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Drill Collar Of Hardness 285 341 - China

price: contact company for price

Drill collar is made of AISI 4145 h steel, which the special

steel of each chemical element control is quite tight, after

a medium frequency induction heating quenching and

tempering, from 1 "below the surface of tube body can ensure

the brinell hardness of 285-341 - hb. Charpy impact energy

reaches more than 54 j.

Mechanical properties of Drill collar :

Outside diameter:

yield strength Tensile Strength The minimum elongation

Minimum brinell hardness AKVJ

(mm) Mpa min Mpa min

%min HBW

79.4~174.6 758 955


177.8`279.4 689 931

Company Contact:

  • Phone: 03916080816

  • Address: Jiyuan City Henan Province of China Mainland, Jiyuan , China

  • Email: Email

Published date: April 27, 2013 -

  • Business Description: JIYUAN CITY HUAZHONG METALLURGICAL MACHINERY CO.LTD is located in Jiyuan

    City Henan Province of China Mainland, created in 2006 with the

    registered capital RMB 5 million. Nowdays it has grown as a middle

    export enterprise which operates metallurgical spare parts, machining,

    steel products and forging so on.

    We have heat treating and machining workshops with the variety of equipments. Such as,box type resistance furnace, pit type resistance furnace, the domestic advanced double medium frequency quenching machine handling the maximal workpiece diameter of 600 mm, the maximal workpiece length of 5000 mm in heat treating workshops . In mechanical processing workshop with strong mechanical processing capacity, there are a variety of large and medium and heavy duty lathe, deep hole drilling and boring machine, CNC gantry milling machine, horizontal boring machine, grinding machine, sawing machine and a series of heavy machinery processing equipment. There are many senior technicians , experienced technical personnel and management personnel.

    The products we could manufacture include forged steel roller, leveling rolls, corrugated roller and pipe mould so on as per the customer s specific requirements.

    Our aim is to use our service and sincere exchange for your trust and supports, Quality and credibility are the most basic concepts to build our brand and create mutual benefit and win win situation.

    We are willing to sincerely cooperate with all the colleagues home and abroad in order to create a better future.

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