What formations are suitable for IADC 637 bits?

IADC 637 bits are designed for hard to very hard formations with high compressive strength, such as hard limestone, dolomite, and marble. Recommended WOB is 0.5-1.2 kn/mm and RPM is 80-40.

Does the company offer OEM and ODM services?

Yes, the company offers both OEM and ODM services and has 5 R&D engineers to support customization.

8 1/2" Rock Drill Bit Roller Cones for Sale Manufacturer

Name: 8 1/2" Rock Drill Bit Roller Cones for Sale Manufacturer
Brand: Hejian Longyue Drill Bit Manufacture Co., Ltd.
SKU: 2165813015

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

US$250.00-300.00

1 Piece

Sample price:US$250.00/piece.Request sample

Product profile

Customization

Available

Customized

Standard

AISI

Model NO.

8 1/2"

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

8.5"

Trademark

LONGYUE

Origin

Hebei, China

HS Code

8207199000

Production Capacity

200 Pieces/Week

Key features

Customized Center Nozzle: Center nozzle can be customized to meet specific drilling requirements.

High-Efficiency Wear Resistance: Features tungsten carbide inserts and friction-reducing alloy for extended life.

Advanced Sealed Bearing System: Utilizes metal sealed and rubber sealed bearings for superior protection.

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

Multiple Bit Sizes: Sizes include 7 1/2'', 8 1/2'', 9 7/8'', 12 1/4'', 13 5/8'', and 17.5''.

Gauge Protection Design: Shirttail features more carbide inserts to increase gauge holding capability.

OEM and ODM Services: Manufacturer offers both OEM and ODM services for customized drilling tools.

Global Export Experience: Exported to over 30 countries including USA, Australia, and various European nations.

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: ≤5.59h 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 Tricone bits (Diameter, IADC code), PDC bits (Matrix or Steel body, blades quantity, cutter size), Hole opener (Diameter, pilot hole size, rock hardness, thread connection), and Roller cutters (Diameter of cones, model number). Sending photos is also a simple way. For more accuracy, provide drilling depth, drilling length, rock hardness, drill rig capacity, application type, Incoterm (FOB/CIF/CFR), transport method, and destination port.

Q:What are the lead time and payment terms?

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

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

The factory is located in Hejian City, Cangzhou, Hebei, China. It is near Beijing airport and Tianjin seaport, with transportation to these ports taking only one day, ensuring fast and economical inland charges.

Q:What materials are used for the drill bits?

The bits are made of High Carbon Steel with tungsten carbide inserts and inlaid friction-reducing alloy. Thrust faces are hardfaced with wear-resistant alloy.

Q:What types of bearings are used in the roller cones?

The product uses Journal/Roller Bearing Bit types with Metal sealed bearings and Rubber sealed bearings.