Rolled bar for Flange A350 LF2 Rolled bar for Flange A350 LF2 ElCidCampeador (Mechanical) (OP) 11 Dec 17 10:17 Hi, May I use a rolled bar (which is acc. to 350 LF2) to make a standard flange (e.g. B16.5) and declare it as 350 LF2? The raw material is not a "real" forging...thanks RE: Rolled bar for Flange A350 LF2 SJones (Petroleum) 11 Dec 17 11:06 SA-350 is reasonably clear in the exception applied to permission for machining from bar, for "flanges of all types." Steve Jones Corrosion Management Consultant http://www.linkedin.com/pub/8/83b/b04 All answers are personal opinions only and are in no way connected with any employer. RE: Rolled bar for Flange A350 LF2 ElCidCampeador (Mechanical) (OP) 11 Dec 17 14:00 Do you mean SA 350 Par.5.3.3? Does it mean that I could do it? RE: Rolled bar for Flange A350 LF2 metengr (Materials) 11 Dec 17 15:29 5.3.3 Except for flanges of all types, hollow, cylindrically- shaped parts may be machined from rolled bar or seamless tubular materials provided that the axial length of the part is approximately parallel to the metal flow lines of the stock. Other parts, excluding flanges of all types, may be machined from hot-rolled or forged bar up through and including NPS 4. Elbows, return bends, tees, and header tees shall not be machined directly from bar stock. ... means that for hollow cylindrical shapes other than flanges of all types, you could use bar or tubular product forms, etc. RE: Rolled bar for Flange A350 LF2 ElCidCampeador (Mechanical) (OP) 12 Dec 17 10:57 And if I took a rolled bar, I stamped/forged it to the dimensions that I want (before the final machining) and carried out mechanical/chemical test to it?