Q420q??????????????????
????????????????????????C??0.12??0.21??Si??0.2??2.0??Mn??0.7??2.0??S ??0.036??P??0.034??Cu??0.10??0.40??Al<0.2???????Fe?????????????Cu?? Mn??Si??Al????????????????????(Q235??)????????????????????Q235?????????????????????????????????????????????????????е?????????????
????Q420q???????????
??????????????????????????????г??????????????????????????????;????????????????
?г????????????????г??????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????????
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Q420q??????????????????
28*2200*6000
30*2200*6000
32*2200*6000
34*2200*6000
36*2200*6000
38*2200*6000
40*2200*6000
42*2200*6000
44*2200*6000
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???38?????Q420q?????????????????