In recent years, as the localization of China's energy equipment has accelerated, the bottleneck issues surrounding key equipment in oil and gas fields are gradually being resolved. Sinopec Zhongyuan Oilfield Puguang Branch has actively promoted the domestic substitution of critical equipment, achieving significant progress in the field of corrosion inhibitor injection pumps. This has driven a steady shift from "reliance on imports" to "independent control" of core equipment, providing strong support for the safe and stable operation of high-sulfur gas fields. As one of China's major large-scale high-sulfur gas fields, the Puguang Gas Field features a production environment characterized by high corrosiveness, high pressure, and complex media, imposing extremely high demands on the stability and reliability of the corrosion inhibitor injection system. The corrosion inhibitor injection pump, a key piece of equipment in the gas field's gathering, transportation, and processing systems, is primarily responsible for the precise delivery of corrosion inhibitors to reduce the risk of corrosion in pipelines and equipment under acidic media conditions. Any instability in the pump's operation would impact the safety of the entire gas field's production. In the past, high-end corrosion inhibitor injection pumps were long dependent on imported products, which not only involved long procurement cycles and high maintenance costs but also left spare parts supply and technical services at the mercy of foreign manufacturers. To address this issue, Puguang Branch collaborated with domestic equipment manufacturers to tackle key technologies such as high-precision metering, corrosion-resistant materials, sealing reliability, and continuous stable operation, continuously improving the performance and adaptability of domestic equipment. Through on-site operational verification, domestic corrosion inhibitor injection pumps have proven capable of meeting the long-term stable operation requirements under high-sulfur conditions, with notable improvements in flow control accuracy, equipment reliability, and maintenance convenience. Moreover, the domestic substitution has not only effectively reduced procurement and maintenance costs but also further strengthened the supply chain security of key equipment in China's oil and gas industry. In the future, as the manufacturing level of China's high-end pump equipment continues to improve, more critical equipment in the petroleum and petrochemical sectors will achieve localization breakthroughs, providing solid support for the green, safe, and high-quality development of the energy industry. Jiangsu Haifa Machinery Manufacturing Co., Ltd. was restructured from Jiangsu Ligong Group Co., Ltd., which was established in 1958, and the Jingjiang Stainless Steel Pump and Valve Plant of the Central Iron and Steel Research Institute of the Ministry of Metallurgical Industry. It primarily produces API610 chemical process pumps - OH1 pumps, OH2 pumps, OH3 pumps, OH4 pumps, BB1 pumps, BB2 pumps, BB3, BB4, BB5 multistage pumps, VS1, VS4 VS5, VS6 barrel casing pumps, HES-type chemical process pumps, chemical pumps, sixth-generation ultra-low carbon stainless steel high-quality leak-proof molten urea pumps, urea hydrolyzer feed pumps, high-temperature asphalt pumps, pitot tube pumps, rotary jet pumps, molten salt pumps, vertical submerged pumps, magnetic drive pumps, high-temperature nitric acid magnetic drive pumps, magnetic drive pumps for conveying solid-containing media, industrial pumps, canned motor pumps, slurry pumps, titanium tetrachloride pumps, strong self-priming pumps, lined fluorine pumps, sandwich lined fluorine pumps, leak-proof pumps, alkali pumps, pumps, oil pumps, axial flow pumps, Ti alloy pumps, forced circulation pumps, special pumps for filter presses, long-shaft vertical submerged pumps, CQC first-level energy efficiency chemical pumps, high-pressure descaling industrial pumps, and China chemical pumps. gaoshengexpo.com Contact: 13905263417 E-mail: jslgpump@gmail.com E-mail: jsareva@163.com