????Q420q???????????
??????????????????????????????г??????????????????????????????;????????????????
?г????????????????г??????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????????
??????????????????????
Q420q??????????????????
50*2200*8000+ 32??
60*2200*7000+ 75??
50*4030*555+ 98??
70*2200*9500+ 32??
80*2200*8000+ 56??
Q420q??????????????????
??弴??????????塢??Q345??壨???16mn??16Mn(Q345)??16Mn??Q345???????????????????????????????????к???????????4mm-60mm??Χ???塣
16Mn????Q345??
Q345??????A??B??C??D??E?????
16Mn(???????1??2??3?????
16MnR??????????????????????R?????????????????????????????
16MnD?е?D???????
16MnR?????????????????????????軺??????????30??????100-150????????????J507????????????????Щ???????????????J507RH??
???????????????лл ?? ????? ?????Q420q???????????
??????????Q420q???????????????