Casing Short Joint, Oil and Gas Pipeline Short Connector, Quick Connect Oil Pipe, Small pop joint Connector, Deep Well Operation Oil Short Joint

## Oil Pipe Coupling

 Introduction

The Oil Pipe Coupling is an essential component in the oil and gas industry, providing secure connections between oil pipes. Manufactured by Tianjin Longkai Lai Company, this coupling is designed for strength, durability, and ease of installation. The oil pipe coupling plays a vital role in ensuring the integrity of the pipeline system, allowing for the safe and efficient transportation of hydrocarbons.

Oil pipe couplings are critical in connecting sections of pipe, facilitating the flow of oil and gas from the wellhead to processing facilities. The design and material selection of these couplings are crucial for maintaining the performance and reliability of the entire pipeline system.

 Specifications

The specifications of the Oil Pipe Coupling are tailored to meet the diverse needs of the oil and gas industry. Key specifications include:

 Connection Type: Standard threaded or welded connections. The choice between threaded and welded connections allows for flexibility in installation, depending on the specific requirements of the pipeline.

 Material: Alloy steel or stainless steel for enhanced corrosion resistance. The material selection is critical for ensuring that the coupling can withstand the harsh conditions often encountered in oil and gas applications.

 Pressure Rating: Suitable for pressures up to 10,000 psi. This highpressure rating allows the coupling to be used in demanding environments where the integrity of the connection is paramount.

 Size Range: Available for various pipe diameters from 2.375 inches to 20 inches. This versatility ensures that the oil pipe coupling can be used in a wide range of applications.

 Special Features

Our Oil Pipe Couplings are designed with several key features:

# 1. HighStrength Materials

The couplings are constructed from highstrength materials, ensuring they can withstand extreme pressure and temperature conditions. This strength is essential for maintaining the integrity of the pipeline system.

# 2. AntiCorrosion Coatings

To prolong service life, the couplings are treated with anticorrosion coatings that protect against environmental factors. This coating enhances the durability of the coupling, reducing maintenance costs over time.

# 3. Versatile Compatibility

The oil pipe coupling is designed to work with a variety of pipe sizes and types. This versatility allows for easy integration into existing systems, ensuring a secure connection regardless of the specific requirements.

 Pricing Advantage

Tianjin Longkai Lai Company prides itself on offering highquality oil pipe couplings at competitive prices. Our efficient manufacturing processes and bulk production capabilities enable us to provide costeffective solutions without sacrificing quality.

By maintaining a robust supply chain and investing in advanced manufacturing technologies, we can produce highquality couplings at lower costs. This pricing advantage is essential for our customers, who often operate in competitive markets where cost efficiency can significantly impact overall project budgets.

 Applications

The Oil Pipe Coupling is suitable for:

# 1. Connecting Oil and Gas Pipelines

The primary function of the oil pipe coupling is to create secure connections in transportation systems. This is essential for ensuring the safe and efficient flow of oil and gas from production sites to processing facilities.

# 2. Deep Well Drilling Applications

In deep well drilling, the oil pipe coupling provides reliable connections in challenging environments. Its strength and durability are critical for maintaining the integrity of the pipeline system under highpressure conditions.

# 3. Offshore Oil Platforms

The oil pipe coupling is effective in marine environments where durability is crucial. Its corrosionresistant properties ensure that it can withstand the harsh conditions often encountered offshore.

# 4. Applications Requiring Secure Connections

In situations where maintaining the integrity of the oil and gas flow is vital, the oil pipe coupling plays a crucial role. Its design ensures that connections remain secure, minimizing the risk of leaks that could lead to environmental hazards.

 Quality Control

Our commitment to quality is evident in our stringent quality control processes, including:

# 1. Incoming Material Inspection

All raw materials are thoroughly inspected for compliance with specifications. This ensures that only highquality materials are used in the production of oil pipe couplings.

# 2. InProcess Quality Checks

Continuous monitoring during production helps maintain high standards. This proactive approach allows us to detect and resolve any issues that may arise promptly.

# 3. Final Product Testing

Each coupling undergoes rigorous testing, including dimensional checks and pressure tests. This comprehensive testing ensures that the oil pipe couplings meet the required specifications for performance and reliability.

 Conclusion

Choose the Oil Pipe Coupling from Tianjin Longkai Lai Company for a reliable and efficient solution to your oil and gas pipeline needs. Our focus on quality and customer satisfaction ensures that you receive a product designed to meet the challenges of the industry.

Tianjin  Grand Victory Petroleum Equipment Co., Ltd. is a comprehensive enterprise for production, processing, sales, technology research and development, and spot storage. Located in Jinghai District, Tianjin, China, it was founded in 2008 with a registered capital of 11.18 million yuan. It has import and export rights, ISO9001 quality system certification, American Petroleum Institute API 5CT certification and a number of national patent certificates. The production workshop is equipped with several types of equipment such as highprecision CNC lathes, thread tightening machines, hydraulic presses, etc., and complete inspection and measurement instruments. Products include J55, K55, N801/Q, L80, P110 and other oil casing, couplings, Pup Joint、Xover （Cross over）; 80S, 90S, 110S, L801Cr/3Cr/13Cr and other highcorrosion resistant oil casing spot storage, with a longterm reserve of about 2,000 tons. At the same time, it undertakes the processing and copper plating of special sealing threads such as direct connection, wedge shape, double step, variable pitch, etc. for oil well pipes and petroleum accessories, with fast delivery and excellent quality, reducing costs and increasing efficiency for customers.  Our vision: to build an international oil pipeline equipment enterprise with integrity and innovation. We welcome leaders and friends from all walks of life to visit us for cooperation and common development.

Advantages/Features:

1.Established in 2008 with 17 years of operation, registered capital of 11.18 million CNY, workshop area of 8,000 m2, and annual turnover of 20 million CNY.

2.Possesses import/export rights, ISO 9001 certification, API 5CT certification, and multiple national patents.

3.Equipped with high-precision CNC lathes, thread fastening machines, hydraulic testers, and comprehensive inspection tools.

4.Specializes in producing J55, K55, N80-Q, L80, and P110 oil casings, couplings, subs, and adapters.

5.Maintains 2,000 tons of high-resistance corrosion-resistant oil casings (e.g., 80S, 90S, 110S, L80-1Cr/3Cr/13Cr) in stock.

6.Offers custom threading (e.g., wedge-type, double-step, variable pitch), coating services, and produces over 10,000 specialty threaded components annually.

?Product Name?: API-5CT Seamless Casing and Tubing
?Steel Grade?: J55, N80, P110, H40, K55, L80, L80-3Cr/9Cr/13Cr,  M65, C90, T95, Q125
?Material?: 34CrMo4, H40, J55, K55, N80, L80, M65, C90, T95, P110, Q125
?Standard?: API 5CT/ISO 11960
?Technique?: Cold Drawn/Hot Rolled
?Application?: Oil and Gas Pipes

?Outer Diameter Ranges?:

• ?Tubing?: 48.26mm~114.3mm (1.05 inches~4 1/2 inches)

• ?Casing?: 114.3mm~762mm (4 1/2 inches~30 inches)
  ?Wall Thickness?: 2.87mm~30mm (compliant with API 5CT standards)
  ?Length Ranges?:

• ?Tubing?:

• R1: 6.10m~7.32m

• R2: 8.53m~9.75m

• R3: 11.58m~12.80m

• ?Casing?:

• R1: 4.88m~7.62m

• R2: 7.62m~10.36m

• R3: 10.36m~14.63m
  ?End-Finish Types?:

• ?Tubing?: P, I, N, U

• ?Casing?: P, S, B, L

?Product Features?:

1. ?Material Optimization?:

• Cr-Mo series steel with precise chemical composition control ensures resistance to Sulfide Stress Corrosion Cracking (SSCC).

• Quenching and tempering heat treatment forms a uniform and fine sorbite structure, achieving high hardness and tempering stability.

2. ?Heat Treatment Process?:

• Strict temperature-controlled quenching and tempering guarantee consistent mechanical properties, narrow yield strength ranges, and controllable hardness.

3. ?Sulfide Corrosion Resistance?:

• Microstructure of fully tempered martensite is suitable for H?S-containing acidic oil and gas environments.

• Passes NACE standard tests, maintaining excellent SSC resistance even under 85%~90% SMYS (Specified Minimum Yield Strength).

?Inspection Standards?:

• ?Non-destructive Testing?:

• Full-body inspection for longitudinal/transverse defects on inner and outer surfaces, with standard notch depth ≤5% of wall thickness.

• Compliant with API 5CT standards, ensuring freedom from cracks, pores, and other defects.

?Packaging & Delivery?:

• ?Packaging?: Seawater-resistant steel shelves, iron pallets, or customized solutions per customer requirements.

• ?Delivery Time?: 20–55 days (varies based on order size and process complexity).

• ?Minimum Order Quantity (MOQ)?: 20 tons.

?Application Scenarios?:

• ?Sour Oil and Gas Fields?: High-corrosion environments with H?S and CO?.

• ?Deep/Ultra-Deep Wells?: Resistant to high pressure and temperatures (up to 200°C+).

• ?Cementing and Workover?: Supports wellbore stability and isolates formation fluids.

?Certification & Surface Treatment?:

• ?Certification?: API pipe certification.

• ?Surface Treatment?: Black paint, varnish coating; cross-sectional shape: round.

• ?Origin?: China.

?Note?: This product is non-secondary processed and supports customization. Contact the supplier for technical agreements.

Tianjin  Grand Victory Petroleum Equipment Co., Ltd. is a comprehensive enterprise for production, processing, sales, technology research and development, and spot storage. Located in Jinghai District, Tianjin, China, it was founded in 2008 with a registered capital of 11.18 million yuan. It has import and export rights, ISO9001 quality system certification, American Petroleum Institute API 5CT certification and a number of national patent certificates. The production workshop is equipped with several types of equipment such as highprecision CNC lathes, thread tightening machines, hydraulic presses, etc., and complete inspection and measurement instruments. Products include J55, K55, N801/Q, L80, P110 and other oil casing, couplings, Pup Joint、Xover （Cross over）; 80S, 90S, 110S, L801Cr/3Cr/13Cr and other highcorrosion resistant oil casing spot storage, with a longterm reserve of about 2,000 tons. At the same time, it undertakes the processing and copper plating of special sealing threads such as direct connection, wedge shape, double step, variable pitch, etc. for oil well pipes and petroleum accessories, with fast delivery and excellent quality, reducing costs and increasing efficiency for customers.  Our vision: to build an international oil pipeline equipment enterprise with integrity and innovation. We welcome leaders and friends from all walks of life to visit us for cooperation and common development.