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钢 类焊接钢管(外径×壁厚 )/ｍｍ2冷拉钢丝(直径 )/ｍｍ2热轧钢带(厚度×宽度 )/ｍｍ2冷轧钢带(厚度×宽度 )/ｍｍ2热轧扁钢(厚度×宽度 )/ｍｍ2碳素结构钢 8∽ 1 1 4× 0 .70∽ 4.0 0 0 .3 0∽ 8.70 2 .0 0∽ 4.75× 50∽ 1 900 .1 0∽ 3 .0 0× 3 0∽ 2 2 07.0 0∽
Steel welded steel pipe (outer diameter × wall thickness) / mm2 Cold drawn steel wire (diameter) / mm2 Hot-rolled steel strip (thickness × width) / mm2 Cold-rolled steel strip (thickness × width) / mm2 Hot-rolled flat steel Width) / mm2 Carbon structural steel 8∽ 1 1 4 × 0 .70∽ 4.0 0 0 .3 0∽ 8.70 2 .0 0∽ 4.75 × 50∽ 1 900 .1 0∽ 3 .0 0 × 3 0∽ 2 2 07.0 0∽