Which port do you ship from?

We usually ship containers from Shanghai port, though Guangzhou port is also available.

Why should I choose CJG DRILL?

We have 17+ years of experience, high quality compatible with major brands, unbeatable prices, and excellent service.

Wholesale Rock Drilling Mining M4 4 Inch Middle Pressure DTH Hammer

Name: Wholesale Rock Drilling Mining M4 4 Inch Middle Pressure DTH Hammer
Brand: Changsha Chaojingang Machinery Manufacturing Co., Ltd.
SKU: 1958959602

Hunan, ChinaChangsha Chaojingang Machinery Manufacturing Co., Ltd.

US$50.00-1,000.00

1 Piece

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

Certification

ISO 9001:2000, ISO 9001:2008

Surface Treatment

Spray-Paint

Manufacturing Process

Forging

Material

Alloy Steel

Connection Thread

API 3 1/2" Reg

Hole Range

Dia 155 - 190 mm

Working Pressure

1.0 - 2.5MPa

Compatible Bit Shank

Mission60 / Cm60A

Transport Package

Ply-Wooden Cases for Exporting

Specification

2 inch to 12 inch

Trademark

Super Diamond

Origin

China

HS Code

8207199000

Key features

High Compatibility: Matches over 95% of original products from brands like Atlas Copco and Ingersoll Rand.

Foot Valve Free Design: Eliminates valve breakage risks, offering 15-30% higher drill speed and lower energy consumption.

Competitive Pricing: Offers best quality against small factories with unbeatable prices compared to famous brands.

Customization Options: Accepts customized connection threads, hole ranges, working pressures, and compatible bit shanks.

Low Maintenance Cost: Simple design with reliable parts ensures easy and cheap maintenance with long service life.

Oil Efficiency: Reduces oil consumption by around 10% compared to hammers equipped with foot valves.

Quality Assurance: Made of high-quality alloy steel with premium hardened procedures and strict spare parts inspection.

Global Reputation: Trusted by customers worldwide including France, Spain, Italy, South Africa, and Australia.

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: ≤1.59h

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.