严禁装上阀门后施焊法兰·法兰两边加石棉垫片。

Forbid welding the flange after installing the valve. Both sides of the flange should be added the asbestos gasket.

youdao

严禁装上阀门后施焊法兰·法兰两边加石棉垫片。

Forbid welding the flange after installing the valve. Both sides of the flange should be added the asbestos gasket.

youdao