Are you an API certified manufacturer?

Yes, we hold the API 5CT certificate authorized by the American Petroleum Institute.

What payment methods do you accept?

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

What is the material used for the coupling?

The coupling is manufactured from high-quality seamless steel with excellent mechanical properties.

API 5CT Tubing and Casing Coupling Crossover or X-Over Coupling2-3/8 2-7/8 3-1/2

Name: API 5CT Tubing and Casing Coupling Crossover or X-Over Coupling2-3/8 2-7/8 3-1/2
Brand: Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
SKU: 2124647772

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

US$13.69

50 Pieces

Sample price:US$20.69/piece.Request sample

Product profile

Warranty

1 Year

Name

API 5CT Tubing and Casing Coupling Crossover or X-

Thread

Nu EU Bc LC Sc

Grade

K55 J55 L80-1 N80q P110

Length

203.2mm

Transport Package

Wooden Box

Specification

2-3/8 2-7/8 3-1/2

Trademark

EASTLONG

Origin

Puyang China

Production Capacity

500 PCS One Day

Key features

API 5CT Certification: Authorized by American Petroleum Institute with ISO9001, ISO14001, ISO45001, and HSE certifications.

Wide Grade Range: Available in J55, K55, L80, N80, and P110 grades to meet diverse drilling needs.

Customizable Lengths: Lengths are fully customizable as requested by customers to fit specific project requirements.

Seamless Steel Construction: Made from high-quality seamless steel ensuring excellent mechanical properties and durability.

Hot Rolling Process: Hot rolling ensures well-proportioned and consistent metallographic structure for superior strength.

Versatile Connections: Supports EUE, NUE, STC, LTC, and BTC connections for various tubing and casing combinations.

Global Export Reach: Products exported to 31 countries including USA, Russia, and UAE with established trade alliances.

1-Year Warranty: Comes with a standard 1-year warranty covering mechanical defects and manufacturing issues.

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.