| After-sales Service: | Replacement Within Warranty |
|---|---|
| Warranty: | Three Months |
| Certification: | API |
|
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Our 2 7/8" P110 tubing couplings are manufactured in accordance with API 5CT standards, specifically engineered to connect tubing pipes in oil and gas wells. Made from P110-grade quenched and tempered steel, these couplings offer superior strength, pressure resistance, and sealing performance for demanding oilfield operations.
(Custom grades, coatings, and threads available upon request)
| Parameter | Specification |
|---|---|
| Outer Diameter (OD) | 2 7/8" (73.02 mm) |
| Steel Grade | P110 |
| Standard | API 5CT |
| Thread Type | NUE / EUE (Optional) |
| Coupling Length | Standard tubing coupling length |
| Material | Quenched and tempered alloy steel |
| Surface Treatment | Phosphated / Black / Plain |
| Connection Type | Tubing to Tubing |
| Application | Oil and gas well tubing connection |
Material: API P110 high-strength carbon steel
Thread Options: NUE and EUE threaded types available
Heat Treatment: Quenching & tempering for enhanced mechanical properties
Thread Protection: Plastic caps included for each piece
Inspection: 100% thread gauge check, MPI, hydro test optional
Finish: Phosphating or black painting to prevent corrosion
Oil Production Tubing - Seamless downhole tubing systems
Gas Extraction Projects - High-pressure gas well installations
Petroleum Engineering - API 5CT casing/tubing systems
Pipeline Field Maintenance - Repair and joint coupling
Well Completion - Standard oilfield tubular operations
Standard Warranty: 3 months from delivery or per contract
Extended Warranty: Optional with inspection & report support
Global Support: 24/7 communication and technical support
Customization: Dimensions, grades, and coating available per spec
Technical drawings, cross-sections, and thread profiles are available for download or on request. Our engineering team supports CAD or 3D data modeling per order.
DFL Petroleum Equipment Co., Ltd.
Henan Dongfanglong Machine Manufacture Co., Ltd was established in 1999 and is a national high-tech enterprise concentrating on petroleum specialized pipes, petroleum specialized drilling and production tools, and petroleum specialized automation equipment. The company has 46 engineers and highly skilled talents, over 50 independent intellectual property rights, and have created the industry's first professional e-commerce platform, the "Dongfang Yunlong E-commerce Platform". It has formed an industrial chain that integrates the design, research and development, manufacturing, sales, testing and experimentation,and technical services of petroleum machinery products and CNC automation equipment, which can meet customers' full cycle service needs for products.
Since its establishment, the company has successively passed the ISO9001 quality system, ISO14001 environmental management system, ISO45001 occupational health and safety management system certification, HSE health, safety and environmental management system certification, and integration management system certification. In 2007, the company obtained the API 5CT certificate authorized by the American Petroleum Institute and the quality supplier assessment certificate issued by BV France. With excellent system management and quality control, Dongfanglong won the "Mayor of Puyang City Quality Award";
The company takes the "Dongfang Yunlong E-commerce Platform" as its core and promotes it through multiple platforms, successfully building a petroleum equipment industry alliance and conducting domestic and international trade. Dongfanglong utilizes a large digital platform as its carrier to fully integrate customer resources, analyze customer types, expand business types, and conveniently and quickly complete cross-border electronic business. It aims to focus on the company's proprietary products, drive the sales of petroleum machinery in the industry, and quickly occupy and expand the market share of petroleum machinery products through e-commerce platform sales. By continuously cultivating and introducing sales elites, improving the official website sales platform, and increasing international promotion investment, our products are exported to 31 countries and regions such as the United States, Russia, and the United Arab Emirates.
In the future, Dongfanglong will solidly implement the new development concept, guided by the new development concept of innovation, coordination, green, openness, and sharing. It will closely focus on national policy guidance, formulate a sustainable development transformation strategy, anchor the goal of becoming a century old enterprise and striving for national glory, continuously forge ahead, and work together with people of insight from all walks of life to achieve win-win results, jointly building the dream of soaring petroleum equipment manufacturing.
Q: What's your MOQ for tubing couplings?
A: Minimum order is typically 100 pieces per size/grade.
Q: Are your couplings compatible with American and European tubing?
A: Yes. All threads follow API 5CT dimensions and tolerances.
Q: Can I customize the steel grade or finish?
A: Absolutely. P110, J55, N80, L80 and coatings (black, phosphated, zinc) are available.
Q: How do you ship the couplings?
A: Packed in wooden cases or steel pallets with thread protectors.
Q: What documents do you provide?
A: Packing List, Commercial Invoice, Mill Test Certificate (MTC), and Certificate of Origin.
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