20#?????????????????????????????45#????????
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20#????????????|45#????????
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??????????GB3087-2008
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????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????20g?????ˉ???????????????;16Mn????????????????ù???????????????????????????????????????????????????????????????????????????????? ????????????:10#??20#??35#??45#??20G??40Cr??20Gr??16Mn-45Mn??27SiMn??Cr5Mo??12CrMo(T12)??12Cr1MoV??12Cr1MoVG??10CrMo910?? 15CrMo??35CrMo??40CrMo????????б???У?GB/T8162-1999??GB/T8163-1999??GB/T3087-1999??GB/T5310-1995??GB/T6479-2000??GB/T9948-1988??GB/T5312-1999??GB/T8162-99??GB/T8163-99??GB/T3807-99??GB/T5310-95??20G??ST45.8??GB9948-88???
????????????????
???????????402-1200*10-100mm
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???????????0510-88264321??88223334 ???棺0510-88223334 ?????18921237777
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