短直接头产品型号QGJK产品特点广泛使用于油田、化工、煤矿、电站、科研、船舶、环保、工程建设、机械、冶金、化肥、造纸、能源、生物医药、制冷、食品等各种领域等行业。详细信息：真空管道连接件■DND1D2L标准1016122070GB4982-85ISO-KF1620162070253026207040454120705054502070■DNLL1标准164040GB4982-85ISO-KF255050406565507070■DNLA标准168040GB4982-85ISO-KF251005040130655014070■DNA标准1040GB4982-85ISO-KF165025654070C***TRUCTIONFIGHTS（mm）■DNBB1HE标准101645611622GB4982-85ISO-KF2025557217.53232407090184750951232561■DNDN1AA1标准25163535GB4982-85ISO-KF4016404550165050■DNDN1标准2516GB4982-85ISO-KF4016402550255040■DNL标准162505007501000GB4982-85ISO-KF252505007501000402505007501000502505007501000■DNL标准1680GB4982-85ISO-KF2510040130■DNdH标准10305GB4982-85ISO-KF163052540540555)