???????????????????
???????????ú????????????????Ч?档????????????????????????????????????????????????????2000???7000?????????2012??74350??????????????????????????????34.46??????68.21????????????????????????ú???????????????????????????λ????????????г???????????????????????????????
??????????????????
8??2000??8000 35??
8??2000??8000 42??
8??2000??8000 21??
8??2000??8000 32??
12??2000??8000 79??
??????????????????
???????????????????????????????壬????????????????????????????????????β????q????????
???????????????????·??·???????塣????н????????????????????????????????????????????????????????????????????????????
????????
???????????????й??????????????????????????????????ASTM??ASME????????JISS????????DIN????????BS????????? IO????????EN ???????????????????????????????????и???????????????????????????????8-600mm???4.5m ??????18m????????????????? ?????????????????????m??0.5mm????????100mm???8mm?????γ???1mm???и??????? 100mm?12.5????100mm?25???и??????????????
???????????10*1600*C??16Mnq??????????????????????
