What payment terms do you accept?

We accept LC and T/T payment terms.

Is after-sales service provided?

Yes, after-sales service is available for this product.

What is the maximum OD size available?

The maximum tubing coupling OD is 4.5 inches.

Oilfield 2-7/8 Eue N80 Tubing Coupling

Name: Oilfield 2-7/8 Eue N80 Tubing Coupling
Brand: Dongying Zhaoxin Industry and Trade Co, Ltd.
SKU: 2243157875

Shandong, ChinaDongying Zhaoxin Industry and Trade Co, Ltd.

US$5.00

1 Piece

Product specifications

tubing coupling

Sample price:US$5.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Yes

Warranty

1 Year

Model NO.

2-7/8

Manufacturing Process

Casting

Surface Treatment

Galvanized

Operation Pressure

Atmospheric Pressure

Material

Alloy

Transport Package

Wooden Case

Specification

2-3/8'', 2-7/8'', 3-1/2'', 4'', 4-1/2''

Trademark

Origin

China

HS Code

7304291000

Production Capacity

1000 PCS Per Month

Key features

Comprehensive Size Range: Available in 2-3/8, 2-7/8, 3-1/2, 4, and 4-1/2 inch sizes.

Multiple Grade Options: Offered in J55, K55, N80, L80, and P110 grades.

EUE and NUE Types: Features Internal Upset (EUE) and Non-Upset (NUE) connection types.

Galvanized Surface: Surface treatment includes galvanization for enhanced corrosion resistance.

Casting Manufacturing: Produced using high-precision casting manufacturing processes.

Custom Sizes Available: Other sizes and connections available upon request.

OEM and ODM Services: Full OEM and ODM services available for custom requirements.

ISO Certified Quality: ISO-9001, ISO-14001, and OHSAS-18001 certified manufacturer.

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: ≤15h 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.