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由机电部济南铸锻机械研究所设计、天水铸造机械总厂试制的J522型卧式滚轮二工位离心铸管机是甘肃省“七五刀期间重大技术开发项目,1992年5月28日在天水市通过了由甘肃省机械工业总公司、天水市经委和市委主持的鉴定。该机经不断完善改进,用户反映良好,用该机生产的铸管已打入国际市场,取得明显技术经济效益。
Designed by Jinan Casting and Forging Machinery Research Institute of Mechanical and Electrical Department, J522 horizontal roller two-station centrifugal casting machine trial-manufactured by Tianshui Foundry Machinery Plant is a major technology development project of Gansu Province during the period of “Seventh Five-Year Plan”. On May 28, 1992, Tianshui City, adopted by the Gansu Provincial Machinery Industry Corporation, Tianshui City Economic Commission and the Municipal Committee presided over the identification of the machine by continuous improvement and improvement, the user reflects the good, with this machine has entered the international market of cast pipe, and achieved significant technical and economic benefits .