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 50 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 has more than 160 sets equipment like turning, grinding, milling, drilling, welding, wire cutting, machining center, HVOF, CNC and other mechanical equipment，and more than 30 sets of professional testing equipment，Such as CMM，UTM，Brinell/Rockwell/Micro Vickers Hardness Tester，Plane detector,Roughness detector, Digital coating thickness gauge and Ultrasonic flaw detector, To fully ensure the product quality and performance.

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.