Post bend heat treatment of cold bent tubes
Post bend heat treatment of cold bent tubes
(OP)
EN 12952-5 demands cold bent tubes with R/d less than 1.3 must be stress relieved. However, stress relieving can be waived if it can be demonstrated with a suitable procedure test that heat treatment is not required. The tubes are low alloy steel. What kind of tests can demonstrate the heat treatment is not required? We have to convince the inspector.





RE: Post bend heat treatment of cold bent tubes
Regards,
Mike
RE: Post bend heat treatment of cold bent tubes