China R32 T38 T45 T51 Round Hex Speed Bench Drill mm Mf Extension Rod

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.

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

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

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

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

MF rods, T60-Round60-T60, length 3660mm/4265mm/6095mm
R25 (1")MM HEX Extension rod
Rod section 24.8mm

Length (mm)Part No. Fully carburized.Part No. Surface hardenedWeight approx (kg)1220
3050202-0212-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 hardenedWeight approx (kg)915
1000
1220
1525
1830
2435
3050202-0309-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,02202-0331-SH,033.3
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 hardenedWeight approx (kg)610
1220202-0306-MF-C,02
202-0312-MF-C,02 2.6
5.0R28 (11/8")MM HEX Extension rod
Rod section 32mm

Length (mm)Part No.Weight approx (kg)3050207-0431-C,0215.0
MF HEX Speedrod
Rod section 32mm

Length (mm)Part No.Weight approx (kg)3050207-0431-MF-C,0215,7R32 (11/4")MM Round Extension rod

Length (mm)Part No. Fully carburized.Part No. Surface hardenedWeight approx (kg)915
1000
1220
1830
2435
3050
3660203-2509-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,034.8
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 hardenedWeight approx (kg)915
1220
1525
1830
2435
3050
3660203-2509-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 hardenedWeight approx (kg)1830
3050203-2518-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
4310203-2540-03-C,02
203-2543-03-C,0222.0
24.8
MF Round Guide rod

Length (mm)Part No.Weight approx (kg)3050
3660203-4731-MF-C,02
203-4737-MF-C,0227.0
32.0R/T38 (11/2")MM Hex Extension rod
Rod section 35.8mm

Length (mm)Part No. R38 threadPart No. T38 threadWeight approx (kg)1220
3050 235-0512-C.02
235-0531-C.028.4
18.7
MF Round Speedrod

Length (mm)Part No. R38 threadPart No. T38 threadWeight 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,028.3
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 threadPart No. T38 threadWeight approx (kg)1830
2435
3050
3660
3965
4270204-2718-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,0314.8
19.5
24.3
30.0
32.5
33.9
Fully carburized.
Length (mm)Part No. R38 threadPart No. T38 threadWeight approx (kg)280
1220
1525
1830
3050204-2702-C.02

235-2712-C,02
235-2715-C,02
235-2718-C,02
235-2731-C,022.0
10.0
12.5
14.4
24.0
MM Round Double Thread Extension Rod

Length (mm)Part No. R38 threadPart No. T38 threadWeight approx (kg)3050
3660 235-2731-95-SH,03
235-2737-95-SH,0323.8
30.0
Drifter rod
For one rod drilling drifter rods can be used.
MF Guide Speedrod

Length (mm)Part No. T38 threadWeight approx (kg)1830
3050
3660235-4918-MF-C,02
235-4931-MF-C,02
235-4937-MF-C,0221.1
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
7656
56
56
56
56
56
641220
1525
1830
3050
3660
4920
3660235-7012,10
235-7015,10
235-7018,10
235-7031,10
235-7037,10
235-7049,10
235-6937,1012.6
14.0
17.4
28.3
32.8
47.9
51.0T45 (13/4")MM Hex Extension rod
Rod section 42.6mm

Length (mm)Part No. Fully carburized.Part No. Surface hardenedWeight approx (kg)3050
3660236-0731-C,02
236-0737-C,02 25.6
30.8
MM Round Extension Rod

Length (mm)Part No. Fully carburized.Part No. Surface hardenedWeight approx (kg)3050
3660
4270
6095 236-2931-SH,03
236-2937-SH,03
236-2943-SH,03
236-2961-SH,0333.3
39.9
46.7
68.9
MF Round Speedrod

Length (mm)Part No. Fully carburized.Part No. Surface hardenedWeight approx (kg)1525
1830
3050
3660
4270
6095236-4915-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)3660236-5137-MF-C,0255.0
Guide tube

Hole diameter (mm)Tube diameter (mm)Length(mm)Part No.Weight approx (kg)76
76
76
76
89
8964
64
64
64
76
761220
1525
1830
3660
1830
3660236-6912,10
236-6915,10
236-6918,10
236-6937,10
236-6618,10
236-6637,1020.0
21.6
25.4
49.0
40.0
77.8T51 (2")MM Round Extension rod

Length (mm)Part No. Fully carburized.Part No. Surface hardenedWeight approx (kg)3660
6095 237-3137-SH,03
237-3161-SH,0352.3
84.0
MF Round Speedrod

Length (mm)Part No. Fully carburized.Part No. Surface hardenedWeight approx (kg)1830
3660
4270
6095237-5118-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
10276
76
871830
3660
3660237-6618,10
237-6637,10
237-6837,10*40.0
79.1
80.0