MAXDRILL Drifting and Extension drill Rod
different lengths of drifting drill rod are available from 600mm to 6400mm usually. ISO9001:2008 certificated.
—MAXDRILL Drifting Drill Rod/ Extension Rod
Produce Hexagonal and round cross sections, Hexagon rods are more rigid, heavier and transfer energy more efficiently, while increasing flushing. Round rods are generally lighter than hexagonal rods and are normally used in extension drilling applications. With the longer steel tending to be larger in diameter, conventional extension steel is characterized by a duplicate thread on each end of the steel. ,
Male/Female (M/F) rod, speed rod
M/F drill steel is an alternative to couplings sleeves to include the female part of the threaded connection as an integral part of the drill steel. M/F drill steel provides more rigid connections and is easier to uncouple and handle. The service life also tends to be better than with separate couplings. The advantages of drilling with M/F steel include: easy handling, quicker uncoupling, tighter connections, the potential to drill straighter holes, and longer service life.
For Extension Rod and M/F steel process, the below two different types of heat treatment are used to strengthen high speed and powerful percussive drill string components to maximize their performance and reliability. Longer steel larger in diameter, conventional extension steel, Hexagonal and round cross sections are available.
- Carburization is a process used to harden the entire rod surface both internally and externally to strengthen and extend the life of the rod.
- High Frequency Induction is a process where only the thread ends of the rod are hardened to lengthen thread life.
Extension rod size
R32-Round32-R32 length 3 4 6 8 10 12 ft
T38 (R38) –Round39-T38 (38), length 4’ 6’ 10’ 12’ft
T45 -Round46-T45, length 10’ 12’ 14’ 20’ ft
T51 -Round52-T51, length 12’ 14’ 20’ ft
MF rod /speed rod size
MF-rod R32-Round32-R32, length 3 4 5 6 10 12 14 ft
MF Rod T38-Round39-T38, length 4 5 6 10 12 14 ft
MF Rod T45-Round46-T45, length 5 6 10 12 14 20 ft
MF Rod T51-Round52-T51, length 6 12 14 20 ft
MF Rod ST58-Round60-ST58, length 12 14 20 ft
(1)Steel grade: 20CrNi3Mo equivalent to SANDBAR 64
SIZE: hex.22mm .hex.25mm, hex.28mm. hex.32mm hex.35mm
Dia.32mm. dia.38mm, dia.45mm dia.51 mm
(2) Thread: R22, R25, R28, R32, R38, T38, T45, T51, ST58, T60
(3)Length: 0.4m-10m
(4)Package: in wooden case or in bundles.
(5)Productivity: 20000MT / month
Send product request
Other supplier products
 |
MAXDRILL Tapered drill steel | Tapered drill rod made with high quality steel,used for rock drilling, blasting holes and other drilling works MAXDRILL Tapered Drill Steel Taper... |
 |
MAXDRILL DTH hammer and DTH Bit | DTH hammer and bits are economy and powerful drilling capacity,it is advanced drilling tool for drilling and mining industries MAXDRILL Down The Ho... |
 |
MAXDRILL blast furnace tap hole drill rod and bit | MAXDRILL Tap hole Drill Rod It was widely used in big steel mill for delivering liquid steel specially from blast furnace.A blast furnace tap hole ... |
 |
MAXDRILL Thread Button Bit | MAXDRILL Thread Button Bit Thread button bits made with high quality of best quality alloy steel bar and tungsten carbides, through heat treatment... |
 |
MAXDRILL SDA Self Drilling Anchors | Rock Bolt Diameter: R25N, R32N/S, R38N, R51L/S, T30, T40, T76N/S. Useful for support of steep rock cuts where artificial resistance Self-drilling ... |
Same products
 |
About Grinding Steel Balls grinding medias | Seller: Shandong Jinchi heavy industry joint-stock Co., LTD | We are a professional factory producinggrinding mediasabout 25years since1995with ISO9001,OHSAS18... |
 |
About Grinding Steel Balls | Seller: Shandong Jinchi heavy industry joint-stock Co., LTD | DearManager: This isLeofromShandong Jinchiheavy industry joint-stockCo., LTD in China. We are a... |
 |
ROCK DRILLING TOOLS | Seller: HOPH TOOLS | HOPH TOOLS is a genuine rock drilling tools manufacturer with rich experience in all Top hammer,D... |
 |
LB Platform Hermetical Top Discharge Centrifuge | Seller: JIANGSU SAIDELI PHARMACEUTICAL MACHINERY CO.,LTD | LB PLATFORM HERMETICAL TOP DISCHARGE CENTRIFUGE The revolving speed of feeding, cleaning, and so... |
 |
Rotary Kiln Tyre steel casting | Seller: Chaoyang Runxing Heavy Machinery Manufacturing Co. ltd | rotary kiln application: cement, metallurgy, chemical industry, building etc. Customizable : yes ... |
