tender for procurement of gas acetylene - 500 nos , gas acetylene for gas welding & cuting, per cylinder - 6 cu.m. as per safety norms, it is mandatory to supply all the cylinders with their valve caps. conversion factor: per cyl 6 cu.m = 500 x 6 = 3000 cu.m , other charges if required , cylinders will be returned within 30 days from the date of receipt. from 01st day to 30th day rental free. , from 31st day rental , cylinder replacement cost: , replacement cost of valve , replacement cost of gland nut , replacement cost of spindle , charges for removing and replacing broken spindle , charges for clearing cylinders received with oil , painting , charges for totally damaged/ unusable /loss of cylinder