Note#113

Minimum corrosion allowance for stainless steels is 0.8 mm
Minimum corrosion allowance of 1.5 mm shall be provided for carbon steel material
Design-Engineering-Construction-Testing & Commissioning of piping
Minimum corrosion allowance for stainless steels is 0.8 mm
Minimum corrosion allowance of 1.5 mm shall be provided for carbon steel material