GBT 10546-2013 在 2.5MPa及以下压力下输送液态或气态液化石油气(LPG)和天然气的橡胶软管及软管组合件 规范.pdf
BRITISH STANDARDBS 7504:1995ISO 6164:1994Hydraulic fluid power — Four-screw, one-piece square-flange connections for ...
