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????????? >> GB/T3639??????????//???????????????//?????????????
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427941816 |
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GB/T3639??????????//???????????????//????????????? |
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?????????????0510-88268136 |
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GB/T3639???????????//???????????????//?????????????
GB/T3639????????????
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?????????????????:0510-88268136 88267553 18921511196 13812042226 ??????
?????????????????????????????????????????????????????????????????????????????????????????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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??????\?????\?????????\GB/T3639?????????\???????????
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| ???????2275 ??????2011/4/27 ?????????? ??????? |
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