Can the drain pipe for high-temperature and high-pressure steam pipelines be bent cold?
Thread Content
For high-temperature and high-pressure steam pipes at 9.8 MPa and 540 degrees, can the drain pipes be bent cold? DL5054 specifies that pipes with a pressure rating of 1.0 MPa or less and a diameter of DN50 can be bent cold, but it does not state that bending cold is not allowed for pipes with higher pressure ratings; in practice, many construction teams still bend such pipes cold Is this against the guidelines? Is there a problem?
It depends on the material of your pipe, its wall thickness, and the bending radius; generally, stress-relief annealing and hydrostatic testing are also carried out after cooling