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????????(???)??????????? ???????????????????=??????????0.00617??1m ?? 0.00617?????10?????????????????12?????μ??????λС???????12??????????λС???????????6??7?? ????6??????????0.222????8??????????0.395????10??????????0.616????12??????????0.888??? ???????L????0.222????36????D?????????N??? ?磺???28??????500???????????500*0.222????36x28x28??2417.33kg????2.42?? ????????????????? ????????????????????? 1???????????????????????????????????????з??????????????????BS4449???У?????????? ??????? ??????????????????????????????? 2??????????????????????????????б????????????G B1499.2-2007??????1499.1-2008???У???????????????/?????????????????3??????????????????JI SG3112?? ?У??????????????????5??????????????BS4461???У???漲???????????????? ??????????????????????????з??????????????????????????????? ????????????????? ???????????????????? 1????????????????????????ó???????????????????????????????????? ???????????????????????????????????漲??????????????????????????????????????6??8??10??12??16??20??25??32??40??50mm?????????С???????????????????????????????????????Χ?6??12m??????????????????Χ?3.5??10m????????????????????????????????????????9m??12m????????? 2????????????й????ж??????????????????漲?????????е??????????治?????????????????????????????к???????????????????治??????????????????????????????????飬?????ó??????????????????????????????????????????λ???????????????????????????????????????й?????????漲???????????漲??????????????????????????????????????????????????0.4%??
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