... steel 2)Finish:yellow Zinc plating 3)Standards:SAE,JIC,BSP,NPT,DIN etc Elbow Fittings1) Material: carbon steel, alloy steel ... , brass, zinc 2)Finish:yellow Zinc plating3)Standards:SAE,JIC,BSP,NPT,DIN etc4) Applications: machinery, transportation, oil fields,mining, equipment ...