?????????(GB/T8162-1999)
?????????????GB8162-1999?????????????????????GB8162-1999????????仯???£? 
?????????????????????? 
??????????2008-08-19???? 2009-04-01?? 
?????????????????:[(??-???)*???]*0.02466=kg/??(????????) 
????????????????? 
?????????????????????????? 
??????????????????б??? 
???????????????????? 
??????????????????? 
???????????????????????? 
?????????????????????Э????? 
???????????????????????汾?????????? 
????????GB8162-1987??GB8162-1999 
??????????2008-08-19???? 2009-04-01?? 
?????????????????:[(??-???)*???]*0.02466=kg/??(????????)
?????????(GB/T8162-1999)
???????????:
?????????????????20G 16Mn
??б????GB5310-95 GB6479-86 GB9948-88
????
| 
 25??2.5-5  | 
 57??3-8  | 
 114??5-20  | 
 168??8-30  | 
 325??8-45  | 
| 
 28??3-5  | 
 60??4-10  | 
 121??5-20  | 
 180??7-30  | 
 351??10-36  | 
| 
 32??3-5  | 
 63.5??4-12  | 
 127??6-20  | 
 194??8-30  | 
 377??10-38  | 
| 
 38??3-6  | 
 76??4-14  | 
 133??5-22  | 
 203??10-32  | 
 402??10-45  | 
| 
 42??3-6  | 
 83??5-14  | 
 140??6-22  | 
 219??7-45  | 
 426??10-30  | 
| 
 45??3-6  | 
 89??4.5-20  | 
 146??8-25  | 
 245??8-45  | 
 480??12-30  | 
| 
 48??3-6  | 
 102??4-20  | 
 152??8-25  | 
 273??8-50  | 
 530??12-30  | 
?е????ˉ??????????????
????????????????? 20# dz40
??б???? GB3087-1999  GB8163-1999  YB23-70