... so on.Our pipe fittings have accurate geomerty,excellent mechanical function,hermetical sealing and good interchangeability.We are one of the ... ,heavy and light...Our main products contain ELBOW,TEE,BEND,SOCKET,BUSHING,NIPPLES,UNION,FLANGE,PLUG,CAPS,CROSSES etc.I hope ... cooperation in future.LING LIHEBEI WANDA MALLEABLE IRON CORP.,LTD Socket half threads