Forbid welding the flange after installing the valve. Both sides of the flange should be added the asbestosgasket.
严禁装上阀门后施焊法兰·法兰两边加石棉垫片。
2
The leakage event of a non-asbestosgasket was taken place at the manhole flanged joint of a boiler after more than one-year service.
一台废热锅炉人孔用非石棉纤维橡胶垫片服役一年多后发生泄漏。
3
By analyzing for the flange leakage on a heavy oil catalytic pyrolysis unit, the writer put forward a treatment method, i. e. to replace old asbestosgasket with a compound corrugated gasket.