Payment Terms | L/C, T/T |
Supply Ability | 1000 pcs per Month |
Delivery Time | 15-35 working days |
Packaging Details | Wooden case , signle item per case |
Product name | Rock Drill Bit |
Type | Drill Bit |
Formation | hard formations |
Bit size | 12 1/4"(311.2mm) |
Use | Well Drilling,Mining drill |
Processing type | Forging |
Machine type | Drilling Tool |
Application | Mining |
Brand Name | Tianying |
Model Number | 12 1/4" IADC725 |
Certification | ISO9001 |
Place of Origin | Hunan CHINA |
View Detail Information
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Product Specification
Payment Terms | L/C, T/T | Supply Ability | 1000 pcs per Month |
Delivery Time | 15-35 working days | Packaging Details | Wooden case , signle item per case |
Product name | Rock Drill Bit | Type | Drill Bit |
Formation | hard formations | Bit size | 12 1/4"(311.2mm) |
Use | Well Drilling,Mining drill | Processing type | Forging |
Machine type | Drilling Tool | Application | Mining |
Brand Name | Tianying | Model Number | 12 1/4" IADC725 |
Certification | ISO9001 | Place of Origin | Hunan CHINA |
High Light | tungsten carbide insert bit ,milled tooth drill bit |
Classified According To IADC Hard Rock Drill Bits Can Stand Up Prolonged Drilling
Click here for catalogueTCI DRILL BIT.pdf
Advantage:
What is Hard Rock Drill Bits
All bits the above are manufactured according to strict standards, set forth by the American Petroleum Institute (API).
And classified according to characteristics set forth by the International Association of Drilling Contractors (IADC).
Hard Rock Drill Bit is cut rock by Tungsten Carbide teeth projecting from rolling cutters, which rotate on the drill-bit bearings. Inturn, the drill bit rotates at a high rate, and presses against the bottom hole with a high axial force. The teeth of the rolling cutters roll over the bottom hole and, owing to the large stresses that develop in the area of contact between the teeth and the rock, cut the rock by crushing and chipping. As the hardness of therock increases, the rotation rate decreases and the axial force increases. Destroyed at the mine the rock is removed to the surface by air compressor, mud pump, or a combination of these methods.All bits the above are manufactured according to strict standards, set forth by the American Petroleum Institute (API). And classified according to characteristics set forth by the International Association of Drilling Contractors (IADC).
How to read an IADC Code properly
First Digit | TOOTH |
1 | Steel tooth bits for Soft Formation |
2 | Steel tooth bits for Medium Formation |
3 | Steel tooth bits for Hard Formation |
4 | TUNGSTEN CARBIDE INSERT BITS For varying formation hardness with 4 being the softest and 8 the hardest. |
5 | |
6 | |
7 | |
8 | |
Second Digit | FORMATION |
1 | 1,2,3 and 4 are further breakdown of formation with 1 being the softest and 4 the hardest. |
2 | |
3 | |
4 | |
Third Digit | BEARING/SEAL TYPE |
1 | Standard open bearing roller bit |
2 | Standard open bearing roller bit, air-cooled |
3 | Standard open bearing roller bit with gauge protection |
4 | Sealed roller bearing bit |
5 | Sealed roller bearing bit with gauge protection |
6 | Journal sealed bearing bit |
7 | Journal sealed bearing bit with gauge protection |
Fourth Digit | ADDITIONAL FEATURES |
A | Air application |
R | Reinforced welds |
C | Center jet |
S | Standard steel tooth |
D | Deviation control |
X | Chisel insert |
E | Extended jet |
Y | Conical Insert |
G | Extra gage protection |
Z | Other insert shape |
J | Jet Deflection |
Working theory of TCI tricone bit
The medium formation TCI tricone bits features aggressive chisel tungsten carbide inserts on the heel rows and inner rows. This design provides a fast drilling rate and added cutting structure durability in medium to medium hard for mations. The HSN rubber O-ring provides adequate sealing for bearing durability.
Tricone bit is connected with the drill stem and rotates along with it, and drive cones to pressed on the rock. Each cone rotates round the axis of its leg and three cones simultaneously revolve around the bit center. The tungsten carbide inserts on the cone shell cause the formation to spall under the weight on bit and the impact load of cone rotating, the debris will be discharged out to hole by compression air.
The medium formation TCI tricone bits features aggressive chisel tungsten carbide inserts on the heel rows and inner rows. This design provides a fast drilling rate and added cutting structure durability in medium to medium hard for mations. The HSN rubber O-ring provides adequate sealing for bearing durability.
Tianying's Best Service
1. 365×24 Year-round Service,We are committed to year-round 24-hour service even during holidays.
2. Provide professional technical services, including products introduction, selecting and problem solution etc.
3. Within 35 Working Days Quick Delivery.
Our Company
Hunan Tianying Drilling Machine Manufacturing Co., Ltd, a high-technology engineering group with world-leading positions, which manufacturers and supply various Rock Drill bits for Blasting drilling & mining. Our believe that innovative think drives the delivery of quality tools to customers, our expertise is evident in tricone bits. Tianying rock drilling bits are renowned for their great reliability, excellent and even quality and long services life with an expertise direct to any corner of the world.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
1958
Total Annual:
8000000-10000000
Employee Number:
100~200
Ecer Certification:
Site Member
Professional. Duarable, Efficient, TIANYING TCI Tricone Bit! Hunan Tianying Drilling Machine Manufacturing Co., Ltd.is one state-appointed factory of mining tools especially for tricone bit. we are established in 1958 and located at Zhuzhou city of Hunan provice. one fam... Professional. Duarable, Efficient, TIANYING TCI Tricone Bit! Hunan Tianying Drilling Machine Manufacturing Co., Ltd.is one state-appointed factory of mining tools especially for tricone bit. we are established in 1958 and located at Zhuzhou city of Hunan provice. one fam...
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