七台河Half nipple
七台河Nipple
七台河Long nipple
七台河Half thread long nipple
七台河Hexagon nipple
七台河Hexagon F/M nipple
七台河Hexagon reducer nipple
七台河Hose nipple L-type
七台河Hose connector whj
七台河Hose connector WHS
七台河Hose joint WRH for welding
七台河Round water pipe joint wrhn
