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