Where is your factory located and how is shipping handled?

Our factory is in Hejian City, Cangzhou, China. We are near Beijing airport and Tianjin seaport, ensuring fast and economical inland transportation.

What materials are used in the bit construction?

The bits are made of high carbon steel with tungsten carbide inserts and inlaid friction-reducing alloy for durability and performance.

Roller Cone Bits (52/8.5) for Rock Piling Core Barrel

Name: Roller Cone Bits (52/8.5) for Rock Piling Core Barrel
Brand: Hejian Longyue Drill Bit Manufacture Co., Ltd.
SKU: 2170031795

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

US$210.00-250.00

1 Piece

Sample price:US$800.00/piece.Request sample

Product profile

Customization

Available

Customized

Standard

AISI

Model NO.

8.5

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

Transport Package

Wooden Case

Specification

12 1/4"

Trademark

LONGYUE

Origin

Hebei, China

HS Code

8207199000

Production Capacity

200 Pieces/Week

Key features

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

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

Customizable Nozzles: Includes three nozzles with a center nozzle that can be customized to specific needs.

Enhanced Gauge Protection: More carbide inserts on the shirttail increase gauge holding capability and bearing life.

Wide Size Range: Available in sizes 7 1/2'', 8 1/2'', 9 7/8'', and 12 1/4'' for various drilling applications.

OEM/ODM Support: Offers OEM and ODM services with customized machine types and processing options.

Fast Delivery Advantage: Regular models in stock with prompt delivery; factory near Beijing/Tianjin ports.

Global Export Experience: Exported to over 25 countries including USA, Australia, and major European markets.

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: ≤6.13h 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 (Tricone/PDC/Hole opener), diameter, IADC code, rock hardness, drilling depth, rig capacity, and Incoterm (FOB/CIF/CFR). Photos are also helpful.

Q:What is the lead time for orders?

Regular models are available in stock for prompt delivery. Mass production lead time depends on order quantity, typically within 15 workdays for both peak and off-season.

Q:What payment terms are accepted?

We accept all regular payment terms including L/C, T/T, D/P, and PayPal.

Q:What are the main advantages of these roller cone bits?

Key advantages include high efficiency, wear resistance, advanced grease pressure control systems, and durable metal/rubber sealed bearings.

Q:Can the product be customized?

Yes, we offer OEM and ODM services. The center nozzle can be customized, and we support various processing types like forging.