... ISO 9001 OEM SERVICE Malleable Iron Pipe FittingsISO 9001OEM SERVICE1. Product Item: Malleable Iron Pipe Fittings(elbows, tees, sockets, ... bends, nipples, unions, crosses, flanges, plugs, backnuts, crosses over, round caps, etc. ) 2. Thread ... be antirust treatment. 6. Product Usage: Suitable for joining pipe lines of team, gas, oil, air. Concentric Reducing Cocket ...