What is the typical length and diameter of the drill collar?

A typical drill collar is 30 feet long and ranges from 4 to 9 inches in diameter.

How is the product quality ensured during manufacturing?

Quality is ensured through full traceability from raw materials, die-stamped serial numbers, and inspection at every manufacturing process.

Flex Collar

Name: Non Magnetic Drill Collar/Non-Magnetic Collar/Flex Collar
Brand: Dongying Zhaoxin Industry and Trade Co, Ltd.
SKU: 2075866975

Shandong, ChinaDongying Zhaoxin Industry and Trade Co, Ltd.

US$500.00

1 Piece

Sample price:US$500.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Yes

Warranty

1 Year

Manufacturing Process

Casting

Surface Treatment

Galvanized

Operation Pressure

Atmospheric Pressure

Material

Alloy

Product Name

Drill Collar

Type

Non Magnetic Drill Collar

Transport Package

Bulk

Specification

3-1/8 3-1/2 4-1/8 4-3/4 5 6 6-1/4 6-1/2 6-3/4 7

Trademark

Origin

China

Key features

Alloy Steel Material: Constructed from P550, P540, or P530 alloy steel for high strength and durability.

Galvanized Surface: Galvanized treatment provides enhanced corrosion resistance for harsh drilling environments.

18 Months Warranty: Comprehensive 18-month warranty coverage for all products ensuring reliability.

ISO Certified Quality: Certified ISO 9001, 14001, and 45001 with full traceability and inspection processes.

Custom Thread Ends: Both ends machined with screw threads (e.g., NC23, NC31) for secure connection.

OEM/ODM Services: Full OEM and ODM services available for customized drilling equipment solutions.

Traceability System: Serial numbers die-stamped on each workpiece with full process traceability.

Company profile

Dongying Zhaoxin Industry and Trade Co, Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2014-04-14 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤11.12h CertifiedTerms of Payment: LC, T/T

AI-Powered supplier vetting

SummaryDongying Zhaoxin Industry and Trade Co., Ltd. is a China-based limited company in Shandong that manufactures and processes oilfield tools and equipment. The supplier reports ISO9001:2015, ISO14001:2015, and ISO45001:2016 certifications, a dedicated R&D team, more than 40 national patents, six to ten quality-control staff, and two production lines. It offers downhole tools, cementing tools, wellhead equipment, oil-well packers, tubing anchors, and torque anchors. The company states that it provides research, development, manufacturing, sales, and after-sales service. Export activity is documented since 2014, with markets in South America and Europe, although export sales represent only 11%–20% of total sales. Evidence is insufficient to assess financial credibility, customization capability, or specific customer cases.

Supplier typeThe supplier is a Chinese limited company engaged in manufacturing and processing machinery, specifically oilfield tools and equipment. Its stated activities cover research, development, manufacturing, sales, and after-sales service, indicating a manufacturer rather than only a trading intermediary.

CertificationsThe supplier explicitly reports ISO9000 international quality-system certification and current ISO9001:2015, ISO14001:2015, and ISO45001:2016 certificates. These certifications provide direct evidence of formal quality, environmental, and occupational-health-and-safety management systems.

After-Sales capabilityThe company explicitly states that its business includes sales and after-sales service for oilfield tools and equipment. However, the slices do not describe service coverage, staffing, response times, spare parts, or warranty terms.

R&D capabilityThe supplier reports a practical and experienced R&D team, more than 40 national patents, five years of R&D-engineer experience, and a stated focus on new products and technology. These claims directly support an established innovation function, although no patent titles or technical performance data are provided.

Production capacityThe supplier operates a manufacturing plant of 11,000 square meters, two production lines, and reports one-month order fulfillment in both off-peak and peak seasons. Its listed product scope covers multiple oilfield equipment categories, supporting production capability, although detailed capacity and equipment information is unavailable.