????????????????????????
????????????????????塢???????????п?????????????????????????и????????????????????????????????????????????????????????????????????????????м????????????????????????????????????????????????????????????似???????????420MPa?????????????????????????????????
???????????????????????
10??2000??8000 21??
10??2000??8000 52??
10??2000??8000 42??
10??2000??8000 35??
12??1800??8000 42??
12??2000??8000 42??
12??2000??8000 32??
14??2000??8000 65??
????????
??????????50????????м??????20?????????????38000??????????2800??????????40000????????2000?????????????30???????2???25????????????????й?????????????г???????????????????????????????и?????????????12?????160??????????????????????????????????????е?豸???????????????и????????????????8-600mm???4.6m??????15m???????и??????????????????????????????????к?????????????????????豸??????????????????????????????????????и??????????б???????????????μ????????????????簲????????????????????????????????????
????40*1.8*7??Q345qD???????????????????????
