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