Tender For providing of custom bid for services - lumpsum rates for 2 years towards contract for service for calibration and maintenance of psv or tsv at gail pata refer appendix a for details,custom bid for services - lumpsum charges for part b providing services for certification of valves under smpv rules for all sizes for total 280 ea including all charges and gst,custom bid for services - lumpsum charges for part b providing services for deployment of helper unskilled for 8 hours per day basis for shutdown duration for total 800 mad including all charges and gst,custom bid for services - lumpsum charges for part b providing services for helper unskilled for 1 hour of extra work or overtime work beyond 8 hours per day for 3200 mah including all charges and gst,custom bid for services - lumpsum charges for part b deployment of rigger or fitter semiskilled for 8 hours per day basis for shutdown duration for 800 mad including all charges and gst,custom bid for services - lumpsum charges for part b for deployment of riggerfitte