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  • Top Hammer Rock Tools Drill Rods Mf Rod Extension - China

    price: contact company for price

    Thread extension steel bars for rock drilling include extension rod, MF

    rod, light extension drill rod, drifter rod, shank adapter drill rod

    etc. We can also call such thread extension drill rod as threaded drill

    rod or threaded pipe, they own one end thread or both ends thread, with

    hollow round body or hollow hexagonal body. It is the main part of the

    threaded connection drilling tools or drilling equipments. Threaded

    drill rod is connected with top hammer rock drill rigs via shank

    adaptors & couplings, another end, they are connected with drill bits

    via thread also. Threaded rod could be connected with other drill rods

    to constitute a complete set of threaded connection whole drilling tools

    for drilling. Threaded drill rods could be connected with one piece of

    shank adapters and drill bits, or connected with lots of adaptors and

    bits. And ther can also be used in shallow holes and small diameter rock

    hole drilling, the applicable scope is wide, drilling speed, impact

    energy transmission loss is small, high drilling efficiency, easily to

    realize the drilling mechanization and improve the superiority of

    drilling conditions. Therefore, thread extension drill rods share a very

    very big proportion in the whole drilling fields.

    Thread extension steel bars for rock drilling must own high fatigue strength, elasticity, rigidity and toughness, but strength and toughness is contradictory. The thread at both ends of the thread rods is a whole set of drilling tools, it' s the key part of rod. It is well known that the performance of the material could be played well only after going through heat treatment to release its maximum potential, therefore, the choice of material and heat treatment process are important on an equal basis.

    R32, R38, T38, T45, T51, T60 Thread Extension Rod:

    ( 1) Threaded Connection: R22, R25, R32, R38, T38, T45, T51, and so on.

    ( 2) Diameter: OD32, OD38, HEX32, HEX35, And so on.

    ( 3) Length: 600- 6400mm.

    ( 4) Package: Wooden cases or wrapped with plastic knitting and then packed into bundles or as per your requests.


    Company Contact:


    • Phone: 866358206122

    • Address: Economic Development Zone, Liaocheng, China

    • Email: Email


    Published date: February 3, 2015 -

    • Business Description: Liaocheng Jinquan Construction Machinery Co.,Ltd was established in

      1984, It belongs to the group company of Golden Spring Drilling Limited.

      We are one of the biggest production bases of all kinds of rock drilling

      tools, mainly produce "Jinquan" brand rock tools, including threaded

      button bits, tapered button bits, cross drill bits, chisel bits, down

      the hole DTH bits, DTH hammers, extension drill rod, MF rod, shank

      adaptors, coupling sleeves, conical shank cutter bits, pick holders,

      tricone bits, air compressor, drilling rigs etc.

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