Portable Drilling Bao Steel BTW / NTW / HTW Thin Wall Drill Rod Wireline Drill Rods With Heat-Treated Ends
Size
O.D.(mm)
I.D.(mm)
Weight/3m (kg)
Weight/1.5m (kg)
BTW
56.3
48
15.65
7.83
NTW
73.3
64
22.91
11.46
HTW
91.3
81
30.75
15.38
Made from high-precision, stress-relieved seamless steel tubes
Wireline drill rods with heat-treated ends to strengthen threaded joints
Precision-machined, gauged and treated to mitigate galling
Raw materials:
We 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.
Our Services:
Provide the technical design and solutions;
Designing and manufacturing of non-standard equipment;
Professional technical training and guidance on site according to the contract;
Supply accessories at any time;
Tele-technical consulting and services;
Other special technical service according to client's requirements.
Quality Assrance:
Strict contract auditing invloved all departments to assure the feasibility of each order.
Process design and validation before bulk production.
Strictly control on all raw and auxiliary materials, All raw materials reach the world advanced level.
On-site inspection to all processes, inspection record keep traceable for 3 years.
