en.Wedoany.com Reported - Jiuquan Tiansheng Company, a subsidiary of China Gansu JISCO Group Western Heavy Industry Co., Ltd. (referred to as "Western Heavy Industry"), recently achieved a breakthrough in the T-type wind power flange rolling process. The first batch of ring parts reached advanced industry levels in dimensional accuracy, appearance quality, and mechanical properties. After the implementation of this technology, it can save 260 tons of raw materials annually and generate over 1.3 million yuan in benefits, filling the market gap for large-scale production of T-type wind power flanges in the Northwest region.
Founded in 2008, Western Heavy Industry is a state-controlled joint-stock enterprise under Jiuquan Iron and Steel Group Co., Ltd. Its wholly-owned subsidiary, Jiuquan Tiansheng Company, established in 2009 and located in Jiuquan City, Gansu Province, specializes in the manufacturing of large non-standard equipment such as wind power towers, flanges, and photovoltaic supports. As the first high-end forged flange project in Gansu Province, Western Heavy Industry has invested a total of approximately 150 million yuan to build a production line for wind power tower supporting forged flanges with an annual output of 10,000 tons. In 2025, the production line completed the delivery of about 6,672 tons of flanges, achieving a 100% on-time delivery rate.
In the field of wind power equipment manufacturing, the T-type flange at the bottom of the tower, due to its large diameter, special structure, and stringent forming precision requirements, has long been a key bottleneck restricting the localization of high-end wind power flanges. Traditional processes mostly use rectangular blanks for machining, which suffer from high blank coefficients and low material utilization rates. Although the T-type flange ring rolling process can directly form irregular cross-sections to reduce material loss, it imposes extremely high demands on equipment performance, mold design, and process parameter matching.
To overcome this challenge, Jiuquan Tiansheng Company first completed a systematic upgrade of the ring rolling machine, covering hardware improvements, control system optimization, and mold adaptation design. Based on this, technical personnel rooted themselves at the production frontline, collaborating with equipment manufacturers in multiple rounds of technical discussions to solve issues such as dimensional deviations, surface defects, and performance fluctuations during the forming process. Previously, in April 2026, Western Heavy Industry successfully developed a 5-meter diameter "L-type" flange, breaking foreign technological monopolies. This breakthrough in T-type flange technology marks the company's upgrade from conventional products to high-end special-shaped products in the wind power flange manufacturing field.
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