What are the main features of this coupling?

It features a tapered thread design to prevent fatigue fracture and ensure effective connection.

What are the available shipping terms?

We offer FOB, EXW, CIF, and DDP international commercial terms.

Where is the product manufactured?

The product is manufactured by Tianjin Dongfanglong Machine Manufacture Co., Ltd. in Tianjin, China.

API 5CT Oil Pipe Coupling EU Nu K55 J55 L80 N80 Coupling2-3/8

Name: API 5CT Oil Pipe Coupling EU Nu K55 J55 L80 N80 Coupling2-3/8
Brand: Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
SKU: 2043802122

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

US$3.90

200 Pieces

Sample price:US$10.00/piece.Request sample

Product profile

Warranty

1 Years

Certification

API 5CT

Name

API 5CT Oil Pipe Coupling EU Nu K55 J55 L80 N80 Co

Model NO.

2-3/8

Grade

K55 J55 L80 N80 P110

Thread

EU Nu

Usage

Oil Pipe

Transport Package

Wooden Pallet

Trademark

EASTLONG

Origin

Puyang China

HS Code

7307990000

Production Capacity

5000 PCS One Day

Key features

API 5CT Certified Quality: Certified by API 5CT, ISO9001, and BV Quality supplier evaluation.

Fatigue Fracture Prevention: Tapered thread connection prevents fatigue fracture and pipe string breaks.

Multiple Grade Options: Available in K55, J55, L80, N80, and P110 grades to match pipe body.

Versatile Connection Types: Supports EUE (EU Nu) and NUE (NU) connections for various tubing sizes.

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

Full Cycle Service: Integrated design, development, manufacturing, testing, and experiment.

1-Year Warranty: Comprehensive 1-year warranty coverage for all purchased couplings.

Global Export Capability: Exports to North America, Europe, Asia, Africa, and Oceania via major ports.

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.