暂无

• But because it is not spreading popularize and new type pipe in market emerge in an endless steam , the selling market is not standard , many pipe material has not standard temporary . how to choose suitable pipe materials that it is not only the ordinary use do n ' t know but also relevant design and construction technician can not know comprehension
  而且厂家生产与销售市场又不够规范，很多管材暂无设计规程与施工验收规范。要想选用适用的管材，正确进行设计和施工，需要研究新型管材的耐热、耐压、膨胀和阻力损失等物理性能。