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8 1/2" Rock Cutter Roller Cone Single Bit
US$250.00-300.00
1 Piece
Sample price:US$250.00/piece.Request sample
Product profile
Customization
AvailableCustomized
CustomizedStandard
AISIModel NO.
8.5Type
Center Drill BitMaterial
High Carbon SteelUsage
Well DrillingMachine Type
Drilling ToolProcessing Type
ForgingAdvantage
High-Efficiency ,Wear ResistantBearing Type
Journal /Roller Bearing BitTransport Package
Wooden CaseSpecification
8.5"Trademark
LONGYUEOrigin
Hebei, ChinaHS Code
8207199000Production Capacity
200 Pieces/WeekKey features
High-Efficiency & Wear Resistant: Forged high carbon steel with tungsten carbide inserts for superior durability.
Advanced Bearing System: Metal sealed and rubber sealed bearings with friction-reducing alloy for long life.
Customizable Nozzles: Center nozzle can be customized to meet specific drilling requirements.
Wide Size Range: Available in 7 1/2'', 8 1/2'', 9 7/8'', and 12 1/4'' bit sizes.
Multiple IADC Codes: Supports IADC codes 117, 127, 126, 217, 417, 437, 517, 537, 617, 627, 637, 737.
Fast Delivery: Regular models in stock with prompt delivery; mass production within 15 workdays.
OEM/ODM Service: Supports customized machine types, processing types, and bearing configurations.
Gauge Protection: More carbide inserts on the shirttail increase gauge holding capability and bearing life.
Company profile

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2016-08-01 CertifiedNearest Port: Tianjin PortAverage Response Time: ≤4.12h CertifiedTerms of Payment: LC, T/T, D/P, etc.
AI-Powered supplier vetting
SummaryHejian Longyue Drill Bit Manufacture Co., Ltd. is a manufacturing factory located in Hejian City, Cangzhou, Hebei, China. Established in 2016, it operates over 10 production lines with an annual output between US$10 million and US$50 million. The company exports 51% to 70% of its products and has self-managed import-export rights. It specializes in producing drill bits and other related tools, serving both domestic and international markets.
Supplier typeThe supplier is a manufacturing factory operating as a limited company in Hebei, China, established in 2016.
After-Sales capabilityThe supplier emphasizes prompt and sincere responses to inquiries, indicating a focus on customer service.
R&D capabilityThe company has a total of 5 R&D engineers and is capable of designing drill bits, showing some innovation capability.
Production capacityWith over 10 production lines and a plant area of 10,000 m², the supplier shows strong production capacity.
Customization capabilityThe supplier can design PDC bits according to customer requests, indicating customization capability.
Product Q&A
Q:How to get an exact quotation?
A:
Please send detailed information including bit type (Tricone/PDC/Hole opener/Roller cutters), diameter, IADC code, blade quantity, cutter size, pilot hole size, rock hardness, thread connection, drilling depth, rig capacity, application, Incoterm (FOB/CIF/CFR), transport method, and destination port. Photos are also helpful.
Q:What are the lead time and payment terms?
A:
Regular models are available in stock for prompt delivery. Mass production lead time is within 15 workdays. We accept L/C, T/T, D/P, and PayPal.
Q:What is the material and construction of the bit?
A:
The bit is made of high carbon steel with tungsten carbide inserts and inlaid friction-reducing alloy. It features metal sealed and rubber sealed bearings with an advanced grease pressure control system.
Q:What are the recommended drilling parameters for IADC 637?
A:
For IADC 637, use WOB of 0.5-1.2 kn/mm and RPM of 80-40. It is suitable for hard to very hard formations with high compressive strength, such as hard limestone, dolomite, and marble.
Q:Can the nozzle be customized?
A:
Yes, the center nozzle can be customized to suit specific drilling needs.
Send Inquiry
*To:
Hejian Longyue Drill Bit Manufacture Co., Ltd.
Hejian Longyue Drill Bit Manufacture Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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