???????????
?????????????
41*2480*9450
41*2480*9450
41*2480*9450
41*2480*9450
40*3100*9450
?????????????
????????HB??
??????????????3000kg?????????С?????????10mm??????????????????棬??????????????????????????????????????????????HB??????λ???????/mm2 (N/mm2)
???12??23???????4.0*1.5*6??q620qe????????г???????????????
