Jingzhou JingTian MingJian Hardmetal Co., Ltd. formerly known as the state-run 949 hardmetal branch factory, the ownership reformed to Private enterprise in 2000 years, is a Cemented carbide professional production enterprise with forty years of history, which has 250 tons of annual production of various types of cemented carbide products. Modern standard factory buildings and desirable garden-style factory environment. Company has advanced manufacturing equipment, complete detection instructions, effective quality control system to ensure product quality. Company has passed the ISO9001 quality system certification for 13 consecutive years. Company's cemented carbide products brand "Rui Dian" are sold in more than 20 provinces, cities and overseas markets.
The main products of company are various specifications and models of Mining column tooth, ball tooth, coal cutting tooth, petroleum drill nozzle, threaded nozzle, alloy strip, alloy blade, high gravity alloy and various non-standard special-shaped wear-resistant parts, tools, molds etc.
"Unstoppable, Public model" interprets the brand of our company, is also a kind of enterprise spirit that our company pursues unremittingly. We sincerely thank the old and new customers for their trust and support, and look forward to your long-term friendly cooperation and create a better future with you.
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(One) Mining alloy tooth: JingTian MingJian Company has strong scientific and technological innovation and R & D capability. The products of carbide column tooth produced by our company are widely used in various specifications of impact and DTH drill, oil roller drill, mine drill. The product has the notable characteristics of strong impact resistance, good wear resistance, stable performance etc.
General specification for Mining alloy tooth
Serial number | Cobalt content(%) | Hardness(HRA) | Density(g/cm3) | Coercive force(KA/m | Magnet cobalt(%) | Flexure strength(N/mm2 | Grain size(μm) | Porosity(≤) |
YG6 | 6 | ≥89.7 | 14.85~15.05 | 11.0~16.0 | 4.8~6.0 | ≥2950 | 1.2~1.6 | A02B00C00 |
YK06 | 6 | ≥90.2 | 14.85~15.05 | 11.2~14.2 | 5.2~6.0 | ≥3000 | 1.0~1.6 | A02B00C00 |
YG8 | 8 | ≥89.5 | 14.65~14.85 | 10.0~15.5 | 6.5~7.9 | ≥3000 | 1.2~1.6 | A02B00C00 |
YG8C | 8 | ≥88.0 | 14.85~14.85 | 7.3~9.6 | 6.6~7.9 | ≥3050 | 2.4~4.0 | A02B00C00 |
YG10C | 10 | ≥87.5 | 14.4~14.60 | 6.0~9.3 | 8.0~10.0 | ≥3050 | 2.4~4.0 | A02B00C00 |
YK20 | 10 | ≥86 | 14.4~14.60 | 5.5~8.3 | 8.8~10.0 | ≥2800 | 4.0~6.0 | A02B00C00 |
YG11 | 11 | ≥88 | 14.30~14.50 | 8.0~13.0 | 9.0~11.0 | ≥3200 | 1.2~1.6 | A02B00C00 |
YG11C | 11 | ≥87.2 | 14.30~14.50 | 5.5~8.7 | 9.0~11.0 | ≥3200 | 2.4~4.0 | A02B00C00 |
YG13C | 13 | ≥86 | 14.10~14.30 | 5.5~7.5 | 11.0~13.0 | ≥3300 | 2.4~4.0 | A02B00C00 |
YG15C | 15 | ≥85.5 | 14.00~14.20 | 4.5~6.8 | 12.5~15.0 | ≥3300 | 2.4~4.0 | A02B00C00 |
YG16C | | ≥85.0 | 13.90~14.10 | 4.0~6.0 | 13.5~16.0 | ≥3300 | 2.4~4.0 | A02B00C00 |
1. Ball shaped tooth: used for rock impact drills, DTH drills, and bit drills for oil rigs. It is suitable for hard rock formations.
model | Size(mm) | model | Size(mm) |
D | H | D | H |
Q0808 | 8.0 | 8.0 | Q1416 | 14.0 | 16.0 |
Q1012 | 10.0 | 12.0 | Q1418 | 14.0 | 18.0 |
Q1313 | 13.0 | 13.5 | Q1517 | 15.0 | 17.0 |
Q1315 | 13.0 | 15.5 | Q1618 | 16.0 | 18.0 |
2. Cone tooth: used for rock drilling, impact drill, DTH drill and cone drill. It is suitable for hard rock formation
model | Size(mm) | model | Size(mm) |
D | H | D | H |
Z0810 | 8.0 | 10.0 | Z1320 | 13.0 | 20.0 |
Z0812 | 8.0 | 12.0 | Z1418 | 14.0 | 18.0 |
Z1218 | 12.0 | 18.0 | Z1420 | 14.0 | 20.0 |
Z1318 | 13.0 | 18.0 | Z1625 | 16.0 | 25.0 |
3. Flat tooth: suitable for roller drill, diamond drill, stabilizer hole, reduce wear of friction surface.
model | size | model | size |
D | H | E | D | H | E |
P0404 | 4.0 | 4.0 | 1 | P0807 | 8.0 | 7.0 | 1.2 |
P0405 | 4.0 | 5.0 | 1 | P0907 | 9.0 | 7.0 | 1.5 |
P0506 | 5.0 | 6.0 | 1 | P1008 | 10.0 | 8.0 | 1.5 |
P0707 | 7.0 | 7.0 | 1 | P1210 | 12.0 | 10.0 | 1.5 |
4. Wedge tooth: used for special shaped DTH drill and roller drill, suitable for soft rock of high drilling speed, low probability of broken teeth.
model | size(mm) | model | size(mm) |
D | H | h | D | H | h |
X0809 | 8.0 | 9.0 | 5.5 | X1420 | 14.0 | 20.0 | 10.6 |
X1011 | 10.0 | 11.0 | 7.0 | X1520 | 15.0 | 20.0 | 12.0 |
X1013 | 10.0 | 130 | 9.0 | X1621 | 16.0 | 21.0 | 11.0 |
X1215 | 12.0 | 15.0 | 9.0 | X1824 | 18.0 | 24.0 | 13.5 |
X1418 | 14.0 | 18.0 | 10.0 | | | | |
5. Edge wedge tooth: for special shaped DTH drill and roller drill
model | Size(mm) | model | Size(mm) |
D | H | h | D | H | h |
B140170 | 14.0 | 17.0 | 12.0 | B160210 | 16.0 | 21.0 | 13.0 |
B140180 | 14.0 | 18.0 | 12.0 | B190240 | 16.0 | 24.0 | 15.0 |
B150198 | 15.0 | 19.8 | 12. | B200280 | 20.0 | 28.0 | 16.0 |
6. Dipper tooth: for roller drill, for soft rock in high speed drilling
model | Size(mm) |
D | H | h |
5140190 | 14.0 | 19.0 | 11.0 |
5150203 | 15.0 | 20.3 | 10.8 |
5160243 | 16.0 | 24.3 | 12.8 |
5160260 | 16.0 | 26.0 | 14.0 |
5170240 | 17.0 | 24.0 | 13.0 |
7. Saw tooth: suitable for abrasion resistant tooth which prevent abrasion of steel surface in drilling
model | size(mm) |
D | H |
φ10X6 | 10.0 | 6.0 |
φ12X6 | 12.0 | 6.0 |
φ12X8 | 12.0 | 8.0 |
8. Frustum tooth: used for special shaped DTH drill, cone drill, rolling disc drill.
model | size(mm) |
D | H | h |
φ8X9 | 8.0 | 9.0 | 6.5 |
φ10X10 | 10.0 | 10.0 | 7.5 |
φ12X8 | 12.0 | 10.0 | 7.5 |
(Two) Mining picks: widely used in coal mining machinery and single cone drill. The product has the characteristics of high strength, good toughness, long service life etc.
General specification for carbide cutting coal teeth for mining
Serial number | Cobalt content(%) | Hardness(HRA) | Density(g/cm3) | Coercive force(KA/m) | Magnet cobalt(%) | Flexure strength(N/mm2 | Grain size(μm) | Porosity(≤ |
YG6 | 6 | ≥89.7 | 14.85~15.05 | 11.0~16.0 | 4.8~6.0 | ≥2950 | 1.2~1.6 | A02B00C00 |
YK06 | 6 | ≥90.2 | 14.85~15.05 | 11.2~14.2 | 5.2~6.0 | ≥3000 | 1.0~1.6 | A02B00C00 |
YG8 | 8 | ≥89.5 | 14.65~14.85 | 10.0~15.5 | 6.5~7.9 | ≥3000 | 1.2~1.6 | A02B00C00 |
YG8C | 8 | ≥88.0 | 14.85~14.85 | 7.3~9.6 | 6.6~7.9 | ≥3050 | 2.4~4.0 | A02B00C00 |
YG10C | 10 | ≥87.5 | 14.4~14.60 | 6.0~9.3 | 8.0~10.0 | ≥3050 | 2.4~4.0 | A02B00C00 |
YK20 | 10 | ≥86 | 14.4~14.60 | 5.5~8.3 | 8.8~10.0 | ≥2800 | 4.0~6.0 | A02B00C00 |
YG11 | 11 | ≥88 | 14.30~14.50 | 8.0~13.0 | 9.0~11.0 | ≥3200 | 1.2~1.6 | A02B00C00 |
YG11C | 11 | ≥87.2 | 14.30~14.50 | 5.5~8.7 | 9.0~11.0 | ≥3200 | 2.4~4.0 | A02B00C00 |
YG13C | 13 | ≥86 | 14.10~14.30 | 5.5~7.5 | 11.0~13.0 | ≥3300 | 2.4~4.0 | A02B00C00 |
YG15C | 15 | ≥85.5 | 14.00~14.20 | 4.5~6.8 | 12.5~15.0 | ≥3300 | 2.4~4.0 | A02B00C00 |
YG16C | | ≥85.0 | 13.90~14.10 | 4.0~6.0 | 13.5~16.0 | ≥3300 | 2.4~4.0 | A02B00C00 |
1. M20 type coal cutting teeth: For coal mining machinery and single cone bit.
model | size(mm) |
D | H | r | α0 | e |
M2009 | 9 | 16 | 1 | 90 | 1.0 |
M2012A | 12 | 18 | 1.5 | 82 | 1.0 |
M2012B | 12 | 20 | 1.5 | 82 | 1.5 |
M2018 | 18 | 32 | 1.5 | 82 | 2.0 |
2. Umbrella type coal cutting tooth: used for the cutting tooth for coal mining machinery
model | Size(mm) |
D | H | h | R | A |
JC-ф1822 | 18 | 22 | 8 | 30 | 1.5 |
JC-ф1822 | 20 | 25 | 10 | 35 | 1.5 |
JC-ф1822 | 20 | 27 | 10.5 | 35 | 4 |
JC-ф1822 | 22 | 28 | 12 | 40 | 1.5 |
3. Common type coal cutting teeth: For coal mining machinery and single cone bit.
model | Size(mm) |
D | H | H | R |
M9X14 | 9.1 | 14 | 8.6 | 10 |
M18X26 | 18.58 | 25.6 | 15.4 | 32 |
M20X28 | 20.5 | 28.25 | 15 | 26 |
M21X26 | 21.1 | 25.5 | 14 | 26 |
(Three) Carbide wear-resistant parts: After years of research and development, our company has developed corresponding carbide wear-resistant parts for petroleum, machinery and other industries. The product has the characteristics of high strength, corrosion resistance and high wear resistance. The company produces all kinds of specifications, various brands of alloy wear-resistant parts, It is the first choice for the major screw drilling enterprises in China.
Serial number | Cobalt content(%) | Hardness(HRA) | Density( g/cm3 ) | Coercive force(KA/m) | Flexural strength(Mpa) | Grain size(μm) | Porosity |
YG8 | 8 | ≥89.0 | 14.5-14.8 | 8.5-11.5 | ≥2000 | 1.2-1.6 | A02B00C00 |
1. Cemented carbide T21 model : used in Coring bit for drilling into a hard formation .
model | Size(mm) |
H(mm) | B(mm) | S(mm) |
25x6x3 | 25 | 6 | 3 |
27x6x3 | 27 | 6 | 3 |
30x6x3 | 30 | 6 | 3 |
33x6x3 | 33 | 6 | 3 |
36x6x3 | 36 | 6 | 3 |
2. Cemented carbide T10 model : used in Coring bit for oil well drilling, scraper bit and self grinding .
model | Size(mm) |
H(mm) | B(mm) | S(mm) |
8x5x2 | 8 | 5 | 2 |
8x5x3 | 8 | 5 | 3 |
10X5X2 | 10 | 5 | 2 |
10X5X2.2 | 10 | 5 | 2.2 |
10X5X2.5 | 10 | 5 | 2.5 |
10x5x3 | 10 | 5 | 3 |
16x5x2 | 16 | 5 | 2 |
16x5x3 | 16 | 5 | 3 |
20x5x2 | 20 | 5 | 2 |
20x5x2.2 | 20 | 5 | 2.2 |
20x5x2.5 | 20 | 5 | 2.5 |
20x5x3 | 20 | 5 | 3 |
3. Cemented carbide T20 model : used in Coring bit for drilling into a harder formation.
model | Size(mm) |
H(mm) | B(mm) | S(mm) |
25x6x3 | 25 | 6 | 3 |
27x6x3 | 27 | 6 | 3 |
30x6x3 | 30 | 6 | 3 |
(Four) Nozzle used for petroleum bit: Our company is the earliest professional manufacturer of oil bit nozzles in China. And we are the designated supplier by all major oil fields in China also . We can supply general model nozzle, lengthened nozzle, pulsed nozzle used for three rock bit , and nozzle, Slightly lengthened nozzle used for single cone bit , and thread nozzle suit for diamond drill .
brand of Cemented carbide used for Oil bit nozzle
Serial number | Cobalt content(%) | Hardness(HRA) | Density( g/cm3 ) | Coercive force(KA/m) | Flexural strength(Mpa) | Grain size(μm) | Porosity |
YG8 | 8 | ≥89.0 | 14.5-14.8 | 8.5-11.5 | ≥2000 | 1.2-1.6 | A02B00C00 |
YG11C | 11 | ≥87.0 | 14.2-14.5 | 5.5-9.0 | ≥2500 | 2.0-3.0 | A02B00C00 |
1. Tricone nozzle, single cone nozzle : our company is dedicated to the development and manufacture of new nozzles , and develop new products that can meet requirements of different drilling condition in oil field , that can provide a complete range of oil bit matching nozzles . The product has high reliability and advanced design of fluid system , it also can resist flushing also .
Nozzle OD(mm) | 20.3 | 23.5 | 29.74 | 32.89 | 40.84 | (mm) Nozzle diameter |
Assembly length(mm) | 17.48 | 19.05 | 20.62 | 26.97 | 26.97 |
Bit size | 33/4″-43/4″ | 55/8″-63/4″ | 71/2″-77/8″ | 83/8″-133/4″ | 143/4″-26″ |
Nozzle Model | general Model | general Model | general Model | general Model | Medium length Model | Pulse model | general Model |
Nozzle code | S1-6~S1-13 | S2-6~S2-15 | S3-6~S3-24 | S4-6~S4-24 | A6~A15 | E8~E15 | S5-6~S5-24 | 6~~24 |
2. Thread nozzle for diamond bit: The company can supply a complete range of high quality thread nozzle used for diamond bit . The product has high reliability and advanced design of fluid system , it also can resist flushing also .
nozzle OD(mm) | φ25.21 | φ20.30 | φ18.85 | (mm) Nozzle diameter |
OD of seal section(mm) | φ22.20 | φ16.10 | φ16.00 |
Assembly length(mm) | 34.8 | 30.8 | 29.0 |
Nozzle model | SP | SP20 | SP19 | 1st system | 2nd system |
Nozzle code | SP-10~SP-22 | SP20-10~~SP20-16 | SP19-10~SP19-16 | 7.94 ~17.46 | 8~18 |
(Five) Tungsten proportion alloy
(Six) All kinds of non-standard special-shaped alloy products(can supply based
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Advanced inspection equipment
1, Vacuum degreasing sintering furnace
2, CNC thread grinder
3, High precision and high efficiency automatic press
4, High frequency induction combustion furnace
5, Blovi optical hardness tester
6, Cobalt magnetic measuring instrument
7, Metallurgical microscope