Tender For corrigendum : tender for supply of argon nitrogen hydrogen acetylen ammonia gas - argon gas in cylinders of capacity 7 cubic mtr , argon gas in cylinders of capacity 7 cubic mtr including repair of cylinder , nitrogengas in cylinders of capacity 7 cubic mtr , nitrogengas in cylinders of capacity 7 cubic mtr including repair of cylinder , hydrogen gas in cylinders of capacity 7 cubic mtr , hydrogen gas in cylinders of capacity 7 cubic mtr including repair of cylinder , dissolved acetylene in cylinders of capacity 7 cubic mtr , dissolved acetylene in cylinders of capacity 7 cubic mtr including repair of cylinder , anhydrous ammonia in cylinders of capacity 50 kg , anhydrous ammonia in cylinders of capacity 50 kg including repair of cylinder