What is the warranty or quality guarantee?

All parts are heat treated for longer life, and every finished product undergoes 100% inspection.

What is the working pressure range?

Working pressure ranges from 0.7-2.5 Mpa depending on the hammer size and model.

DTH Hammer Ql40 with Foot Valve for Mining, Water Well Drilling, Quarring

Name: DTH Hammer Ql40 with Foot Valve for Mining, Water Well Drilling, Quarring
Brand: Changsha Chaojingang Machinery Manufacturing Co., Ltd.
SKU: 1903847862

Hunan, ChinaChangsha Chaojingang Machinery Manufacturing Co., Ltd.

US$490.00-580.00

1 Piece

Product profile

Customization

Available

Certification

ISO 9001:2000

Standard

JIS, ASTM

Model NO.

CQL40

Surface Treatment

Spray-Paint

Manufacturing Process

Forging

Material

Alloy Steel

Shapping

CNC Machine Shapping

Heat Treatment

Annealing

Hardness Treatment

Carburization

Transport Package

Ply-Wooden Cases for Exporting

Specification

2 Inch to 12 Inch

Trademark

Super Diamond

Origin

China

HS Code

8207199000

Production Capacity

10000

Key features

High Efficiency & Low Consumption: More efficient energy transfer, faster drilling speed, lower air and oil consumption.

Reliable Valve Air Distribution: Advanced valve design ensures more reliable operation and stable performance.

Simple Design & Long Life: Simple piston design and heat-treated parts result in longer life and less failure.

Easy Maintenance & Disassembly: Fewer internal parts and multi-sted thread connection make disassembly easy.

Full Customization Available: Supports customization from samples, designs, full customization, and minor adjustments.

ISO 9001 Certified Quality: Manufactured under ISO 9001:2000 and ISO9001:2015 management system certification.

100% Finished Product Inspection: Every unit undergoes 100% visual and function inspection before shipment.

Alloy Steel Forged Construction: Made from high-quality alloy steel with forging process and carburization treatment.

Company profile

Changsha Chaojingang Machinery Manufacturing Co., Ltd.

Hunan, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 8 Years CertifiedNearest Port: Shanghai Port; Shenzhen PortAverage Response Time: ≤5.67h

AI-Powered supplier vetting

SummaryThe supplier demonstrates product R&D, ODM, SDK availability, and broad customization capabilities, including customization from samples, designs, full customization, and minor customization. It reports eight years of export experience, export activity representing 51%–70% of total sales, self-operated import and export rights, and participation in an offline international construction machinery exhibition. Service quotations support FOB, CIF, CFR, and EXW, with a stated one-month average lead time in both peak and off-seasons. However, the supplier reports no overseas warehouse, showroom, agents, or branches, and no overseas service countries. ISO9001:2015 certification and recent fire drills are stated, but no factory environmental impact assessment report is available. Financial records provided for recent years show zero values for revenue, profit, margins, costs, and current ratios, preventing a positive assessment of financial credibility. Evidence of production scale and named customer cases is...

Supplier typeThe supplier appears to be a manufacturing-oriented rock-drilling equipment provider with R&D, ODM, SDK, export, and customization capabilities. Its products are described for earthwork, mining, water-well, construction, geothermal, and municipal engineering applications, while it does not provide OEM services for popular brands.

CertificationsThe supplier reports holding an ISO9001:2015 certificate and conducting regular fire drills during the past year. However, it also states that the factory has no environmental impact assessment report, so the evidence supports quality-system certification but not comprehensive environmental documentation.

Financial creditThe supplied financial records for the stated recent years report zero operating revenue, operating costs, gross profit, operating profit, gross margins, and current ratios. These values do not provide positive evidence of financial strength and materially limit the ability to verify financial credibility.

R&D capabilityThe supplier reports that it had new products during the past year, provides ODM services, and has an available SDK. These are explicit indicators of product development and technical integration capability.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, and minor customization. It also reports R&D capability and ODM service availability, supporting a broad customization offering.