
Butterfly Valves; Soft Material Seat Steel Or Cast Steel, Tight Butterfly Shutoff Valves With Flanged Ends Or Weld-on Ends
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Applies in conjunction with DIN 3354 Part 1 to soft material seat seal steel or cast tight butterfly shut-off valves with flanged ends or weld-on ends (hereinafter briefly referred to as 'shut-off' valves).