?????????????
10??2000??8000 76??
10??2000??8000 70??
4??1500??8000 21??
10??2000??8000 70??
4??1500??800035??
4??1500??8000 80??
8??1800??8000 70??
?????????????
????????HB??
??????????????3000kg?????????С?????????10mm??????????????????棬??????????????????????????????????????????????HB??????λ???????/mm2 (N/mm2)
????????
??????????????????????????????????????????????????????????????????????????ó?????????????????????????????????????????????豸??????????????????????????????????????????????Χ???????????????????????????????????????????????????????????????????????????????????????????????????????и??????????????е??????
???????й???40*1800*8m??q420q???????????
