Import Api Vacuum Insulated Tubing — Buy in Bulk from Supplier in China

API vacuum insulated tubing from Dongying Lake Petroleum Technology Co., Ltd is a pre-stressed double-wall tubular system designed to minimize heat transfer in steam injection and heavy oil recovery operations. The inner and outer tubes are pre-stressed to compensate for thermal expansion, ensuring structural integrity under high-temperature differentials. The annulus between the tubes is packed with gas-absorbing materials to eliminate harmful gases and maintain long-term thermal insulation performance.

The tubing is constructed from API-compliant steel grades, with typical outer diameters ranging from 2 3/8 inches to 4 1/2 inches and lengths up to 12 meters, depending on well depth requirements. Standard wall thicknesses for the inner tube are between 4.83 mm and 7.32 mm, while the outer tube typically uses heavier walls of 6.45 mm to 9.53 mm to withstand external pressures. The vacuum insulation reduces heat loss to less than 5% over 1000 meters, a critical factor for maintaining steam quality in thermal enhanced oil recovery (EOR) projects.

This product is primarily used in heavy oil fields where steam injection is required to reduce viscosity and improve flow rates. Buyers are typically EOR operators, oilfield service companies, and drilling contractors working in high-temperature, high-pressure (HTHP) environments. The tubing is supplied in single or double joints with threaded and coupled connections, and lead times are confirmed with the supplier. Standard packaging includes wooden crates or steel skids to prevent damage during transport.

Dongying Lake Petroleum Technology Co., Ltd is based in Huanghe Road, Dongying, Shandong Province, China, a region known for its concentration of oilfield equipment manufacturers. The company specializes in thermal recovery solutions, including vacuum insulated tubing and related downhole tools for enhanced oil recovery operations. Its address places it within China’s second-largest oilfield, the Shengli Oilfield, a hub for petroleum technology development.

The supplier is categorized as an imported-tier provider with a harbor trust tier, indicating a baseline level of verification for international trade. While the listed response rate and average response time are currently at zero, this reflects a lack of recent activity on the platform rather than operational capacity. The company’s focus is on API-compliant products for high-temperature applications, and its product descriptions emphasize engineering solutions for heat retention and structural reliability in demanding oilfield environments.