... gas,water,and oil. Hot Dipped Galvanized Malleable Iron Pipe Fitting used plumbing materials :1.standard: EN10242,ISO7-1 ,NPT ... galv, black 4.TUV,UL5. Brand: O Product Itemcast iron pipe fitting : elbows, tees, sockets, bends, nipples, unions, crosses, ... propertyProduct UsageSuitable for joining pipe lines of team, gas, oil, air Hot Dipped Galvanized Malleable Iron Pipe Fitting used plumbing materials