GabrieleB
Petroleum
- Feb 4, 2009
- 84
Have anyone had experience with Duplex Cold Bending.
I'm working on a pipeline engineering with duplex pipe (S31803) 6"/4" thick. 4.8mm.I have to specify a limit angle for the cold bending on site. Some people has experience with 15°, someone else with 30°. There is also Company like SHELL that prohibit the cold bending of duplex.
Obviously there is a lot of parameters that influence the feasibility of this process. very important is also beending speed and method of bending. A this phase (engineering)is not possible to give an answer but rather a good practicse.
In my opinion 15° could be feasibile, but have to be considered that high pressure condition (96 barg) and very very low thickness do not permit high margine on thinning or wrinkling. Waiting for your experience on this matter.
I'm working on a pipeline engineering with duplex pipe (S31803) 6"/4" thick. 4.8mm.I have to specify a limit angle for the cold bending on site. Some people has experience with 15°, someone else with 30°. There is also Company like SHELL that prohibit the cold bending of duplex.
Obviously there is a lot of parameters that influence the feasibility of this process. very important is also beending speed and method of bending. A this phase (engineering)is not possible to give an answer but rather a good practicse.
In my opinion 15° could be feasibile, but have to be considered that high pressure condition (96 barg) and very very low thickness do not permit high margine on thinning or wrinkling. Waiting for your experience on this matter.