What certifications does the product have?

The product is certified under ISO 9001:2000 and adheres to ASTM standards.

What is the lead time for orders?

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

What payment terms are accepted?

Accepted payment terms include LC, T/T, and Western Union.

Three or Four Wings Step Drag Bit Mining Bit

Name: Three or Four Wings Step Drag Bit Mining Bit
Brand: Changsha Sollroc Engineering Equipments Co., Ltd.
SKU: 858360545

Hunan, ChinaChangsha Sollroc Engineering Equipments Co., Ltd.

US$200.00

1 Piece

Product profile

Customization

Available

Certification

ISO 9001:2000

Standard

ASTM

Model NO.

drag bit

Surface Treatment

Polishing

Manufacturing Process

Forging

Material

Alloy Steel

Metierial

High Manganese Steel

Formation

Soft and Middle Rock

Diameter

3" to 17 1/2"

Usage

Mining, Water Well Drilling, etc.

Connection Thread

2 3/8, 3 1/2"

Color

Black or Optional

Transport Package

Carton+Plywood

Specification

four wing drag bit

Trademark

SOLLROC

Origin

China

Production Capacity

10000/Month

Key features

High Quality Material: Blades made from heat-treated alloy steel forgings with high-grade carbide inserts.

Customizable Options: Material, formation type, diameter (3-17.5 inches), and color are customizable.

Versatile Application: Suitable for mining, water well drilling, and soft formations like sand and clay.

Multiple Wing Types: Available in three-wing and four-wing configurations, including Chevron and Step types.

Certified Quality: Manufactured under ISO 9001:2000 standards with strict quality control procedures.

Durable Construction: Carbide inserts brazed with 50% nickel silver alloy for superior durability.

Wide Size Range: Diameter ranges from 3 inches (89mm) to 17.5 inches (444mm).

Expert Manufacturer: Over 10 years of experience in designing and manufacturing rock drilling tools.

Company profile

High Repeat Buyers ChoiceYears of Export ExperienceExperienced TeamFlexible Customization

Changsha Sollroc Engineering Equipments Co., Ltd.

Hunan, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2005-05-18Nearest Port: Shanghai,Guangzhou, ShenzhenAverage Response Time: ≤24hTerms of Payment: LC, T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, CFR, CIF, FCA, EXW

AI-Powered supplier vetting

SummaryChangsha Sollroc Engineering Equipments Co., Ltd. is identified as both a trading company and manufacturer/factory in China, supplying mechanical, specialized equipment and concrete additives. It reports production capacities for DTH and RC products, flexible customization, broad export-market coverage, and participation in the BAUMA trade show. However, the available information shows no inventory, overseas warehouse, showroom, agent or branch capability, and no overseas service countries. Service-capability assessment, approved-supplier management, corrective actions and complaint handling lack written procedures or records. R&D resources are limited to one engineer, with no new products launched in the past year, no ODM, branded OEM or SDK capability, and no quality-control test equipment reported. Raw-material traceability, quality assurance, environmental assessment and fire-drill status are unknown. Financial records are indicated for recent years, but the slices do not provide sufficient...

Supplier typeThe supplier is explicitly classified as both a Trading Company and Manufacturer/Factory, with a limited-company structure in China. Its stated business scope covers sales of general and specialized mechanical equipment, concrete additives, electromechanical products, non-ferrous metals, and instruments and meters.

After-Sales capabilityThe supplier reports one-month average lead times in both peak and off-season and accepts multiple quotation and payment terms, but it has no inventory, overseas warehouse, showroom, agent or branch capability and reports zero overseas service countries. Service-capability procedures, approved-supplier records, corrective-action records, and customer-complaint procedures are absent, indicating insufficient evidence of a controlled after-sales system.

R&D capabilityThe supplier has one R&D engineer whose stated responsibility is Technical Service, but launched no new products in the past year and does not provide ODM, branded OEM or SDK services. The evidence indicates limited documented innovation capability.

Production capacityReported annual capacities are 20,000 DTH hammers, 100,000 DTH bits, 10,000 RC hammers and 200,000 RC bits, with 11–20 quality-control staff and export coverage across multiple regions. However, the supplier reports zero quality-control test equipment, so production volume is evidenced but quality-control infrastructure is a clear weakness.

Customization capabilityThe supplier explicitly states that it provides flexible customization design services. This is direct evidence of customization capability, although no scope, process or example is provided.

Product Q&A

Q:What materials are used for the drag bits?

The blades originate from high-quality heat-treated alloy steel forgings, and the carbide inserts are individually brazed using a 50% nickel silver alloy.

Q:What formations are these bits suitable for?

These drag bits are economic drill bits used in soft formations such as sand, clay, or some soft rock. They are not well suited for rough gravel.

Q:What is the diameter range of the bits?

The diameter ranges from 3 inches (89mm) to 17.5 inches (444mm).

Q:Are customization options available?

Yes, customization is available for material (e.g., High Manganese Steel), formation type, diameter, usage, connection thread, and color (Black or Optional).

Q:What connection threads are supported?

Supported threads include 2 3/8'' Reg, 2 7/8'' Reg, 3 1/2'' Reg, 4 1/2'' Reg, 6 5/8'' Reg, and 2 7/8'' IF.