f?2.x方钢尺寸规格表尺寸规格见表一表一。国标号 GB/76728-2007表冷拔无缝方形钢管的尺寸规格V—上/-A-x基本尺寸截面面积/理论质量//惯性矩/截面系数/■42.51.841.451.211.10252.52.141.681.861.4932.491.952.081.572.52.642.083.412.273033.012.423.862.583.53.5...

时间:2025-05-20 05:23栏目:行业资料