??????·?????????????????
????????
???????????????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??????????????
??·?????????????????????????
?????????????????????????????????????????????????????70???????50?????????????????37.7????????Щ??????????????????????????????????????????????0.7??????????????????????????????
12??16??12*1500*6000????·?????????????????????????μ???
