双金属复合管特点：
Features of bimetallic composite pipes:
1、防腐性好：能有效地防止二次污染，符合国家直接饮用水质标准的要求；
1, good anticorrosion: can effectively prevent two times of pollution, in line with the national direct drinking water quality standards;
2、强度高：有较强抗挤压，抗共振性，极大的降低了水管受到外力冲击而产生渗漏的可能性，避免了因渗漏对水资源产生大量浪费；
2, high strength: strong resistance to extrusion, anti resonance, greatly reducing the water pipe under the impact of external force and leakage of the possibility, to avoid a large amount of waste caused by leakage of water resources;
3、稳定性好：在-20~350℃热膨胀系数几乎一致（热膨胀系数小、耐热性高）；
3, good stability: at -20~350 C, the coefficient of thermal expansion is almost the same (low thermal expansion coefficient and high heat resistance).
4、管壁光滑、均匀，不结垢，通径有保障，输送能耗低；
4, the wall is smooth and uniform, no scaling, the path is guaranteed, and the transportation energy consumption is low.
5、采用传统工艺连接，安全、灵活、可靠；
5. The traditional process connection is safe, flexible and reliable.
6、降低热能损耗，不锈钢管的保温性能是铜材料水管的24倍，大量地节约了热水输送中的热能损耗；
6, reduce heat loss, stainless steel pipe insulation performance is 24 times the copper material pipe, a large number of hot water transport in the heat loss;
7、性价比优：总的造价只有薄壁不锈钢管的三分之二价格，紫铜管的五分之一价格。
7, cost-effective: the total cost is only 2/3 of the thin wall stainless steel tube, and the 1/5 price of the copper tube.