(七)钢丝纱(窗纱)规格和重量
                    积(m2/卷)          
(kg/卷) kg/m2
143x100 27.87 12.5 0.448
144x100 37.16 16.6 0.448
163x100 27.87 13.5 0.484
164x100 37.16 18.0 0.484