????????{GB6479??????ù???}16Mn??????ù?-20#??????????
{GB6479??????ù???}
GB6479??????ù?:??????????豸??????????????????????豸???????????????????????????20??16Mn??12CrMo??12Cr2Mo???
GB6479??????ù????????????????-40~400?楨????????10~30Ma??????豸?????????????????????????
????GB6479??????ù????????????????-40~400?楨????????10~30Ma??????豸??????????????????????????
???????????????硢?????????????????????????????Q235A??B?????GB/T14980-1994????????????????????紙????????ˉ?????????????????????ú???????????????????????????????????????????Q235A?????
??????????????????????????
??????б????GB6479-2000??ASTM DIN JIS
????????????20# 16Mn??15CrMo,12CrMo??12Cr2Mo??
??????????????????:[(??-???)*???]*0.02466=kg/??(????????)
16Mn??????ù?-20#??????????????:0510-88268136
?????????????????????????????????????????????????????????????????????????????????????????С???????????????????????????????????????????????????????????,??????????????20#??45#??16MN??Q345??A/B/C/D/E????27SIMN??15CrMO??12Cr1MOV??10CrMO910??304??304L??316??316L??321??P11??P22??P91??T91.??й???GB8162-99?????GB8163-99????????????ù?????????GB3087-99??GB5310-85????????ˉ?ù??GB5312-8???ù??...
???????????0510-88264321??88223334 ???棺0510-88223334 ?????18921237777
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