方矩管規格尺寸
10×dao10,12×bai12,18×18,23×du23,38×38,50×50,70×70,100×100,20×10,23×10,24×12,25×13,36×23,40×20,50×20,60×15,75×45,80×60,95×45,100×60,150×100
