... used in various pipelines to convey gas,water,and oil. Hot Dipped Galvanized Malleable Iron Pipe Fitting used plumbing materials :1.standard: EN10242,ISO7 ... , etc.Size18"-6"Thread StandardBS ANSI & DINFinishBlack, Eclectic Galvanized, Hot Dipped Galvanized, all be antirust treatmentPackingCartons, woven bags, wooden boxesQuality Control Excellent material, precise angles ...