????????? ???п???? ?????п????????
???п??
???п???????????????????巴?????????????????????????????????п????????????????????????????????????????????????炙????п?????????狀????п??????????н??????????????????????С????п???ж?????????????????????????????
??п????????
????????????????в??????
1?????=3.14[(D/2)*2-(d/2)*2]x1000mmx7.8x10-6 kg/mm*3x5.7?/kg
D???????? d ????????
?????п???????飺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
|
?????λ???
?? ? ? ?? 
