Send Message

Wireline core drilling DCDMA standard Drill Rod BQ NQ HQ PQ for mining industry

50 meters
Wireline core drilling DCDMA standard Drill Rod BQ NQ HQ PQ for mining industry
Features Gallery Product Description Request A Quote
High Light:

DCDMA standard Drill Rod


DCDMA wireline drill rods


HQ Drill Rod

Basic Infomation
Place of Origin: Germany
Brand Name: ROSCHEN
Certification: ISO, API
Model Number: AQ, BQ, NQ, HQ, PQ/ BQ3, NQ2, NQ3, NQTT, HQ3, HQTT, PQ3, PQTT, T2 46, T2 56, T2 66, T2 76, T2 86, T2 101, T6 86, T6 101, T6 116, T6 131
Payment & Shipping Terms
Packaging Details: steel packing
Supply Ability: 50000 pcs
Product Description

Wireline core drilling DCDMA standard Drill Rod BQ NQ HQ PQ for mining industry

Tapered threads DCDMA Drill Extension Rod BQ NQ HQ PQ for mining industry



1. High Quality Alloy Tube 
2. Through Wall heat treated tube body 
3. Consistent concentricity, straightness 
4. DCDMA Standard thread
Raw Materials:   

ROSCHEN choose the best steel tubes in the market to manufacture our drill rods and pipes. Spot check will be conducted after the steel tubes delivered to company. We will make sure the compositions and specifications match the inspection report form the suppliers.

Based on the depth of drill bore, Q series wireline core drill rods are classified into A and B grades. A grade drill rod is entire-length or ends thermal processed and B grade drill rod is entire-length processed.

Material: 30CrMnSiA or 45MnMoB (A grade), XJY850, BG850(B grade), RS950, Eruopean/US Standard 40/41

Wireline Drill Rods Materials Standards(DCDMA standard)
Grade Performance Material Heat Treatment
A Standard 30 CrMnSiA, 45MnMoB, 40/41 Entire-length, ends thermal processed, Thread Nickel Coating
B Premium XJY850, BG850, RS950 Entire-length


Heat treatment control:  


Heat treatment will greatly improve the material strength and increase the thread wear life of the rods and casings. We conduct either tru-wall or both ends heat treatment to the tube body. After heat treatment, strength, hardness, straightness and concentricity of the treated tubes will be tested in our lab.
Thread opening process:  


Accuracy of threads will determine the use effects and life time of drill rod and casings. 
CNC latches and form cutter are used in thread opening processing to minimize error made by anthropic factors.
Additional thread treatment:


Surface of the threads will be cleaned to remove burr adhered after threads are opened.
Afterwards, the tread surface will be phosphated to improve surface conditions.

Wireline core drill rod  technical parameters:

DCDMA Drill Rods Tapered threads Wireline Drill Rod BQ NQ HQ PQ for mining industry


Standard Specification Body Size Length(M) Thickness of The End Bit   Standard
B BQA  BQB Ø55.6*4.8 3 / BQ
BRQ Ø55.6*4.8 3 / BQ
BQT Ø56.5*4.75/6 3 Internal Thicken BQ
BQS Ø54*4.5/6.25 3 Inside & Outside Thicken BQS
N NQA NQB Ø71*5.5(Ø70.1*5.05) 3 / NQ
NRQ Ø71*5.5(Ø70.1*5.05) 3 / NQ
NQT Ø72*4.8/6 3 Internal Thicken NQ+1
NQS Ø73*5/7.5 3 Internal Thicken NQ+1.5
H HQR HQB Ø89*5.6 3 / HQ
HRQ Ø89*5.6 3 / HQ
HQT Ø91*5.8/6.75 3 Internal Thicken HQ+1
HQS Ø91*5.8/7.5 3 Inside & Outside Thicken HQ+1
P PQA PQB Ø114.3*6.35 3 / PQ
PRQ Ø114.3*6.35 3 / PQ

ROSCHEN can supply the following products:
1) Drill rod: BQ, NQ, HQ, PQ
    Casing tube: BW, NW, HW, PW, HWT, PWT
2) Bit: impregnated diamond bits, tri-tube core barrel, PDC diamond bit
3) Reaming shell: BQ NQ HQ PQ series
4) Core barrel: BQ, NQ, HQ, PQ head assembly and parts and overshot assembly
5) Drill tool: lifting tool, wrench, adapter sub, hoisting plug, water swivel, overshot, outer tube & inner tube wrench,  foot clamp, recovery tap, etc.

Recommended Products
Get in touch with us
Contact Person : Bill, George, Michael
Tel : 13764195009
Fax : 86-021-54380177
Characters Remaining(20/3000)