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锟斤拷锟絘(ch锟斤拷n)锟斤拷(bi锟斤拷o)锟斤拷(zh锟斤拷n)锟斤拷同锟斤拷锟节現(xi锟斤拷n)锟叫橈拷(bi锟斤拷o)锟斤拷(zh锟斤拷n)锟叫ｏ拷锟斤拷锟絇鋼圓锟街窰PB235锟斤拷(j锟斤拷)鋼斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絘(ch锟斤拷n)锟斤拷(bi锟斤拷o)锟斤拷(zh锟斤拷n)锟角★拷鋼斤拷锟斤拷锟斤拷锟斤拷脽锟杰堬拷锟斤拷锟戒摻睢�(GB13013)锟斤拷锟斤拷锟絇锟斤拷菁y锟揭伙拷锟街窰RB335锟斤拷HRB400锟斤拷(j锟斤拷)鋼斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絘(ch锟斤拷n)锟斤拷(bi锟斤拷o)锟斤拷(zh锟斤拷n)锟角★拷鋼斤拷锟斤拷锟斤拷锟斤拷脽锟杰堬拷锟斤拷锟戒摻睢�(GB1499)锟斤拷

锟斤拷(qi锟斤拷ng)锟饺诧拷同锟斤拷锟斤拷锟絇鋼圓锟�(HPB235)锟斤拷锟絆(sh锟斤拷)計(j锟斤拷)锟斤拷(qi锟斤拷ng)锟饺烇拷210MPa锟斤拷锟斤拷锟絇锟斤拷菁y鋼的忥拷(qi锟斤拷ng)锟斤拷锟絕锟斤拷锟絇鋼圓锟揭拷锟�锟斤拷HRB335锟斤拷锟絆(sh锟斤拷)計(j锟斤拷)锟斤拷(qi锟斤拷ng)锟饺烇拷300MPa锟斤拷HRB400锟斤拷锟絆(sh锟斤拷)計(j锟斤拷)锟斤拷(qi锟斤拷ng)锟饺烇拷360MPa锟斤拷