How are the products packaged?

Products are packed in carton boxes with foam, then placed in plywood cases or pallets. Customized packaging is also acceptable.

What is the warranty policy?

Products are made of high-quality steel, and all spare parts are strictly inspected before shipping. We provide quick responses to complaints and suggestions.

What materials are used for manufacturing?

The drill collars are manufactured from alloy steel using a forging process with premium hardened procedures.

Barras De Perforacion RC, Drill Collars RC, Pr52 RC Marteau 4 "Metzke

Name: Barras De Perforacion RC, Drill Collars RC, Pr52 RC Marteau 4 "Metzke
Brand: Changsha Chaojingang Machinery Manufacturing Co., Ltd.
SKU: 1962696842

Hunan, ChinaChangsha Chaojingang Machinery Manufacturing Co., Ltd.

US$30.00-300.00

1 Piece

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, API 3 3/8" Reg

Hole Range

Dia 135 - 155 mm

Working Pressure

1.0 - 2.5MPa

Compatible Bit Shank

Cop54, DHD350, CD55, Ql50, Mission50, SD5

Transport Package

Ply-Wooden Cases for Exporting

Specification

2 inch to 12 inch

Trademark

Super Diamond

Origin

China

HS Code

8207199000

Key features

Customizable Design: Customize connection thread, hole range, working pressure, and compatible bit shank.

Premium Material Quality: Made of high-quality alloy steel with premium hardened procedures for long life.

ISO 9001 Certified: Manufacturing process certified under ISO 9001:2000 and ISO 9001:2008 standards.

Experienced Engineering: Technicians and engineers with over 15 years of field experience ensure accuracy.

Stable Production Lead Time: Full production chain secures stable and prompt lead times of 15-30 days.

100% Quality Inspection: All spare parts are strictly inspected before shipping to ensure premium quality.

Flexible Packaging: Standard carton and plywood cases; customized packaging is acceptable.

Global Reputation: Trusted by customers worldwide including Brazil, Peru, 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: ≤1.55h

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.

Product Q&A

Q:Can the drill collars be customized?

Yes, we offer full customization including connection threads, hole range, working pressure, and compatible bit shanks based on customer requirements.

Q:What is the production lead time?

Generally, the production lead time is 15-30 days. Peak season and off-season lead times are approximately one month.

Q:What is the minimum order quantity?

The minimum order quantity is 1 piece.

Q:What payment terms are accepted?

We accept LC, T/T, PayPal, Western Union, and small-amount payments.

Q:What certifications does the product have?

The product is certified under ISO 9001:2000 and ISO 9001:2008 standards.