• Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling
  • Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling
  • Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling
  • Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling
  • Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling
  • Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling

Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling

Certification: ISO
Surface Treatment: Spray-Paint
Manufacturing Process: Forging
Material: Alloy Steel
Delivery: 20-30days
Color: on Request
Customization:

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Basic Info.

Model NO.
R25 R28 R32 R38 T38 T45 T51 ST58 ST68 GT60
MOQ
10PCS
After-Sale Service
Yes
OEM/ODM
Yes
Transport Package
Plywood Box
Trademark
SANSUNG
Origin
China
HS Code
72288000
Production Capacity
100000 PCS/Year

Product Description

Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling
Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling

Sansung rock drilling extension rod are made with high quality of alloy steel bar and tungsten carbides with superior wear resistance and impact toughness superior, through heat treatment so that it can withstand the toughest rock drilling demands, and transmit intensive impact energy into the rock with the least possible loss of energy. They are widely used in all kinds of mining, drilling, quarrying, engineering, construction, water well drilling, oil exploring industries etc.

 

Extension rod:

Other names are Extension drill steel, Extension drill rod, and Extension steel, M/Frod (Speed rod), produce Hexagonal and round cross-sections,Hexagonal rods are more rigid, heavier and transfer energy more efficiently,while increasing flushing. Round rods are generally lighter than hexagonal rodsand are normally used in extension drilling applications. With the longer steel tending to be larger in diameter, conventional extension steel is characterizedby duplicate thread on each end of the steel.
Extension rods are made by hollow drill steels, different lengths are available from 600mm to 6400mm. This hollow hole are usually named flushing hole, used for transmitting water or air during drilling. And the threads can be used for connecting couplings, shanks adapters or bits.

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.

Carburizationis a process used to harder the entire rod surface both internally and externally to strengthen and extend the life of the rod.

High frequency induction is process where only the thread ends of the rod are hardened to lengthen thread life.


R32 thread:
Extension rods, R32-Round32-R32, length915mm/1000mm/1220mm/1830mm/2435mm/3050mm/3660mm
M/F rods, R32-Round32-R32, length 915mm/1220mm/1525mm/1830mm/2435mm/3050mm/3660mm
Guide speed rods, R32-Round39-R32, length 3050mm/3660mm
Guide tube, R32-Round46-R32, length 1220mm/1525mm/1830mm/3050mm


T38 thread:
Extension rods, T38-Round39-T38, length1220mm/1525mm/1830mm/2435mm/3050mm/3660mm/3965mm/4270mm/4880mm/5530mm/6095mm
Double thread extension rods, T38-Round39-T38, length 3050mm/3660mm
MF rods, T38-Round39-T38, length915mm/1220mm/1525mm/1830mm/3050mm/3660mm/4270mm/4880mm/5530mm/6095mm
Guide speed rods, T38-Round46-T38, length 1830mm/3050mm/3660mm/4270mm/4880mm/5530mm/6095mm
Guide tube, T38-Round56-T38, length 1220mm/1525mm/1830mm/3050mm/3660mm/4920mm
Hex extension rods, T38-Hex32-T38, length 1220mm/1830mm/2435mm/3050mm/3660mm


T45 thread:
Extension rods, T45-Round46-T45, length 1830mm/2435mm/3050mm/3660mm/4270mm/5530mm/6095mm
MF rods, T45-Round46-T45, length1525mm/1830mm/3050mm/3660mm/4270mm/5530mm/6095mm
Guide speed rods, T45-Round52-T45, length 3050mm/3660mm/4270mm/5530mm/6095mm
Guide tube: T45-Round64-T45, length 1220mm/1525mm/1830mm/3050mm/3660mm
Guide tube: T45-Round76-T45, length 1830mm/3660mm


T51 thread:
Extension rods, T51-Round52-T51, length3050mm/3660mm/4270mm/4880mm/5530mm/6095mm
MF rods, T51-Round52-T51, length1525mm/1830mm/3050mm/3660mm/4270mm/4880mm/5530mm/6095mm
Guide rods, T51-Round76-T51, length 1830mm/3660mm
Guide tube, T51-Round87-T51, length 3660mm


T60 thread:
MF rods, T60-Round60-T60, length 3660mm/4265mm/6095mm

Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling
R25 (1")

MM HEX Extension rod
Rod section 24.8mm
 
Length (mm) Part No. Fully carburized. Part No. Surface hardened Weight approx (kg)
1220
3050
202-0212-C,02
202-0231-C,02
  3.7
10.1

MM HEX Extension rod
Rod section 28.5mm
 
Length (mm) Part No. Fully carburized. Part No. Surface hardened Weight approx (kg)
915
1000
1220
1525
1830
2435
3050
202-0309-C,02
202-0310-C,02
202-0312-C,02
202-0315-C,02
202-0318-C,02
202-0324-C,02
202-0331-C,02






202-0331-SH,03
3.3
3.9
4.5
5.7
6.9
9.2
11.9

MF HEX Speedrod
Rod section 28.5mm
 
Length (mm) Part No. Fully carburized. Part No. Surface hardened Weight approx (kg)
610
1220
202-0306-MF-C,02
202-0312-MF-C,02
  2.6
5.0

R28 (11/8")

MM HEX Extension rod
Rod section 32mm
 
Length (mm) Part No. Weight approx (kg)
3050 207-0431-C,02 15.0

MF HEX Speedrod
Rod section 32mm
 
Length (mm) Part No. Weight approx (kg)
3050 207-0431-MF-C,02 15,7

R32 (11/4")

MM Round Extension rod
 
Length (mm) Part No. Fully carburized. Part No. Surface hardened Weight approx (kg)
915
1000
1220
1830
2435
3050
3660
203-2509-C,02
203-2510-C,02
203-2512-C,02
203-2518-C,02
203-2524-C,02
203-2531-C,02
203-2537-C,02




203-2524-SH,03
203-2531-SH,03
203-2537-SH,03
4.8
5.7
6.5
9.8
13.2
16.6
20.0

MF Round Extension Rod
 
Length (mm) Part No. Fully carburized. Part No. Surface hardened Weight approx (kg)
915
1220
1525
1830
2435
3050
3660
203-2509-MF-C,02
203-2512-MF-C,02
203-2515-MF-C,02
203-2518-MF-C,02
203-2524-MF-C,02
203-2531-MF-C,02
203-2537-MF-C,02
  5.5
7.3
9.0
10.6
14.0
17.1
20.7

MF Round Speedrod
 
Length (mm) Part No. Fully carburized. Part No. Surface hardened Weight approx (kg)
1830
3050
203-2518-MF-90-C,02
203-2531-MF-90-C,02
  11.5
19.3

MM Round Drifter rod
 
Length (mm) Part No. Weight approx (kg)
4000
4310
203-2540-03-C,02
203-2543-03-C,02
22.0
24.8

MF Round Guide rod
 
Length (mm) Part No. Weight approx (kg)
3050
3660
203-4731-MF-C,02
203-4737-MF-C,02
27.0
32.0

R/T38 (11/2")

MM Hex Extension rod
Rod section 35.8mm
 
Length (mm) Part No. R38 thread Part No. T38 thread Weight approx (kg)
1220
3050
  235-0512-C.02
235-0531-C.02
8.4
18.7

MF Round Speedrod
 
Length (mm) Part No. R38 thread Part No. T38 thread Weight approx (kg)
915
1220
1525
1830
3050
3660
4270
4880
5530
  235-4709-MF-C.02
235-4712-MF-C,02
235-4715-MF-C,02
235-4718-MF-C,02
235-4731-MF-C,02
235-4737-MF-C,02
235-4743-MF-C,02
235-4749-MF-C,02
235-4755-MF-C,02
8.3
10.9
13.3
15.8
25.5
30.5
35.4
41.9
46.9

MM Round Speedrod

Surface hardened.
Length (mm) Part No. R38 thread Part No. T38 thread Weight approx (kg)
1830
2435
3050
3660
3965
4270
204-2718-SH,03
204-2724-SH,03
204-2731-SH,03
204-2737-SH,03


 


235-2731-SH,03
235-2737-SH,03
235-2740-SH,03
235-2743-SH,03
14.8
19.5
24.3
30.0
32.5
33.9

Fully carburized.
Length (mm) Part No. R38 thread Part No. T38 thread Weight approx (kg)
280
1220
1525
1830
3050
204-2702-C.02



 

235-2712-C,02
235-2715-C,02
235-2718-C,02
235-2731-C,02
2.0
10.0
12.5
14.4
24.0

MM Round Double Thread Extension Rod
 
Length (mm) Part No. R38 thread Part No. T38 thread Weight approx (kg)
3050
3660
  235-2731-95-SH,03
235-2737-95-SH,03
23.8
30.0

Drifter rod
For one rod drilling drifter rods can be used.

MF Guide Speedrod
 
Length (mm) Part No. T38 thread Weight approx (kg)
1830
3050
3660
235-4918-MF-C,02
235-4931-MF-C,02
235-4937-MF-C,02
21.1
34.5
41.3

Guide tube
 
Hole diameter (mm) Tube diameter (mm) Length(mm) Part No. Weight approx (kg)
64
64
64
64
64
64
76
56
56
56
56
56
56
64
1220
1525
1830
3050
3660
4920
3660
235-7012,10
235-7015,10
235-7018,10
235-7031,10
235-7037,10
235-7049,10
235-6937,10
12.6
14.0
17.4
28.3
32.8
47.9
51.0

T45 (13/4")

MM Hex Extension rod
Rod section 42.6mm
 
Length (mm) Part No. Fully carburized. Part No. Surface hardened Weight approx (kg)
3050
3660
236-0731-C,02
236-0737-C,02
  25.6
30.8

MM Round Extension Rod
 
Length (mm) Part No. Fully carburized. Part No. Surface hardened Weight approx (kg)
3050
3660
4270
6095
  236-2931-SH,03
236-2937-SH,03
236-2943-SH,03
236-2961-SH,03
33.3
39.9
46.7
68.9

MF Round Speedrod
 
Length (mm) Part No. Fully carburized. Part No. Surface hardened Weight approx (kg)
1525
1830
3050
3660
4270
6095
236-4915-MF-C,02
236-4918-MF-C,02
236-4931-MF-C,02
236-4937-MF-C,02
236-4943-MF-C,02
236-4961-MF-C,02
  18.2
21.5
34.7
41.6
49.0
69.0

MF Guide rod
 
Length (mm) Part No. Weight approx (kg)
3660 236-5137-MF-C,02 55.0

Guide tube
 
Hole diameter (mm) Tube diameter (mm) Length(mm) Part No. Weight approx (kg)
76
76
76
76
89
89
64
64
64
64
76
76
1220
1525
1830
3660
1830
3660
236-6912,10
236-6915,10
236-6918,10
236-6937,10
236-6618,10
236-6637,10
20.0
21.6
25.4
49.0
40.0
77.8

T51 (2")

MM Round Extension rod
 
Length (mm) Part No. Fully carburized. Part No. Surface hardened Weight approx (kg)
3660
6095
  237-3137-SH,03
237-3161-SH,03
52.3
84.0

MF Round Speedrod
 
Length (mm) Part No. Fully carburized. Part No. Surface hardened Weight approx (kg)
1830
3660
4270
6095
237-5118-MF-C,02
237-5137-MF-C,02
237-5143-MF-C,02
237-5161-MF-C,02
  27.5
51.8
64.0
85.6

Guide tube
 
Hole diameter (mm) Tube diameter (mm) Length(mm) Part No. Weight approx (kg)
89
89
102
76
76
87
1830
3660
3660
237-6618,10
237-6637,10
237-6837,10*
40.0
79.1
80.0

Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling
Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling
Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling
Top Hammer Thread Extension Rods for Open Mining and Underground Tunneling Drilling

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