@ sc17332
I am most certain that what you are seeing is in fact the manufacturer's welding procedure specification (WPS) number and not a spec number that you will find in a Code anywhere ("1-1-T1). This type of numbering is created solely by the manufacturer and is typical for companies that...
I was asked a question on where does it specify in a code or standard where the longitudinal seam weld in a section of pipe is to be positioned when fabricating a piping system where the axis of the piping system is in the horizontal plane. I remember being taught that it should be in the 9...