How long is the delivery time?

The average lead time is within 15 workdays for both peak season and off-season.

Is customization available for this product?

Yes, customization options include customization from samples, designs, full customization, minor customization, and flexible customization.

What industries can use this drill bit?

It is widely used in petroleum, gas, water well drilling, mining, construction, geothermal, directional boring, and underground foundation work.

4 IADC 535 Rock Roller Tricone Drill Bit Three Cone Roller Bit for Hard Formation

Name: High-Performance Mining 8 1/2 Inch 12 1/4 IADC 535 Rock Roller Tricone Drill Bit Three Cone Roller Bit for Hard Formation
Brand: Changsha Fast Drill Engineering Machinery Co., Ltd.
SKU: 1960151581

Hunan, ChinaChangsha Fast Drill Engineering Machinery Co., Ltd.

US$1,899.00

2-9 Pieces

US$1,896.00

10-49 Pieces

US$1,890.00

50-999 Pieces

US$1,888.00

1,000+ Pieces

Product profile

Customization

Available

Customized

Non-Customized

Standard

AISI

Length

Stub-length

Type

Drill Bit

Material

High Manganese Steel

Usage

Well Drilling, Coal Mining

Thread Type

Male or Female

Applicable Industries

Energy & Mining

Processing Type

Forging

Use

Well Drilling

Application

Stone Mining in Mines

Color

Customized

Features

Fast Speed, High Efficiency

Product Name

Water Well Tricone Drill Bits

Video Outgoing-Inspection

Supported

Condition

New

Machine Type

Drilling Equipment

Weight (Kg)

98kg

MOQ

1 PC

IADC Code

535

Bit Diameter

311mm

Transport Package

Wooden Box

Specification

12 1/4''

Trademark

Finedrill

Origin

Changsha, Hunan, China

HS Code

8430691900

Production Capacity

15, 000PCS/Year

Key features

High Efficiency Drilling: Fast speed and high efficiency for soft formations like shale and coal.

Durable Construction: Made of high manganese steel with sealed/non-sealed bearings for stability.

Wear Resistance: Hard metal lugs and wear-resistant carbide on shirttail lip for longevity.

Wide Application: Suitable for petroleum, gas, water well, mining, and construction industries.

Customizable Color: Color is customized according to customer requirements.

Low Cost Performance: Proven reputation of high performance combined with low cost.

Flexible MOQ: Minimum Order Quantity is just 1 PC for trial or small orders.

Fast Delivery: Lead time within 15 workdays for both peak and off-season.

Company profile

High Repeat Buyers ChoiceCustomization from SamplesODM ServicesFast Delivery

Changsha Fast Drill Engineering Machinery Co., Ltd.

Hunan, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 Year CertifiedNearest Port: Changsha Port, Shenzhen PortAverage Response Time: ≤15h

AI-Powered supplier vetting

SummaryThe supplier is identified as a trading company and limited company, with a business scope covering drilling equipment, drilling rigs, core bits, mechanical equipment, communication technologies, software development, and related services. It demonstrates broad customization options and provides ODM services, but reported no new products in the past year, no 3D software design, no SDK, and no professional technical supplier R&D capability. Service-management controls are weak: no written procedures or records were provided for supplier assessment, corrective actions, or complaint handling. No overseas warehouse, showroom, overseas agent or branch, or offline trade-show participation was reported. Raw-material traceability is unknown. The provided financial records show zero stated operating revenue, operating costs, gross profit, and operating profit for the reported periods; no monetary figures are reproduced here.

After-Sales capabilityThe supplier reported no written procedures or records for effective service-capability assessment, corrective and preventive actions, or customer complaint handling. It also reported no overseas warehouse, showroom, overseas agent or branch, or offline trade-show participation, indicating limited documented after-sales and overseas service infrastructure.

Financial creditThe provided financial-capacity records state zero operating revenue, operating costs, gross profit, and operating profit for the reported periods. These figures provide explicit evidence of no recorded operating activity in the supplied data and do not support strong financial credibility.

R&D capabilityThe supplier reported no new products in the past year, no product-information R&D capability, no professional technical supplier R&D capability, no 3D software design service, and no available SDK. Although ODM service is available, the overall evidence shows limited demonstrated innovation capability.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization; it also provides ODM services. These statements directly support a broad customization offering, although they do not establish manufacturing execution capacity.

Product Q&A

Q:What formations is this drill bit suitable for?

It is designed for soft formations with low compressive strengths, such as shale, soft limestone, dolomite with interlayers, and coal ore.

Q:What are the operating parameters for this bit?

Recommended Weight on Bit is 24,500-61,250 Lbs, Rotary Speed is 80-110 RPM, and Air Back Pressure is 0.2-0.4 MPa.

Q:What bearing types are available?

The bits are equipped with both sealed and non-sealed bearings, including metal sealed journal bearing, rubber sealed journal bearing, and air-cooled bearing types.

Q:What is the minimum order quantity?

The Minimum Order Quantity (MOQ) is 1 PC.

Q:What are the payment terms?

We accept T/T, PayPal, D/P, Western Union, Small-amount payment, and LC.