bids are invited for mangalore in karnataka depressurization and degassing , ultrasonic thick measurement , erect of scaffolding , internal surface sphere cleang , ultrasonic flaw detection , hardness test at random , retesting safety relief valve , radiography of sphere , wfmp testing , hydrotesting of lpg sphere , submission test certificates , sply and painting of spheres , ccoe approval-repairs. , defect rectification-grinding , defect rectification-welding , in-situ metallography , repair of fireproof coating testing of lpg spheres at hpcl lpg import facility at total quantity : 8508