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  • Non Magnetic Drill Collars - China

    price: contact company for price

    It is made from high-class low carbon stainless steel, and completely

    meets the requirement of API Spec 7-1 and SY/T5144 Standard. It has good

    low magnetic permeability, high mechanical property and perfect enduring

    intergranular corrosion cracking performance. It is mainly used for the

    inspection in the process of petroleum drilling, and the structure is

    the same with the ordinary drill collar.

    Magnetic permeability(MPS=1×105/4∏A/m)

    1. Average: Ur<1.010

    2. Magnetic Field Gradient: ΔB≤0.05μT


    1) Good quality and competive price

    2) Certified by API

    3) Use for well drilling

    4) Delivery on time

    5) Size according to your request

    6) Drill collar, stick drill collar, non-magnetic drill collar, spiral drill collar covering all size.


    1) standard:AISI 4145H and API Spec.7

    2) Code:NCXX, IIF, REG

    3) O.D:4 3/4 -11inch

    4) I.D:2-3 inch

    5) Lenghth:9150mm, 9450mm

    Company Contact:

    • Phone: 08603514388799

    • Address: No.3,South Industrial Zone Of Nanshahe, Songzhuang, Taiyuan, China

    • Email: Email

    Published date: July 20, 2013 -

    • Business Description: Shanxi Weigao Petroleum Drilling Tools Co., Ltd, a private high tech

      enterprise integrating scientific research, production and marketing,

      with years of history in the production of petroleum drilling collars,

      square kellys, and other products, produces series of petroleum drilling

      machineries and no excavation drills professionally.

      We have many kinds of high precision manufacturing and inspection equipment: special numerical control pipe thread lathes, large cylindrical lathes, milling machine, deep hole boring machine, friction welding machine, medium frequency heat treatment production line, as well as variety of thread gauge, single measuring instruments, thickness gauges, hardness testers, ultrasonic flaw detectors, ballistic work testing machines, universal hydraulic testing machines with microcomputer display and so on.

      With sophisticated production equipment, strict inspecting method and strong technology strength, we have mastered the key technique in producing petroleum drilling tools, whole process of production meet the requirement of API standard. Our company has already won the Certification of Quality System ISO9001:2000 and has obtained the product logo licenses of API SPEC7 1 (Certificate No.7 1 0625) and API Q1 (Certificate No.0571), which are issued by American Petroleum Institute.

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