bids are invited for custom bid for services - handling of cylinder 14 point 2 and 19 and 2 and 5 kg , custom bid for services - pre inspection of cylinders , custom bid for services - punching of tare weight of cylinders , custom bid for services - carousal attendant , custom bid for services - check scale weight adjustment of filled cylinders , custom bid for services - gd and on line valve changing , custom bid for services - pt and o ring replacement , custom bid for services - caping job of cylinders , custom bid for services - observing body and neck leak at test bath , custom bid for services - sealing of cylinders , custom bid for services - sqc of filled cylinders and reliver , custom bid for services - filled cylinder storage and handling , custom bid for services - filling of 2 and 5 and 19 fp kg , custom bid for services - filling of 35 and 47 point 5 and 425 kg , custom bid for services - evacuation and purging of cylinders , custom bid for services - extra hours manpower unskilled total quantity :