圆形钢管的型号规格主要包括以下内容：
外径（mm）与壁厚（mm）
302.02 - 5 - 5
574.0 - 63.5 - 63.5
56.0 - 4.5 - 4.5
53.0 - 4.5 - 3.0
35.0 - 34.0 - 34.0
2.0 - 5
6.0 - 2.0 - 2.0
4.5 - 7.0 - 302.5
52.0 - 55.0 - 55.0
2.0 - 2.0
3.0 - 3.0 - 3.0
5.0 - 2.5 - 2.5
5.0 - 4.0 - 4.0
6.0 - 2.0 - 2.0
4.5 - 2.0 - 2.0
7.0 - 3.0 - 3.0
38.0 - 52.0 - 52.0
55.0 - 2.0 - 2.0
3.0 - 3.0 - 3.0
5.0 - 2.5 - 2.5
5.0 - 4.0 - 4.0
6.0 - 2.0 - 2.0
4.5 - 2.0 - 2.0
7.0 - 3.0 - 3.0
38.0 - 52.0 - 52.0
55.0 - 2.0 - 2.0
3.0 - 3.0 - 3.0
5.0 - 2.5 - 2.5
5.0 - 4.0 - 4.0
6.0 - 2.0 - 2.0
4.5 - 2.0 - 2.0
7.0 - 3.0 - 3.0
38.0 - 52.0 - 52.0
55.0 - 2.0 - 2.0
3.0 - 3.0 - 3.0
5.0 - 2.5 - 2.5
5.0 - 4.0 - 4.0
6.0 - 2.0 - 2.0
4.5 - 2.0 - 2.0
7.0 - 3.0 - 3.0
38.0 - 52.0 - 52.0
55.0 - 2.0 - 2.0
3.0 - 3.0 - 3.0
5.0 - 2.5 - 2.5
5.0 - 4.0 - 4.0
6.0 - 2.0 - 2.0
4.5 - 2.0 - 2.0
7.0 - 3.0 - 3.0
38.0 - 52.0 - 52.0
55.0 - 2.0 - 2.0
3.0 - 3.0 - 3.0
5.0 - 2.5 - 2.5
5.0 - 4.0 - 4.0
6.0 - 2.0 - 2.0
4.5 - 2.0 - 2.0
7.0 - 3.0 - 3.0
38.0 - 52.0 - 52.0
55