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