What payment methods are accepted?

We accept LC, T/T, PayPal, and Western Union for flexible and secure transactions.

What is the average lead time?

The average lead time is within 15 workdays, regardless of peak or off-season periods.

What certifications does the product have?

The product is certified with ISO, API 5CT, and BV standards to ensure international quality.

N80 Eue Upset Casing Coupling Sub for API Standard Oil

Name: N80 Eue Upset Casing Coupling Sub for API Standard Oil
Brand: Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
SKU: 2111110352

Tianjin, ChinaTianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.

US$23.50

1-99 Pieces

US$23.00

100-999 Pieces

US$22.00

1,000+ Pieces

Sample price:US$30.00/piece.Request sample

Product profile

Warranty

Six Months

Trademark

DFL

Origin

China

Model NO.

tubing coupling 2 7/8 NU N80-Q

Production Capacity

5000piece/Year

Key features

API 5CT Standard Compliance: Manufactured to strict API 5CT standards with ISO and BV certifications for quality assurance.

Wide Range of Grades: Available in multiple grades including N80, J55, L80, C90, T95, C110, and P110.

Customizable Dimensions: Outer diameter ranges from 60.32mm to 508mm and thickness from 4.24mm to 20.62mm.

Durable Material Options: Constructed from high-quality Alloy or Steel with cold-rolled processing for strength.

Secure Packaging: Protected by plastic packaging, wooden boxes, oil spraying, and desiccants to prevent corrosion.

Fast Lead Time: Average lead time within 15 workdays for both peak and off-season periods.

Flexible Payment Terms: Accepts LC, T/T, PayPal, and Western Union for convenient transaction options.

Six-Month Warranty: Comes with a six-month warranty to ensure product reliability and customer confidence.

Company profile

Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.Tianjin, China

Business Type: Manufacturer/FactoryExport Year: 2019-06-07Nearest Port: TIANJIN PORT, QINGDAO PORT, SHANGHAI PORTAverage Response Time: ≤15hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, EXW, CIF, DDP

AI-Powered supplier vetting

SummaryTianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd. is a China-based manufacturer founded in 1999, focused on oil pipes, pipe fittings, drilling and production tools, and petroleum automation equipment. The supplier reports ISO 9001 and ISO 14001 certification, 10 production lines, 11–20 years of R&D engineer experience, and 11–20 quality-control staff. It states that its capabilities cover design, development, manufacturing, testing, experimentation, and full-cycle service, supported by more than 30 independent intellectual property rights and an intelligent workshop. The company exports to broad global markets and reports export activity since 2019, but the provided information does not identify specific customer cases or independently verify the stated capabilities.

Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory and a limited company based in Tianjin, China. Its stated business focuses on petroleum equipment, oil pipes, pipe fittings, drilling and production tools, and automation equipment, matching the listed industrial product categories.

CertificationsThe supplier reports holding ISO 14001 and ISO 9001 management-system certifications. These are explicit certification records in the provided data, although certificate scope and validity dates are not given.

R&D capabilityThe supplier reports more than 30 independent intellectual property rights, an intelligent workshop, numerical-control automation equipment capabilities, an e-commerce platform, and recognition as a national science and technology-based small and medium-sized enterprise. These statements provide explicit evidence of innovation-related infrastructure and activity.

Production capacityThe supplier describes an integrated chain covering design, development, manufacturing, testing, and experimentation; operates 10 production lines; and has an intelligent workshop. It also reports oil equipment and pipe-related manufacturing experience, with stated order fulfillment within 15 workdays in both off-peak and peak seasons, supporting a positive production-capability assessment.

Customization capabilityThe stated full-cycle integration of design, development, manufacturing, testing, and experimentation, together with numerical-control automation equipment and an intelligent manufacturing model, indicates the ability to develop and manufacture tailored petroleum equipment. However, no specific customized project examples, engineering-change process, or minimum-order requirements are provided.