大兴安岭Half nipple

大兴安岭Nipple

大兴安岭Long nipple

大兴安岭Half thread long nipple

大兴安岭Hexagon nipple

大兴安岭Hexagon F/M nipple

大兴安岭Hexagon reducer nipple

大兴安岭Hose nipple L-type

大兴安岭Hose connector whj

大兴安岭Hose connector WHS

大兴安岭Hose joint WRH for welding

大兴安岭Round water pipe joint wrhn