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