Non-magnetic Drilling tools include Non-mag Stabilizer, Drill Collar and other type special designed stem tools.
The raw material we are using is from China Bao Steel, which is the largest steel manufacturing company in China, makes the first hand quality assurance.
The as cold rolled finish on both ID and OD surface with unique technical process strengthen the structure and ensures the tools with optimal resistance to stress, corrosion, cracking and the mechanical performance is greatly enhanced.
The whole process is strictly according to API 7 and NS-1 Specification, Ultrasonic test through the whole length of the body, to avoid any inner crack or fault, full set of inspections on material, dimensions carried out after the completion.
The delivered products from us will be most reliable quality in China.
The following parameters are the key points for Non-magnetic materials.
|
OD Range |
Yield Strength (Mpa) |
Tensile Strength (Mpa) |
Elongation (%) |
Hardness £¨HB£© |
Impact Test (J) |
|
3 1/8¡±-6 3/4¡± |
¨R758 |
¨R827 |
¨R25 |
¨R285 |
¨R54 |
|
7¡±-11¡± |
¨R689 |
¨R758 |
¨R25 |
¨R285 |
¨R68 |
1. The magnetic field gradient is 0.05¦ÌT Max(Arbitrally100mm distance not exceeding 0.05¦ÌT
2. Relative Magnetic Permeability:1.010Max
