Dear All,
Thanks for your helpful responses. I would like to answer some of the queries raised.
1. Bolts will be out because they intend to weld a matching pipe, e.g. 508 x 11 mm to the raised face of the WN flange (DIN 2632 form C).
2. The problems arise partly because the contract...
Hi All,
We've got a little exotic problem. We are installing flanged butterfly valves,as per clients spec., into an existing district heating system. Design is according to DIN / EN standards, pipe sizes DN500 to DN800.
Now the client wants us to weld the pipes directly onto the flange faces...
