Supply Of Shielding Gas Mixture Of Argon 85% +/-1% & Co2 15% +/-1%. Each Cylinder Consisting Of 7 Cubic Metre, Gas Weight 12 Kgs +/-0.5 Kgs, Pressure 145 Kgs +/- 1 Kg Per Sq Cm, With Manufactures Test Certificate For Gas Composition. Make: Mspl/praxair/inox/southern Gas Or Similar..