Drill Collar
Spiral drill collar with elevator groove and slip groove
High Quality API 7-1 NS-1 Non-Magnetic Drill Collar
API 5DP 4" NC40 heavy weight drill pipe HWDP
API 5DP drilling seamless S135 5 1/2FH 5 1/2" /5" drill pipe
API 5CT tubing pipe/ tubing pup joint 2.3/8" J55 EU 3.05 meter with coupling for Myanmar
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