fittings