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“双菱牌”热轧带肋钢筋1981-1991年连续三届蝉联国家产品银质奖（最高奖），1994-1999年连续获得国家冶金产品实物质量金杯奖，2001年获“全国首批免检产品”称号，2001年被评为湖南省名牌产品，1997年获全国实物质量抽查评比第一名，并在全国产品质量十佳企业排序第一。产品畅销全国，广泛应用于国家重点工程，如：长江葛洲坝水利工程（大坝主体结构钢筋全部采用本公司产品）、长江三峡水利工程、广州小浪底水利工程、首都国际机场。
涟钢生产的“双菱牌”热轧带肋钢筋按负偏差轧制而成，年生产能力达100万吨以上。产品规格齐全（φ12mm-φ40mm），质量为国内同类产品一流水平。
The hot rolled deformed bars with the Double Rhombus trademark was awarded the state sliver medal the highest prize) 3 times continuously during 1981-1991 and the National Golden Cup award for high quality metallurgical products continuously during 1994-1999.the national random survey of products quality and took the first place among the national top-ten good quality enterprises. Lian Yuan Steel's debars find a good sale in the whole country and are widely used in national key construction projects, such as the hydraulic station of Ge Zhouba of Yangtze River the deformed bars used in the dam's main structure are all produced by Lian Yuan Steel), the Three Gorges Projects of the Yangtze River, the subway project in Guangzhou, the square of Guangzhou eastern railway station, Shenzhen international trade building, the hydraulic station of Xiao Lang di of the Yellow River and the Capital international airport.
The hot rolled deformed bars are produced according to negative deviation. The annual production capacity is more than 1,000,000 tons. Lian Yuan Steel's debars production range is one of the widest(φ12mm-φ40mm)and the quality is in the leading position among the similar products in the country.
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