DRILL COLLAR
Founded in 2013, Yantai Xinbaoshang Materials Technology Co., Ltd.
China's leading drill collar manufacturer and supplier
Drill Collar is a critical component in the oil and gas industry. Manufactured from high-strength steel, it features thick walls and a large diameter design, offering exceptional wear resistance and corrosion resistance, enabling reliable operation under extreme geological conditions. During drilling operations, it not only provides the necessary downforce but also effectively reduces vibration and deviation during drilling, enabling it to withstand high loads during drilling operations and ensuring drilling safety and efficiency. The connection method of the Drill Collar uses special threaded joints, enabling seamless integration with Drill Pipe and other drilling components to form a stable drilling string. This flexibility allows it to adapt to various drilling operation requirements, performing exceptionally well in both onshore and offshore environments. Each Drill Collar undergoes rigorous quality testing and complies with API standards.
Drill collars provide the necessary downward force on the drill bit, which is essential for breaking through hard rock formations and achieving a good penetration rate. Without sufficient WOB, the drill bit may not penetrate effectively, leading to slower drilling and increased costs.
The high bending resistance of drill collars helps maintain the drill string's stiffness, preventing it from bending excessively and ensuring the wellbore follows the desired trajectory. This is particularly important in directional drilling where precise control over the well path is needed.
Drill collars are placed near the bottom of the drill string, stabilizing the bit and the lower portion of the BHA, contributing to a smoother and more controlled drilling process.
The robust construction of drill collars allows them to withstand the axial, bending, and torsional stresses encountered during drilling, preventing failure and ensuring operational reliability.
Directional Drilling: Guiding and controlling the wellbore trajectory.
Deepwater Drilling: Reaching and exploring hydrocarbon reservoirs in deepwater environments.
Geothermal Drilling: Accessing geothermal energy sources.
Mining Exploration: Used in the exploration of mineral deposits.
As a leading manufacturer and supplier of drill collar products in China, our products cover most application scenarios in terms of size and standards. Our products strictly comply with international standards such as API and ASTM. If you have any other requirements for product specifications, please feel free to contact us for customization.
| Outer Diameter (OD) | Ranges from 3 1/8″ to 11″, with common sizes including 4.5″, 5″, 6.5″, and 8″. A larger OD provides more weight and stiffness. |
| Inner Diameter (ID) | Varies based on the OD and application, with common IDs ranging from 1 1/4″ to 3 1/2″. |
| Length | Typically ranges from 30 to 32 feet, with some applications requiring longer collars (e.g., 43 feet). |
| Material | Usually made of high-strength alloy steel or carbon steel. |
| Connection Type | Uses threaded connections, with API Regular (API-REG) being a common standard. Numbered Connections (NC) are also used, with the first two digits indicating the pitch diameter and the numbers to the right indicating the drill collar OD. |
| API Standards | Drill collars are manufactured to meet API specifications, particularly API Spec 7-1, ensuring quality and compatibility. |
| Other Features | Some drill collars have spiral grooves to reduce friction and allow for better cuttings removal. Non-magnetic drill collars are also available for specific applications. |
| Weight | The weight of a drill collar is a crucial factor in drilling operations, influenced by factors like formation type, well depth, and hole size. |
| Elevator and Slip Grooves | Some drill collars include elevator and/or slip grooves for handling and gripping, with specific dimensions defined by API standards. |
We have two pipe product manufacturing bases in Yantai, Shandong Province. One of them, the General Pipe Manufacturing Base, has a history of nearly 70 years and is equipped with five hot-rolling production lines and one cold-drawing production line, with an annual production capacity of up to 500,000 tons. Leveraging our mature production processes and economies of scale, our product range encompasses over 1,000 specifications of pipe products, fully compliant with international standards such as API 5L, ASTM A106, and ASTM A333. While ensuring quality, we also offer a leading price advantage.
Our high-standard pipeline product production base has a stable production capacity of 800,000 tons, primarily producing high-grade steel products such as API 5L X100 PSL2, API 5CT Super 13Cr, and ASTM A335 P91. Our product specifications cover a wide range, with a maximum outer diameter of 20 inches, a wall thickness of up to 70 millimeters, and a single-piece length of up to 36 meters, capable of meeting the demands of steel pipes in various harsh operating conditions.
FAQs
We have no minimum order quantity requirements. Even if you only need one steel pipe or one pipe fitting, we can deliver on time and provide comprehensive services. Please note that certain high-grade steel products may require temporary production scheduling, which may result in minimum order quantity requirements. For specific details, please consult our sales team.
Of course, we provide free samples for products priced below $1,000. You only need to cover the shipping costs. For products priced above $1,000, please contact our sales team to discuss specific fees.
For products that are in stock, we will complete the final processing, quality inspection, packaging, and other steps within two weeks and deliver them as soon as possible according to the shipping schedule. For products that need to be ordered for production, an additional 2-3 weeks of production time will be required depending on the quantity requested.
In addition to providing factory warranty certificates, we can also provide test reports from internationally recognized quality testing agencies such as SGS, TUV, and DNV upon customer request. We are also available to assist third-party testing agencies with process inspections and final inspections prior to shipment.
Of course! Whether it's our own factory, processing plant, or our partners' factories, we welcome you to visit and exchange ideas at any time. If you need our assistance with visa matters, please feel free to contact our sales manager.
We are both a supplier and a manufacturer. We have three processing plants and warehouses, as well as a seamless steel pipe factory. We also collaborate closely with other outstanding steel pipe and pipe fitting factories in China, enabling us to offer a wide range of product specifications and a complete product system.
The delivery of the product is just the beginning of our service. If you encounter any issues during use, please feel free to contact our online customer service team at any time, and we will address the matter promptly. Additionally, we have offices in Hong Kong, Thailand, and Malaysia, enabling us to provide on-site technical support as needed.
Resource integration and supply chain capabilities are our core strengths. We offer a wide range of product specifications and numerous product types. At the same time, our inventory and processing capabilities ensure the fastest delivery times. We also provide professional customized solutions and comprehensive after-sales service.
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A comprehensive supply chain system and resource integration capabilities are our core strengths. By establishing long-term, in-depth partnerships with numerous outstanding factories, we have built a complete product system, ensuring that you can purchase all supporting products in one place, thereby saving a significant amount of time and cost. With our deep understanding of the local market and long-term, stable procurement volume, we are able to provide the highest quality products at the same price point, helping you maintain a competitive edge in the fiercely competitive market.
We have a professional team of more than 20 people and extensive experience in international projects. We can tailor solutions to your specific needs and provide quick quotes. We have three leading steel pipe product processing plants in Yantai, Shandong and Cangzhou, Hebei, which can meet all your deep processing and customization needs.
VIEW MORE Quality is our core principle. All products undergo comprehensive quality inspections before leaving the factory. After being stored in our warehouse, we conduct rigorous secondary quality inspections and can provide specified quality inspection plans according to customer requirements. We ensure that our product quality far exceeds contract standards and international standards.
VIEW MORE With a standing inventory capacity of 35,000 tons and a leading supply chain advantage, we achieve the fastest delivery times in the industry. We have offices in Hong Kong, Thailand, and Malaysia to ensure timely after-sales support for our customers. Our goal is to establish long-term partnerships with our customers, grow together, and create greater value.
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We successfully secured a 500-ton order for seamless steel pipes with our Turkmenistan client. Through efficient land transportation, the shipment was delivered smoothly. The client highly praised our product quality and service, further solidifying our long-term cooperative relationship.
On September 3, 2025, Xinbaoshang Company hosted a warm birthday celebration for Jessica, showcasing our “people-oriented” corporate culture. We wish her both professional and personal success in the coming year!
On September 3, 2025, the military parade marking the 80th anniversary of the victory in the War of Resistance Against Japanese Aggression, held at Tiananmen Square in Beijing, not only highlighted the significant contributions made by the Chinese people in the fight against fascism but also profoundly embodied the spirit of the nation, inspiring us to remember history and look toward the future.
The United States plans to impose a 50% tariff on Indian goods starting August 27. This move stems from India’s imports of Russian oil and may have far-reaching implications for U.S.-India trade relations and the global economy.
We successfully secured a 500-ton order for seamless steel pipes with our Turkmenistan client. Through efficient land transportation, the shipment was delivered smoothly. The client highly praised our product quality and service, further solidifying our long-term cooperative relationship.
On September 3, 2025, Xinbaoshang Company hosted a warm birthday celebration for Jessica, showcasing our “people-oriented” corporate culture. We wish her both professional and personal success in the coming year!
On September 3, 2025, the military parade marking the 80th anniversary of the victory in the War of Resistance Against Japanese Aggression, held at Tiananmen Square in Beijing, not only highlighted the significant contributions made by the Chinese people in the fight against fascism but also profoundly embodied the spirit of the nation, inspiring us to remember history and look toward the future.
The United States plans to impose a 50% tariff on Indian goods starting August 27. This move stems from India’s imports of Russian oil and may have far-reaching implications for U.S.-India trade relations and the global economy.
Our steel pipe products have been widely used in major energy projects around the world, serving international energy giants, including China National Petroleum Corporation, Sinopec, Shell, Total, as well as national oil companies from countries such as Kuwait, Azerbaijan, Abu Dhabi, Qatar, Algeria, and Saudi Arabia. We have accumulated rich experience in international project services.
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