supply of supply of supply of compressed oxygen gas , supply of compressed oxygen gas is:309-1965 in firms returnable cylinders. conditions (1) m aterial being required is piecemeal quantities as and when gas cutting works are one. (2) material should b e delivered is piecemeal as and when required by consignee in firms returnable cylinder. (3) free delivery o f compressed oxygen gas full/load cylinders and take back the empty compressed oxygen gas cylinders by the firm itself including their own transportation, labours, cylinders, etc. [ warranty period: 30 months aft er the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]