NTWA 1.5m/ 2m/ 3m Thin Wall Drill Rod Pipe

NTWA As an upgraded reinforced variant of standard NTW thin-wall wireline drill rod within the DCDMA TW series and an optimal replacement for conventional NQ heavy-wall drill pipe, NTWA features optimized joint construction that retains lightweight property while boosting torsion resistance and deep-hole stability; produced from premium 4130/ZT950 Cr-Mo alloy seamless tubing with upset strengthened ends and integral quenching & tempering treatment, whose pin ends are case-hardened to HRC52~58 to realize anti-galling performance, reliable sealing and full DCDMA interchangeability with global core drilling tools, meanwhile being 11% lighter than solid NQ rods and equipped with enlarged inner bore to deliver outstanding mud circulation, perfectly suited for medium-small hydraulic core rigs used in mineral and geotechnical exploration.

1.Wireline core retrieval without full string tripping: Core fished by overshot via wireline, no need to pull out entire drill string, cutting tripping time over 40%.

2.Lightweight to reduce operating cost: 11% weight saving vs NQ solid rod, lowering rig torque, fuel consumption & field transportation cost.

3.Large inner bore for smooth mud flow: Enlarged ID ensures high mud flow rate, efficient cuttings removal & bit cooling in fractured & hard formations.

4.Reinforced joint for higher torsion resistance: Improved upset box-pin joint enhances bending & torsion capacity, outperforming standard NTW in deviated & mixed strata deep drilling.

5.Global universal compatibility: DCDMA certified threads fully interchangeable with all domestic & imported NTW/NQ drill tools and hydraulic core rigs.

Non-ferrous metal mineral exploration, coalfield prospecting, highway & railway geotechnical investigation, water conservancy engineering drilling, underground horizontal coring, tailing geological survey, small-medium geothermal well drilling.

Q1: Conventional NQ heavy drill rod is overweight, causing high rig load & tough mountain transportation?
A: NTWA is 11% lighter than NQ solid rod, reducing rig torque, fuel cost and field handling workload.

Q2: Traditional coring requires full drill string pulling out leading to low efficiency?
A: Compatible with full wireline assembly, core retrieved by wireline without tripping entire string to save non-drilling hours.

Q3: Small ID of solid rod leads to poor mud circulation & frequent stuck pipe in broken rock?
A: Large inner bore improves mud flow & cuttings discharge, effectively avoiding bit balling & stuck drill string.

Q4: Standard NTW is prone to thread breakage in deep & deviated boreholes with high loss cost?
A: Reinforced upset joint plus case-hardened threads upgrades torsion & bending strength to extend service life.

Q5: Import core tools hardly match domestic drill rods?
A: Manufactured per DCDMA standard for full interchangeability with all global NTW/NQ wireline tools.