Ultra-Strong 91mm Diamond Core Drill Bit Drilling Through Tough Stone and Concrete
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Product Attributes
- Customization
- Available
- After-sales Service
- as Needed
- Warranty
- as Needed
- Model NO.
- 91#
- Certification
- ISO 9001:2000, ISO 9001:2008
- Standard
- AISI
- Surface Treatment
- Polishing
- Manufacturing Process
- Forging
- Material
- Carbon Steel,Diamond
- Weight (Kg)
- 0.9
- Usage
- Mining Industry
- Machine Type
- Hole Rig
- Use
- Rock Bit
- Color
- Original Color
- Showroom Location
- None
- MOQ
- 1 PCS
- Name
- Electroplating Diamond Drill Bit
- Video Outgoing-Inspection
- Provided
- Type
- Drill Bit
- Applicable Industries
- Energy & Mining
- Marketing Type
- New Product 2024
- Advantage
- Wear Resistant
- Thread Type
- Male Female Thread
- Machinery Test Report
- Provided
- Transport Package
- Wooden Box
- Specification
- 75mm
- Trademark
- SPEEDMADE
- Origin
- Hunan, China
- HS Code
- 82071300
- Package Size
- 10.00cm * 10.00cm * 10.00cm
- Package Gross Weight
- 1.500kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Ultra-Strong 91mm Diamond Core Drill Bit Drilling Through Tough Stone and Concrete
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Product Description

| Name | Electroplating Diamond Drill Bit |
| Thread type | Male female thread |
| Advantage | Wear Resistant |
| Size | 75mm 91mm 113mm 133mm 153mm 171mm 273mm |
| Coring Drill Bit | |
| A metric unit of length | 60mm, 75mm, 91mm, 113mm, 153mm, 171mm, 273mm, 325mm,...,custom size |
| Imperial unit of length | 2.5inch, 3inch, 4inch, 5inch, 6inch, 7inch, 8inch, 9inch, 10inch, 11inch, 12inch, 13inch,...,custom size |
| Connecting thread | 2.5inch, 3inch, 4inch, 5inch, 6inch, 7inch, 8inch, 9inch, 10inch, 11inch, 12inch, 13inch,...,custom size |
| Blade | 2blade, 3blade, 4blade, 5blade, 6blade, 7blade |
| Cutter | PDC: 1005, 1304, 1305, 1308, 1613, 1916 |
| Alloy Teeth: YG6, YG8, YG11, YG13, YK5, YK15 | |
| Mainly used for: | Geological exploration, rock sampling, water Wells |
| Suitable strata: | limestone, dolomite, carbonaceous limestone, marl, shale, marble, gneiss, calcite... Medium and hard strata. Mudstone, sandstone, pebble, backfill, broken strata such as weathered rock |
| Customized patented products: | Customized bread PDC pcs, spiral nozzle no plugging and no drilling for pebbles, backfill and other strata penetration fast core rate is very high |
Diamond Coring Drill Bit Diamond Coreless Drill Bit
Our factory can costomized different size
The introduction of electroplated diamond bits:
Electroplated diamond bits - Excellent precision and durability for hard materials
The electroplated diamond bit is an advanced, high-performance tool designed for precision drilling in hard and easily worn materials such as stone and concrete. The bit uses electroplating technology and is coated with a uniform layer of high-quality diamond particles to ensure durable and efficient drilling.
Electroplated diamond bits are ideal for professional and DIY applications, creating smooth, clean holes with little effort and wear. Its special coating enhances its ability to withstand high temperatures and pressure, providing consistent results and longer tool life compared to conventional drill bits. Whether you're working with fine surfaces or harder, denser materials, this drill ensures exceptional performance, making it a must-have tool for any project that requires precision and redesign
Main features:
Electroplated diamond coating: provides high quality materials
High durability The core is smooth and complete
Widely used: suitable for geological exploration, rock sampling, water well





Q1: What are your main products, and used for?
2. Min. order quantity: 1 piece.
3. Transportation: By DHL/TNT/Fedex express, air transportation, sea and train.
2.To Build good after -sale service system, we draw up the Quality Guarantee accordingly to the industrial standards combining field experience.Pls. see the Quality Guarantee.
About the Supplier
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASI249554". Items marked "" are certified.
Company Profile
Hunan speedmade drill bit. Co, . Ltd has been in the drilling industry for 15 years, is a professional manufacturer specializing in drilling bit tools, integrating R&D, production and sales. Through hundreds of times tested by the rig, we observe the drilling condition of the bit and adjust repeatedly, we have developed more than ten products categories, hundreds of different drill bits. We can customize different products according to the needs of customs. Our goal is to improve drilling efficiency and reduce drilling costs.
Hunan speedmade drill bit. Co, . Ltd has cooperated with a number of domestic scientific research institutions, such as the institute of geology of the Chinese academy of sciences, zhongyuan oilfield research institute, shenzhen geological survey and design institute and other institutions, the company has also widely absorbed the field opinions of old drilling workers, to improve and develop products. Edge drillers help customers improve drilling efficiency
Hunan speedmade drill bit. Co, . Ltd is a professional manufacturer specializing in drilling bit tools, our main products include PDC drill bit, hot-pressed diamond drill bit, electroplated diamond drill bit, alloy drill bit, reamer, drill rig, drill pipe, core tube, etc. We offer different drill bit models and sizes, use for water wells, natural gas mining, oil mining, coal mining, geothermal sources, or geological exploration, different rocks, include limestone, granite, basalt. We have high standards, strict requirements, continuous technological innovation, we are sincerely looking forward to working with you.
Why choose us be a supplier, we reply following questions?
Is your company a distributor or a manufacturer?
A: Yes, we are a a professional factory of drilling bits in China.
2. How about your products?
A: All our activities are accredited to ISO 9001: 2008, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request. We have many high quality prducts.
3. What is the packaging & delivery?
A: We used high quality export carton or standard export woodern case
4. What is the time about the delivery?
A: Repared to deliver within 1 week, if in stock.
Depends on order quantity, when out of stock, 7-30days
Transportation: By sea or air
5. How to order the products?
A: Send the inquiry with detail item description or with model number. If there is no packing demand we take it as sea-way packing. If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- Hengyang, Hunan, China
-
Plant Area
- 1255.38 square meters
-
Number of Employees
- 47
-
Registered Capital
- 15,000,000 RMB
-
Terms of Payment
- T/T, PayPal, Western Union, LC, D/P, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
- Peak Season Lead Time, one month, Off Season Lead Time, within 15 workdays
-
Nearest Port
- Guangzhou Port.Tianjing Port.
-
Supply Chain Partners
- 30
Our Production Capability & Technical Expertise
- Main Products
- PDC Drill Bits, Drill Bits, Water Drill Bits, Oil Dirll Bits, Machine Spare Part, Tricone Drill Bit, Tire Core Bits, DTH Bits, Bits, Tools
-
Production Lines
- 5
-
Production Machines
- CNC, Drilling Machine, Milling Machine, Sand Blast machine, Diamond Cutting Weld Solder, Laser cutting machine
-
Inspection Type for Finished Products
- 100% inspection Visual inspection Function inspection
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples,Customization from Designs
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 2 people
-
Traceability of Raw Materials
- Yes
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2013-05-13
-
Export Year
- 5 years
-
Main Markets
- North America, Southeast Asia/ Mideast, Australia
-
Repeat Buyers Choice
- 80%~100%
-
Number of Foreign Trading Staff
- 4
-
Overseas Agent/Branch
- No
Our Certifications, Standards & Industry Recognition
-
Management System Certification
- ISO14001
-
Cooperated with Fortune 500
- No
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