Does the product support customization?

Yes, the center nozzle can be customized. We also offer OEM and ODM services for various drilling tool specifications.

What types of bearings are used?

The bit uses journal/roller bearing types with metal sealed and rubber sealed bearings for reliable performance.

12 1/4'' Single Cone Rock Roller Drill Bit for Hard Rock

Name: 12 1/4'' Single Cone Rock Roller Drill Bit for Hard Rock
Brand: Hejian Longyue Drill Bit Manufacture Co., Ltd.
SKU: 2100478265

Hebei, ChinaHejian Longyue Drill Bit Manufacture Co., Ltd.

US$600.00-1,000.00

1 Piece

Sample price:US$600.00/piece.Request sample

Product profile

Customization

Available

Customized

Length

Taper-length

Model NO.

12 1/4''

Type

Center Drill Bit

Material

High Carbon Steel

Usage

Well Drilling

Machine Type

Drilling Tool

Processing Type

Forging

Advantage

High-Efficiency, Wear Resistant

Bearing Type

Journal /Roller Bearing Bit

Pin Connection

4 1/2" Regular

Transport Package

Wooden Case

Specification

8 1/2''

Trademark

Longyue

Origin

Hebei, China

HS Code

8207199000

Production Capacity

200 Pieces/Week

Key features

High-Efficiency Design: Forged high carbon steel with tungsten carbide inserts for superior wear resistance.

Customizable Nozzles: Center nozzle can be customized to meet specific drilling requirements.

Advanced Bearing System: Features metal sealed and rubber sealed bearings with advanced grease lubrication.

Gauge Protection: Shirttail design with extra carbide inserts increases gauge holding capability.

Wide IADC Coverage: Available in codes 117, 127, 126, 217, 417, 437, 517, 537, 617, 627, 637, 737.

OEM/ODM Services: Full OEM and ODM services available for custom drilling tool specifications.

Fast Delivery: Regular models in stock with prompt delivery and fast inland transport.

Versatile Applications: Suitable for oil/gas, water well drilling, HDD, and foundation applications.

Company profile

Hejian Longyue Drill Bit Manufacture Co., Ltd.

Hebei, China

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 China-based manufacturing factory in Hejian, Cangzhou, Hebei, established in 2016, with 67 employees and a 10,000 m² plant. It produces drilling-related equipment, operates more than 10 production lines, and has 6–10 quality-control staff. The supplier states that it can design HY PDC bits according to customer requirements, indicating customization capability. It has five years of R&D engineer experience, exports 51%–70% of sales, and holds self-operated import and export rights. However, the provided information does not confirm certifications, after-sales capabilities, or verified customer cases. Trade records show limited documented import activity involving Uzbekistan and Kazakhstan, but these records alone do not establish broad customer performance or financial credibility.

Supplier typeThe supplier is explicitly identified as a factory/manufacturer and a limited company located in Hejian, Cangzhou, Hebei, China. Its stated business scope includes drilling equipment and manufacturing-related products, consistent with a specialized industrial manufacturer.

R&D capabilityThe supplier reports five years of total R&D engineer experience and states that it can design HY PDC bits according to customer requests. This provides explicit evidence of product-design capability, although no broader R&D team size, patents, testing facilities, or innovation results are given.

Production capacityThe supplier operates more than 10 production lines, employs 6–10 quality-control staff, and has a 10,000 m² manufacturing plant with 67 total employees. These stated operational resources support a positive assessment of production capability, though actual capacity and delivery performance are not specified.

Customization capabilityThe company explicitly states that it can design HY PDC bits according to customer requirements. Its listed product range includes PDC bits, tricone bits, roller cones, hole openers, rock reamers, and related drilling products, supporting product-specific customization capability.

Product Q&A

Q:How to get an exact quotation?

Please send detailed information including bit type, diameter, IADC code, rock hardness, drilling depth, rig capacity, and application. Photos are also helpful. Include Incoterms and destination port.

Q:What are the lead time and payment terms?

Regular models are in stock for prompt delivery. Mass production depends on order quantity. We accept L/C, T/T, D/P, and PayPal. Peak and off-peak lead times are within 15 workdays.

Q:Where is the factory located and how is shipping handled?

The factory is in Hebei, China, near Beijing airport and Tianjin seaport. Transportation to the port takes only one day, ensuring fast and economical inland charges.

Q:What materials are used for the drill bit?

The bit is made of high carbon steel with tungsten carbide inserts and inlaid friction-reducing alloy for durability and wear resistance.

Q:What are the recommended drilling parameters?

Parameters vary by IADC code and formation. For example, IADC 117 requires 0.30-0.753 kn/mm WOB and 180-60 RPM for very soft formations.