DCDMA Standard Drill Rods 50 60 70mm Drill Bit For Conventional Core Barrel Drilling

DCDMA Standard Drill Rods 50 60 70mm Drill Bit For Conventional Core Barrel Drilling​

DCDMA Standard Ø55.6*4.8 Drill Bit Extension Bar

Drill Bit Extension Bar 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

Drill Bit Extension Bar Specifications:

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

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

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.

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ROSCHEN GROUP

ROSCHEN Group has the world class advanced equipment like 12000 tons forging, metal processing plant, heat treatment workshop, numerical control plant, Advanced five-axis machining center, etc. professional technical and skilled team to ensure mining, mineral tools, equipment products quality stable and reliable.

ROSCHEN Group Limited is a manufactory with years of research and development for the mining, mineral tools, equipment. We are capability to produce high performance world class products and control excellent quality. Our main product includes tricone bit, diamond core bits, drill pipe, core barrel, TCI tricone bit, mill tooth tricone bit, RC hammer, DTH bit, etc.

ROSCHEN Manufactory PROCESS

ROSCHEN Sales Value Growing Up!

ROSCHEN'S MISSION

1. Strive to create and supply Best quality products for the industry that last longer than the average products.

2. Provide excellent service for our clients. 24 hour-7 days /week schedule to get our clients what they need – FAST.