Founded in December 2003, Suzhou Tongli Machinery Co., Ltd. in Xiangcheng District is a comprehensive petroleum equipment parts manufacturer and HVOF (High Velocity Oxygen Fuel) coating solution provider, integrating R&D, production, sales, and service. With over 40 employees, the company has established a professional team known for its technical expertise and innovation spirit. Since obtaining Bureau Veritas ISO 9001 quality management system certification in 2022, it has acquired the American Petroleum Institute (API) API 6A Wellhead Equipment and Christmas Tree certification in July 2026, with product capabilities covering：Casing and Tubing Heads, Chokes, Cross-Over Connectors, Blind and Test Flanges, Tees and Crosses, Top Connectors, Adapter Spools and Spacer Spools, Mandrel-Type Hangers, Gate, Ball, Plug Valves at PSL 1, PSL 2, PSL 3; Ring Gaskets.

The company is equipped with more than 50 sets of processing equipment such as lathes, grinders, milling machines, drills, welders, wire cutting, machining centers, CNC machines and thermal spraying equipment. It also has more than 10 sets of professional measuring and testing equipment including flatness detectors, roughness detectors, digital coating thickness gauges and ultrasonic flaw detectors, with strong hardware strength to ensure product quality and performance from the source.

The company mainly engages in various mechanical processing and supersonic HVOF thermal spraying services, focusing on tungsten carbide metal coating surface hardening treatment technology. Its products are widely used in high-pressure valves for oil pipelines, pressure-bearing parts and other fields, which can meet the performance requirements of oil and gas sealing such as density, hardness, bonding strength, wear resistance and galling resistance. We can customize solutions for various metal manufacturing and processing technical problems according to customer needs, and win customer trust and long-term cooperation with professional strength.