?J????????????????????GB9948??????????????I 
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????GB9948-2006???й???????  
    
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????10??20??15CrMo??1Cr2Mo??1Cr5Mo??  
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????10??20<??????????????ι?????>  
????15CrMo<??????????+?????ι?????+???>  
????1Cr2Mo<??????????+?????ι?????+???>  
????1Cr5Mo<???>  
?????????????????????????-???X???X0.02466=KG/M  
?????????????-???X???X0.02486=KG/M  
????GB9948???????????????:0510-88268136/18921511196?????? 
                       
                       
                      ?????????????????????????????????????????????????????????????????????????????????????????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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