Iron Sand Casting Galvanized Airbrake Coupler Tailong Hardware & Machinery Co., Ltd. Base Info Machining Tolerance:+,-0.02mmSurface Treatment:GalvanizedCasting Metal:Cast IronCasting Form Material:SandCasting Method:Sand Casting Description Pre:Supply Taifeng Htl7300-4-18.1A Two-Way Cartridge Valve 730t Injection Molding Machine Next:OEM Service Malleable Iron Part