【正文】 400200225200223199812201880790109450200225200914202160936124450200250200248199914202840922150500200250200101620321010701691075002002532011119203670129019012850020030020029819910152452009912361006002003002001117245820114026211460020030320112202465801360292135600200方管理論重量表型號理論重量（kg/m）型號理論重量（kg/m）20*20*50*30*25*25*50*30*340*40*250*32*240*40*50*35*40*40*455*38*250*50*60*40*50*50*360*40*350*50*460*40*460*60*70*50*460*60*380*60*360*60*480*60*470*70*480*60*570*70*590*40*80*80*490*60*580*80*6100*60*3100*100*4100*60*4100*100*823100*60*5120*120*4100*60*160*160*160*80*只有你自己才能把歲月描畫成一幅難以忘懷的人生畫卷。m1截面特性參數(shù)HBt1t2r慣性矩/cm4慣性半徑/cm截面模數(shù)/cm3IXIYiXiYWXWYHN窄翼緣1005010050571019212560125606810417150751507557106791759017590581012201402001001989971316101141632001008131880134188250125248124581335602552872501256913408029432630015029814981664604434333001509167350508490350175346174691611200792649350175711161370098578211340015040015081316188007349424002003961997111620000