ZJSB non-magnetic drill collar is made of low carbon chrome manganese alloy steel,possessing the following characteristics:
The material is made of smelting and forging after strict analyze for chemical composition.
It possesses nice low magnetic permeability.high-strength mechanical property and excellent resistance to inter granular corrosion cracking performance.
When the magnetic field strength is 1X105/πNm,relative permeability of non-magnetic drill collar＜1.010;
Magnetic strength of any phase distance of non-magnetic drill collar along internal hole＜0.05μT
Types of ZJSB Non-magnetic Products
Short Drill Collar
Heavy Weight Drill Collar
Whole Spiral Stabilizer
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