What is the lead time for orders?

The average lead time is within 15 workdays for both peak and off-season periods.

How are the goods packaged?

Goods are bundled on fumigated wooden pallets or packed into plywood cases for long-distance transport.

API 5CT Uncoated Steel Casing & Tubing Coupling, Raw Machined Coupling

Name: API 5CT Uncoated Steel Casing & Tubing Coupling, Raw Machined Coupling
Brand: Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
SKU: 2185269332

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

US$25.00

10 Pieces

Product profile

After-sales Service

Yes

Warranty

1year

Manufacturing Process

Phosphating

Model NO.

5-1/2"

Surface Treatment

Green Paint

Operation Pressure

Atmospheric Pressure

Material

Phosphating

Transport Package

Wooden Pallets

Specification

2-7/8"

Trademark

EASTLONG

Origin

Tianjin, Henan

Key features

Manufactured strictly in accordance with API 5CT standard. Precision CNC internal thread, excellent interchangeability and reliable sealing under downhole high pressure.

Made of high-quality steel blank with stable mechanical performance, great collapse resistance, suitable for onshore and offshore oil & gas exploitation.

Finished with green anti-rust coating, effectively preventing rust during transportation and long-term storage. Finished goods, ready for direct shipment.

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.

Product Q&A

Q:What steel grades are available?

We offer N80, L80, and P110 steel grades to ensure high tensile and compressive resistance.

Q:What thread types are supported?

For casing, we support STC, LTC, and BTC threads; for tubing, EUE and NUE threads are optional.

Q:Is OEM service available?

Yes, custom sizes and OEM service are acceptable to meet your specific processing requirements.

Q:What is the warranty period?

We provide a 1-year warranty and offer comprehensive after-sales service support.

Q:What are the payment terms?

We accept LC, T/T, PayPal, and Western Union as terms of payment.

Send Inquiry

*To:

Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.

*Content:

0/4000

Supplier replies will be sent to your registered email

API 5CT Uncoated Steel Casing & Tubing Coupling, Raw Machined Coupling