We have different sizes of the non magnetic drill collar,the external diameter scope:80-300mm.
It possesses nice low magnetic permeability,high-strength mechanical property and excellent resistance to intergranular corrosion cracking performance.
The chemical composition should be controlled strictly during refining and forging process.
Non-magnetic drill collar are made of low carbon chrome manganese alloy steel,which has following characteristics:
It is used between the drill pipe and the bit in the drill stem.
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Usage: | drilling |
Technique: | forging |
Alloy Or Not: | Is Alloy |
Place of Origin: | Shandong China (Mainland) |
Outer Diameter: | 80-300mm |
Product Description Safety Clamps Type MPare necessary tools for handling drill collars, flush joint pipes and small shoulder pipes. They could adjust pipes of different sizes by changing the quantity of chain links. They are designed and manufactured according to 7k spec for ...
Come From Dongying Lake Petroleum Technology Co.,
We supplyslick drill collars,spiral drill collarsandnon-magnetic drill collars; their sizes are from 3-1/8 to 11 inches. Besides the drill collars in the table below, we can supply other drill collars at customers\' request. Materials: Trepanning and Heat Treatment: ...
There are different kinds of drill collars,including round drill collar,spiral drill collar,non-magnetic drill collar,square drill collar and so on.Ordinary drill collar is the circular cross section, the center has a water hole,the wall thickness is larger,the nozzle is ...