Zhengzhou SIWEI

Caterpillar (Zhengzhou) Ltd.

Caterpillar (Zhengzhou) Ltd. is a fully-owned subsidiary of Caterpillar. Its predecessor is Zhengzhou Siwei Mechanical & Electrical Equipment Manufacturing Co., Ltd., which formally joined Caterpillar in 2012, and was renamed on November 8, 2013. As one of the leading roof support manufacturers in China, Caterpillar (Zhengzhou) Ltd delivers Zhengzhou SIWEI branded roof supports to all underground coal mines across China, and even to international markets, such as Eastern Europe, Asia and Australia.

As an innovative enterprise with independent R&D capability, Caterpillar (Zhengzhou) Ltd owns a powerful R&D team and numerous patents. Backfill roof support developed independently by the company has become a paradigm of “green mining”. Today, by leveraging Caterpillar’s production and product design expertise and global network, we will further boost our R&D capability and expand our global presence, to provide domestic and international customers with improved products and services.

R&D Capability

As a global leader in longwall roof support technology, Caterpillar built a design and production base in Luenen, Germany. In early 1970s, we strived to drive roof support technology research in response to rigorous mining conditions at coal mines in Germany.

The predecessor of Caterpillar (Zhengzhou) Ltd was one of the fastest-growing makers of roof support in China. Based on an experienced, excellent and stable R&D team, it continuously made theoretical and technological innovations, leading the country in green mining represented by solid backfill and high-reliability high seam roof support technology.

Between 1995 and 2012, the company invested more than RMB100 million in creating a physical environment for high-tech development, and spent more than RMB30 million in upgrading design software’s and the R&D management platform. At the same time, the company actively strengthened its cooperation, in such fields as stress test on roof support, solid backfill technology, and low welding crack-sensitive high-strength steel technology, with scientific research institutions such as Northeastern University, China University of Mining and Technology and Baosteel Research Institute.

After joining Caterpillar in 2012, the R&D team has been closely collaborating with the Luenen-based international R&D team, reviewing drawings for each other and conducting design together to develop and manufacture more longwall roof supports of “German quality standard, China manufactured” to meet customers’ expectations.

Customer Application

Over the past years, Caterpillar (Zhengzhou) Ltd. has developed nearly 1,000 sets Zhengzhou SIWEI branded roof supports for dozens of coal groups (bureaus), including Shenhua Group, Shanxi Coking Coal Group, Shenhua Ningxia Coal Industry Group, Longmay Mining Holding Group, Shaanxi Coal and Chemical Industry Group, Yangquan Coal Group, Datong Coal Mine Group, Jincheng Anthracite Coal Mining Group, Zhong Ping Energy Chemical Group, Jizhong Energy Group, Kailuan Group, Huaibei Coal Mining Group, Wanbei Coal Group, Yankuang Group, Tianfu Thermoelectric, Shenyang Coal Trade Group, Shulan Mining Group, Huichun Coal Mining Group, Liaoyuan Mining Industry Group, Fuxin Mining (Group), Tonghua Mining (Group), Shansonggang Mining Industry Group, Huaneng Zhalainuoer Coal Mining, Yidong Group, Pingzhuang Energy, Dongyuan Coal & Power, Shenmu, and Fugu.

Caterpillar (Zhengzhou) Ltd.