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269GB/T50080-2002GB/T50081-2002120564/cm2210.53450kg50g5kg1g200cm31000cm31123430L4~5min30~50L5~9min50L9~12min21232min2min42327030min5.1121/32535~10s150s4mm5mm5ab65~101m150g270mm1002003005.127170mma5L255L100mm100cm21215b3m250g40kg/m310kg/m3Vmm120-=VL12344-8112a70mmb70mm20mm~30mm272212052029010~20mm2202PH73311mmAmm223C300.3~0.5MPa/sC300.5~0.8MPa/sFN1fc,cu0.1MPaAFfcu,c=21215315150mml50mml50mm5.1