双扣聚氯乙烯增强管发展初期，PE管的用量远远小于PVC管，钢带管主要原因是经济性。当时高性能PE管材料还没有被开发出来，只能使用性能相当于PE63等级的PE材料，由于强度低，同样条件下PE管的壁厚要比PVC管大1倍以上，不仅材料成本高且只能在较低压力、较小直径管材上应用，否则壁厚太大无法使用。随着研发力度不断加大，新一代高强度管材专用PE料不断涌现，不仅出现PE80级，还出现PE100级产品。材料升级换代使PE管各种应力显著提高，管壁厚度越来越薄，甚至低于PVC管。

At the beginning of the development of double buckle PVC winding pipe, the consumption of PE pipe was far less than that of PVC pipe, and the main reason of steel pipe was economy. At that time, high-performance PE pipe material had not been developed, only PE material with performance equivalent to pe63 grade could be used. Due to low strength, the wall thickness of PE pipe was more than twice that of PVC pipe under the same conditions, which not only had high material cost, but also could only be applied to pipes with lower pressure and smaller diameter, otherwise the wall thickness was too large to be used. With the continuous increase of research and development, a new generation of special PE materials for high strength pipes are emerging, not only PE80 grade, but also PE100 grade products. With the upgrading of materials, all kinds of stress of PE pipe increased significantly, and the thickness of PE pipe wall became thinner and thinner, even lower than that of PVC pipe.

双扣聚氯乙烯增强管是由HDPE同时挤出的波纹外壁和一层光滑内壁一次熔结挤压成型的，管壁截面为双层结构，其内壁光滑平整，外壁为等矩排列的具有梯形中空结构的管材。

Double buckle PVC winding pipe is formed by one-time fusion extrusion of corrugated outer wall and a layer of smooth inner wall extruded by HDPE at the same time. The section of pipe wall is double-layer structure, the inner wall is smooth and flat, and the outer wall is trapezoidal hollow structure pipe with equal moment arrangement.

具有优异的环刚度和良好的强度与韧性，重量轻、耐冲击性强、不易破损等特点，且运输安装方便。管道主要采用橡胶圈承插连接(也可采用热缩带连接)。由于双扣聚氯乙烯增强管的特殊的波纹管壁结构设计，使得该管在同样直径和达到同样环刚度的条件下，用料(HDPE)省。但受到生产工艺限制，目前国内能生产的大口径也只有DN1200，使得其推广受到一定的限制。

It has excellent ring stiffness, good strength and toughness, light weight, strong impact resistance, and is not easy to be damaged, and easy to transport and install. The pipes are mainly connected with rubber ring socket (or heat shrinkable tape). Due to the special corrugated pipe wall structure design of double buckle PVC winding pipe, the material (HDPE) is saved under the condition of the same diameter and the same ring stiffness. However, due to the limitation of production process, the current domestic production of large caliber is only DN 1200, which limits its promotion.