Tender For bid to ras corrigendum : supply of gas acetylene dissolved note: gas cylinder to be painted at ground with maroon colour as per specn. i , nitrogen gas having purity of 99.5% with grade n2.5 to specification is: -1747-2023 along with nitrog , gas oxygen. note: gas cylinder to be painted at ground with black colour as per specn. is: 4379-1981(g