????45#?????????е?????????????????????
????
???????????????????????????????????á?
????45?????????????????????????450???????????????????????????????????顣
????45??:?????????0.42-0.50%,??????????0.17-0.37%,??????????0.50-0.80%,?????????<=0.035%,?????????<=0.035%,?????????<=0.25%,?????????<=0.2545??
???????0.45%????.
???????????????
????????850
???????840
???????600
??????????????С??600Mpa
??????????????????????
{???????????}0510-88268136 88267553 18921511196
{????????????}0510-88268567 88264321 13382886444
{????????????}0510-88269158 88269156 13646176766
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