16'' sch 80 pipe /batering

[yergul]

16'' sch 80 TP 316/316L Stainles Steel pipe has been cutted 12 mm short an we do not have any additional material..So that i would like to make welding filling with the ER 316 L welding wire or suitable electrode from pipe end to provide at least 10 mm filling in order the get requested pipe dimension. As i know it is call as bathering..is there any part of ASME spec?
What is the allowlable limit this option?

 

[Carburize]

It's called "buttering" and the limit on thickness of the "butter" layer should be the maximum thickness of weld deposit qualified by the PQR. Typically 2 times the deposit thickness used in the procedure qualification.