砂石生产线性能的优劣可根据产品质量判定。产品质量指标主要有两个：针片状颗粒的比率以及含粉量。
The performance of sand production line can be judged according to product quality. There are two main product quality indicators: the ratio of needle-flake particles and powder content.
据专家介绍国家建材标准对于砂石料有明确的规定，凡砂石料的针片状颗粒超过一定范围，就算不合格。如今高速铁路、高速公路、水利工程的建设用料极其严格。合理设计的砂石生产线能够有效的避免针片状碎料的增多，大厂家所出的颚式破碎机、反击破碎机、圆锥破碎机都是避免针片状颗粒增多的关键设备。
According to experts, the national building materials standards have clear provisions for sand and gravel, where the needle-like particles of sand and gravel exceed a certain range, even if they are not qualified. Nowadays, the construction materials for high-speed railway, highway and water conservancy www.diandongmenc.net.cnwww.chongyajiann.com.cnwww.xinzhouyanglao.cnprojects www.diandongmenc.com.cnwww.chongyajiann.cnare extremely strict. Reasonable design of sand and www.yanglaoyuanc.com.cngravel production line can effectively avoid the increase of needle-like fragments. Jaw crusher, counterattack crusher and cone crusher produced by large manufacturers are the key equipment to avoid the increase of needle-like fragments.
国家标准对于含粉量也有要求，如果含粉量过大，也视为砂石料不合格，不可以使用到大型工程上面。很多大型石料厂是专业给高铁建设、高速建设供应石料，但是在生产线投产后，产量不能满足工程建设所需，这样的生产线是不合格的，其危害性十分严重，望广大厂家和投资人重视。
The national standard also requires the content of powder. If the content of powder is too large, it is also considered that the sand and stone materials are not qualified, and can not be used in large-scale projects. Many large stone factories specialize in supplying stone for high-speed railway construction and high-speed construction, but after the production line is put into operation, the output can not meet the needs of Engineering construction. Such production line is not qualified, and its harm is very serious. We hope that the majority of manufacturers and investors will pay attention to it.