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