minimum carbon in API 5L pipe steel
minimum carbon in API 5L pipe steel
(OP)
A pipe mill is proposing a minimum level of 0.04% carbon for API 5L X65 steel. This is for subsea pipe that will be operating around (+) 40 deg. F, subjected to near 0.25% strain levels during installation. Anyone have an opinion on if this is too low? The client specification stated a minimum of 0.07%.





RE: minimum carbon in API 5L pipe steel
RE: minimum carbon in API 5L pipe steel
The mill wants to shoot for 0.05 to 0.06C. The 0.07min means actual would be 0.08-0.09 which is quite high for TMCP. The client thinks they can avoid the problem by specing 0.07min. And for an offshore laying job, it is a real concern.
If you have suppliers that meet all requirements, honor the clients requirements. If not or if big $$ difference, ask the pipe mill why they want the lower carbon and then see if the client will go for it.
RE: minimum carbon in API 5L pipe steel
RE: minimum carbon in API 5L pipe steel
RE: minimum carbon in API 5L pipe steel