????-????????-????20#?????-??????:????????????
????-????????
????(Seamless tube)?????????п???楨?????н?????????????????????????????????110????????1850???????μ?5100??????????????????????????44???????170???????μ?260???????
????20#?????:
????20#????????20???????20??????20#????????????????????
????
20#????
20#????????20??
????20#????????GB/T8162-2008 GB/T8163-2008 GB/T6479-2000 GB/T9948-2006????20#????????????÷?Χ??
????????15???????????????????????????????????????????????????????????綃???????????????????????????С???????????????????????????????????????????????λ???????????????á???????????????????????????????
??????20#??????????
????? C ??0.17??0.24"?? Si??0.17??0.37?? Mn??0.35??0.65?? S ????0.035?? P ????0.035?? Cr????0.25?? Ni????0.25? Cu????0.25
??????:????????????
????????????б????GB/8163-2008
??????????????????????п???棬?????β????к??????????п???棬?????????????????????????????????ú????????Щ????????????????????????????????????俹?????????????????????????y??????????????????????е???????????????????????????г??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????￡????????????ι???????????????塣???????????????????????????????????????????????????????????????
?????????????????????????????????????????????????????????????????????????????????????????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???
?? ? ? ?? 
