Carbon Dioxide (Co2) As Shielding Gas For Metal Arc Welding (Gmaw) As Per Is:307/1996 (Reaffirmed 1996) Cylinder Capacity 31 Kgs. Each Purity 99.8 Percent Maximum Moisture Content 32 Ppm Special Condition Minimum Validity Period Of Supply Should Be 2 (Two) Years From The Date Of Issue Of Purchase Order. (Hsn Code 28112190)