Shanghai Nai Les James Burley Valve Co., Ltd. has successfully developed and passed expert evaluation for its PN100 and DN500 fully welded ball valves, marking a major breakthrough in domestic valve technology. This achievement not only breaks the long-standing technological monopoly by foreign companies but also represents a significant step toward the localization of critical pipeline equipment.
Long-distance pipelines serve as vital global energy supply routes, with an average of one valve installed every 30 to 40 kilometers. These valves are often located in remote, unmanned areas, which means they must meet extremely high performance standards. During the welding process, precise control over the temperature field, residual stress, and deformation of the valve body is essential. This level of technical complexity has long been a challenge for domestic manufacturers, making it a key bottleneck in the industry.
In response to this challenge, Niles followed the development strategy of "production, learning, and research," inspired by the goals set during the 2000 meeting on the localization of major equipment for the West-East Gas Pipeline Project. After nearly three years of dedicated technical research, the company overcame the key obstacles in the production of all-welded pipeline ball valves, achieving significant advancements in both welding technology and overall valve performance.
Industry experts predict that over the next decade, China will see the construction of approximately 2.6 million kilometers of new pipelines, requiring around 100 large-scale all-welded pipeline ball valves annually. In comparison, foreign countries build more than 30,000 kilometers of pipelines each year, necessitating about 1,000 all-welded pipeline valves. These figures highlight the immense market potential for all-welded pipeline ball valves, offering a promising future for domestic manufacturers like Niles.
With continued innovation and improved technical capabilities, the domestic valve industry is well-positioned to capture a larger share of this growing market, further strengthening national energy infrastructure and reducing reliance on imported technologies.
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