... : 15,000 tons Quality certificate: ISO9001:2008&BV 2) About Products: galvanized /black malleable iron pipe fittings Material: malleable iron 330-8Thread Standard: BS ... , cross, bushing, nipples, bends, sockets, plug, caps, backnut , unions. three type of end malleable iron pipe fittings beaded elbow malleable iron pipe fittings without ribs