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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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