1.standard: BS, DIN ,American 2.banded , beaded ,plain 3. hot deep galv, bake galv, black 4.size from ... '-6' 5.TUV,UL, Product Itemmalleable iron pipe fitting: elbows, tees, sockets, bends, nipples, unions, crosses, flanges, plugs, backnuts, crosses over ... UsageSuitable for joining pipe lines of team, gas, oil, air malleable iron pipe fitting