 |
| |||
| 钢管 (【技】两端开口、断面中空、纵向形状相同、长度与周边之比较大的一类钢材。通常断面为圆或方形，也有断面为梯形、椭圆和各类非对称形状的产品。钢管采用拉拔法、轧制法、挤压法、穿孔法及焊接法生产。前四种方法生产的钢管为无缝钢管，后一种方法生产的钢管为焊接钢管。拉拔通常在冷态下进行；轧制可以在冷态下进行，也可以在热态下进行。挤压和穿孔一般是在热态下进行。) | |||
| steel pipe: 341 phrases in 25 subjects |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips