Plate marking as per SA-480

[yurachv]

Is it necessary to indicate the Heat# or Lot# on the plate (plate SA-240, AISI 316L) according to SA-480?

Actually i have following marking on plate: "AISI 316L 6x1500x6000".

As i understand, as per SA-480 'the name or mark of the manufacturer' shall be marked on plates. Is that mandatory requirement?

 

[EdStainless]

This is from an older version of A480