???????????????????????20#????????????????????и?????
????????????????20#??45#??16Mn??27SiMn??20G???
????????????????????????GB/T8162-2008?????????????GB/T8163-2008???? ?????ˉ??GB3087-2008???????ˉ??GB5310-2008??
??????????????20#??45#??16Mn??20G??27SiMn??
??????????????168-426mm*10-40mm
20#???????6-820mm*1-120mm
?????????????и?????
?????????????ξ?????????????????????и??????
?????????????????????????????????????????????????????????????????????????????????????????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
|
?????λ???
?? ? ? ?? 
