??????|????????-20#GB9948????????(???)
????????????????????????????.??????????????????????????????????????????????????????????????豸????????ú??????????????????????????????????????е??????????????????????????????????????????????????????????????????????????????????
?? ???????аι??????????????10#??20#??45#????18-127mm???3-20mm?????????????????????20#??16Mn??400-1600mm???20-60mm????????????12????????????????????????????????????????????????????10# 20#??35#??45#??16Mn??27SiMn??12Cr1MoV, 15CrMo??20G??
(1)??????????е?????????GB8162-87??
(2)?????????ˉ???????GB/T3087-1999??
(3)???????ˉ??????ST45.8/111??GB5310-85??
(4)?????????????????GB/T8163-1999??
(5)????λ??????????????GB3639-83??
(6)??????????????YB235-70??
(7)????????????YB528-65??
(8)???????????????????????GB8713-88??
(9)??????????????GB6479-86??
(10)???????ù??GB5312-85??
?????????????????????????????????????????????????????????????????????????????????????????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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