??????????20*1.8*7?????????????????????????????

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10??2000??8000 52??
10??2000??8000 42??
10??2000??8000 35??
12??1800??8000 42??
12??2000??8000 42??

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??塢??????????

    ???????????? d ?????? mm ????????????????????????b????d?????? mm ????????

    ????????й涨??????磬??????????У? 1mm ????壬?п???600??????2000 mm ??650??2000 mm ??700??1420 mm ??750??1500 mm ??900??1800 mm ??1000??2000 mm ???

???????????????????

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10?·????й?PMI????50.9??????3?????????????????ü????????????????????????????????????????????????г?????????????????????????????????????????????????????????????????????????????????????????????????????г???????δ?????????販??????????????????????????????????????????????????????????????????????л???????????????????



??????????20*1.8*7??????????????????????????????????