Body symmetry, in particular welded body structure, well under the stress from the pipe.

阀体对称，尤其是焊接阀体结构，能很好地承受来自管道的应力。

youdao

Body symmetry, in particular welded body structure, well under the stress from the pipe.

阀体对称，尤其是焊接阀体结构，能很好地承受来自管道的应力。

youdao