Dalian Ruiheng Machinery Manufacturing Co., Ltd

Dalian Ruiheng Machinery Manufacturing Co., Ltd (大连瑞恒机械制造有限公司) is a specialized Chinese manufacturer of internal blowout prevention (IBOP) tools and drill stem components for the oil and gas drilling industry. Founded in 2006 and headquartered in Jinzhou District, Dalian, Liaoning Province, the company operates a 5,800 square meter facility with registered capital of 50 million RMB. The company draws on more than 30 years of combined practical experience in producing internal blowout preventer products and has a dedicated technical R&D team developed in partnership with Dalian University of Technology's School of Materials Engineering. Ruiheng holds API certification (Spec 7-1 for Rotary Drill Stem Elements and Spec 7-2 for Threading and Gauging of Rotary Shouldered Connections) as well as ISO 9001:2015 quality management, ISO 45001:2018 occupational health and safety, and ISO 14001:2015 environmental management certifications. The company is an approved supplier within both CNPC (PetroChina) and Sinopec procurement networks and has earned PetroChina and Sinopec HSE system certifications. Core products include hydraulic and manual top drive plug valves (IBOP), kelly cocks, drilling tool float valves, and arrow-shaped check valves. Ruiheng manufactures compatible products for major top drive brands including NOV/VARCO, Beishi (North Stone), Tianyi, Jinghong, Honghua, TESCO, Yongming, and Zhongdi Zhuang. A notable product line is the 140 MPa ultra-high pressure IBOP jointly developed with Dalian University of Technology. Products have been deployed in high-profile well programs including CNPC's 11,000-meter deep well project (Ditako 1) and China-Ukraine Belt and Road cooperation wells. Export markets include UAE, Saudi Arabia, Iran, Oman, Kazakhstan, Egypt, Mexico, Venezuela, Russia, and the United States.