Wireline Heat Treatment HWT / Q Series Geological Core Drilling Rod
and Casing Tubes
Description:
ROSCHEN wireline drill rods are all manufactured by CNC machines
under DCDMA standard. They're made of high quality alloy steel with
heat-treated. We also can produce various sizes of casing tubes.
Drill pipes will be manufactured from seamless steel tube by cold
drawn.
The material is XJY850 / 30CrMnSiA / 40 - 41 which is one of the
best material for geological drilling in world.
Coring rods are crafted from quality heat treated materials
ensuring superior wear resistance, strength, and toughness in the
most demanding applications.
Rods and casing are manufactured under stringent industry
standards, and are field tested under a variety of conditions.
All drilling rods are designed to be compatible with other rods
manufactured to DCDMA standards.
Specifications:
1. High quality alloy tube
2. Thru-wall heat treated tube body
3. Consistent concentricity, straightness
4. Tapered threads
Raw materials:
ROSCHEN only choose the best steel tubes in the market to
manufacture our 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.
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.
Specification:
| Steel grade: 30CrMnSiA NQ Drilling Rod |
| Rod Size:(mm) | 70.1*5*3050 |
| Rod OD/ID (mm ) | 69.9/60.3 |
| Rod length (m) | 1.5 or 3 |
| Rod thickness | 5.5 |
| Rod Weight (kg/m) | 8.8 |
| Thread length (mm) | 42 |
| Thread pitch (thread/inch) | 3 |
| Box thread tooth height | 0.76 |
| Pin thread tooth height | 0.88 |
| Thread tooth angle (°) | 29° |
| Tensile Strength (Mpa) | 960 |
| Yield Strength (Mpa) | 840 |
| Elongation(%) | 18 |
| Hardness (HRC) | 30/30 |
| Material | 30 CrMnSiA |
| Heat treatment | Entire-length or ends thermal processed |
| Maximum core depth (m) | 1500 |
Packing
Concerning the packing, it is packaged by iron belts.
BQ Bundled Specifications (Steel Belt):
3.0m/10ft BQ Drill Rod (37 Pieces)
Dimensions (L×W×H): 3.0×0.4×0.4
Volume: 0.5 m3
Gross Weight: 670 kg
BQ Bundled Specifications (Iron Frame):
3.0m/10ft BQ Drill Rod (30 Pieces)
Dimensions (L×W×H): 3.0×0.35×0.3
Volume: 0.32 m3
Gross Weight: 550 kg
NQ Bundled Specifications (Steel Belt):
3.0m/10ft NQ Drill Rod (37 Pieces)
Dimensions (L×W×H): 3.0×0.5×0.5
Volume: 0.75 m3
Gross Weight: 900 kg
NQ Bundled Specifications (Iron Frame):
3.0m/10ft NQ Drill Rod (25 Pieces)
Dimensions (L×W×H): 3.0×0.38×0.39
Volume: 0.43 m3
Gross Weight: 610 kg
HQ Bundled Specifications (Steel Belt):
3.0m/10ft HQ Drill Rod (37 Pieces)
Dimensions (L×W×H): 3.0×0.625×0.625
Volume: 1.2 m3
Gross Weight: 1300 kg
HQ Bundled Specifications (Iron Frame):
3.0m/10ft HQ Drill Rod (25 Pieces)
Dimensions (L×W×H): 3.0×0.46×0.47
Volume: 0.65m3
Gross Weight: 890 kg
