27SiMn???????  27SiMn????325*40???ж???
27SiMn??????? : 
| 
 | 
 203??16  | 
 27simn  | 
 0.013  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 203??25  | 
 27simn  | 
 1.214  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 203??26  | 
 27simn  | 
 0.426  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 219??20  | 
 27simn  | 
 3.762  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 219??22  | 
 27simn  | 
 18.059  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 219??24  | 
 27simn  | 
 6.315  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 219??25  | 
 27simn  | 
 2.456  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 245??25  | 
 27simn  | 
 2.2  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 245??27  | 
 27simn  | 
 3.648  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 273??25  | 
 27simn  | 
 4.505  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 273??27  | 
 27simn  | 
 4.342  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 273??30  | 
 27simn  | 
 1.945  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 273??54  | 
 27simn  | 
 1.275  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 325??28  | 
 27simn  | 
 1.104  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 325??40  | 
 27simn  | 
 1.195  | 
 ????  | 
 ???????  |  
| 
 ?????  | 
 377??45  | 
 27simn  | 
 2.88  | 
 ????  | 
 ???????  |    
27SiMn????325*40???ж???: 
????????????W=0.02466*S(D-S) 
???????? ??D=?? S=??? 
??????? ?????60mm???4mm???????????m?????? 
?m????=0.02466*4*??60-4??=5.52Kg 
                       
                       
                      ?????????????????????????????????????????????????????????????????????????????????????????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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