NPT Black pipe fitting 1>BS American DIN 2>Banded, beaded, plain 3>Hot ... galv, bake galv, black 4>1/8~6" NPT Black pipe fittingProduct Itemelbows, tees, sockets, bends, nipples, unions, crosses, flanges, plugs ... Excellent material, precise angles, good antirust propertyProduct UsageSuitable for joining pipe lines of steam, gas, oil, air