GB3639-2000????????|???????????е????????
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????DIN2391-2
????HK15-2000
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???? / ?? BKW ??????????????С?????????????????????????????????????Σ????磺???????????
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?????????????? BKS ??????????? Ac 1 ???????????????????????
??? GBK ??????????????????????????е???????
???? NBK ??????????????????????????е?????
?????????????????????????????????????????????????????????????????????????????????????????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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