SHIELDING GASES DESIGNATION
CLASSIFICATION SYSTEM FOR SINGLE GAS
SG – B
(1.) Shielding gas designator (2.) Base gas designator
CLASSIFICATION SYSTEM FOR MIXTURE OF GASES
SG – BX – %
(1.) Shielding gas designator (2.) Base gas designator (3.) Component
CLASSIFICATION SYSTEM FOR SINGLE GAS
Carbon dioxide (Co2) : SG – C
Argon : SG – A
CLASSIFICATION SYSTEM FOR MIXTURE OF GASES
Argon – Co2 Mixture[75+25] : SG-AC-25
