辽阳Half nipple
辽阳Nipple
辽阳Long nipple
辽阳Half thread long nipple
辽阳Hexagon nipple
辽阳Hexagon F/M nipple
辽阳Hexagon reducer nipple
辽阳Hose nipple L-type
辽阳Hose connector whj
辽阳Hose connector WHS
辽阳Hose joint WRH for welding
辽阳Round water pipe joint wrhn
