tender for shielding gas (each cyl.consist-7cum, gas wt.12.3kg,press.-150kg/sq.cm asper drg.no. gas moxture of 82 argon+ 18 co2+ aas per en 439-m21, protection procedure -you cannot ente as per drg.no. gas moxture of 82 argon+ 18 co2+ aas per en 439-specn: gas moxture of 82 argon+ 18 co2+ aas per en 439-m21 .
