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.
M/F extension rod is a kind of round or hexagonal threaded drill rod, one end is internal thread rod, and the other end is external thread. Some kind of threaded drill rod is often referred to as MF drill rod abroad. Due to its fast connecting drill rod with coupling sleeves, reducing the weight of the complete drilling tools, shortening the length of the threaded connection, reducing the thread joint impact energy loss, therefore, it's more convenient when loading and unloading, drilling speed & drilling efficiency are both increased greatly.
(1) Threaded Connection: R22, R25, R32, R38, T38, T45, T51, T60 and so on.
(2) Diameter: OD32, OD38, Hex32, Hex35, And so on.
(3) Length: 800-6000mm.
(4) Package: Ply-wooden cases or wrapped with plastic knitting and then packed into bundles or as per your requests.
Contact Name: David Zhang
Company Name: Liaocheng Jinquan Construction Machinery Co., Ltd
Street Address: Economic Development
Liaocheng, Shandong 252000
Member name: jqdrilling
Member Since: 30 May 2015
Total Leads: 78 jqdrilling Import Export Business Leads
Business focus: Tapered Button Bits, Drill Bits, Drill Rod, Integral Drill Steel, Tapered Drill Rod, Conical Bits, Cutter Bits, Bullet Teeth, Conical Cutter Bits, Pic
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Product Category: Continuous mining equipment