高密度聚乙烯(HDPE)双壁波纹管，是一种具有环状结构外壁和平滑内壁的新型管材，80年代初在德国首先研制成功。经过十多年的发展和完善，已经由单一的品种发展到完整的产品系列。目前在生产工艺和使用技术上已经十分成熟。由于其优异的性能和相对经济的造价，在欧美等发达已经得到了极大的推广和应用。在我国，HDPE双壁波纹管的推广和应用正处在上升势态阶段，各项技术指标均达到使用标准。双壁波纹管内壁颜色通常有蓝色和黑色，部分品牌内壁会使用黄色。

High density polyethylene (HDPE) double wall corrugated pipe is a new type of pipe with annular structure outer wall and smooth inner wall. It was first developed in Germany in the early 1980s. After more than ten years of development and improvement, it has developed from a single variety to a complete product series. At present, it has been very mature in production technology and application technology. Because of its excellent performance and relatively economic cost, it has been greatly popularized and applied in developed countries such as Europe and America. In China, the promotion and application of HDPE Double wall bellows is in the rising stage, and all technical indexes meet the application standards. The inner wall color of double wall corrugated pipe usually has blue and black, and the inner wall of some brands will use yellow.

双壁波纹管及其它弹性元件承受单位载荷时所产件的位侈量称为元件的灵敏度。刚度和灵敏度是波纹管及其它弹性元件的主要功能参数，但它们又是同一使用特性的两种不同的表示方法。对于不同的场合，为便于分析问题，可采用其中任何一种参数。

When double wall bellows and other elastic elements bear unit load, the waste of parts is called the sensitivity of elements. Stiffness and sensitivity are the main functional parameters of bellows and other elastic elements, but they are two different expressions of the same service characteristics. For different occasions, any of these parameters can be used to facilitate the analysis of the problem.

洛阳梓哲管材科技有限公司拥有一支年轻而富有朝气的营销团队，有专业的工程师提供整套解决方案，并拥有一套成熟的现代化管理体制。从产品的生产、配送，安装、调试以及售后都有一套完整的服务体系。公司运用现代化的管理手段，能够以好的质量、快的速度、合理的价格为客户提供、及时的服务，为客户的生产和运转提供坚实可靠的保证和支持。我们有能力也有意愿寻求与客户共同获益和成长的机会，这也是我们多年以来一直不懈追求的目标。

Luoyang Zizhe Pipe Technology Co., Ltd. has a young and vibrant marketing team, professional engineers provide a complete set of solutions, and has a mature modern management system. There is a complete service system from the production, distribution, installation, commissioning and after-sales of products. Using modern management means, the company can provide customers with good quality, fast speed and reasonable price, timely service, and provide solid and reliable guarantee and support for customers" production and operation. We have the ability and willingness to seek opportunities for common benefit and growth with customers, which is also the goal we have been pursuing for many years.