NA 012

DIN Standards Committee Chemical Apparatus Engineering

DIN 28040 [Withdrawn] references following documents:

Document number Edition Title
DIN 28031 2013-09 Flange joints for process vessels - Weld flanges for unpressurized process vessels More 
DIN 28034 2013-09 Flange joints for process vessels - Weld-neck flanges for pressurized vessels More