合用于作受力及承压件，也可用于一般用途的蒸汽、水、气体及空气管线。

For mechanical and pressure use, and also for transporting steam, water, gas and etc.

youdao

合用于作受力及承压件，也可用于一般用途的蒸汽、水、气体及空气管线。

For mechanical and pressure use, and also for transporting steam, water, gas and etc.

youdao