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20#????????|????????219*40 |
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20#????????|????????219*40
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219*20 |
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219*25 |
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??? | ???????б??
1???????????GB/T8162-2008???????????????е??????????
????2??????????????????GB/T8163-2008????????????????????????????????????
????3?????????ˉ????????GB3087-2008???????????????????????ˉ???????????????????????ˉ?ù???????????????????????????????????Σ???????????
????4???????ˉ????????GB5310-2008???????????????????????????????ˉ?????????????????????????????????????
????5???????豸??????????GB6479-2000?????????????????-40~400?楨????????10~30Ma??????豸??????????????????????????
?????????????????????????????????????????????????????????????????????????????????????????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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20G?????ˉ???????????|?????ˉ??
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ASTM A106C?????ˉ??|GB5310??ˉ??
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| ???????1996 ??????2010/4/24 ?????????? ??????? |
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