bids are invited for drilling accessories mse bq core lifter , bq core lifter case , nq core lifter , nq core lifter case , hq core lifter , hq core lifter case , bq guide and locking coupling , nq guide and locking coupling , hq guide and locking coupling , bq overshot latches with spring , nq overshot latches with spring , bq innertube latches with spring , nq innertube latches with spring , wash pipe for water swivel kores , wash pipe careleous type , water swivel packing kores , waterswivel packing 81 mm , nq landing ring , bq landing ring , hq landing ring , nq cb shutoff valve , bq cb shutoff valve , hq cb shutoff valve , thrust bearing t4 , thrust bearing t6 , thrust bearing t8 , thrust bearing t10 , thrust ball bearing 51115 , ball bearing 6309 , ball bearing 6205 , ball bearing 6213 , lapeta pipe , tarpaulin heavy duty , pp bag assorted size , boundary marking safety tape , gi wire total quantity : 2930