How to Distinguish Between Good and Bad Double Wall Bellows?

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Double wall corrugated pipe is mature product which has the advantage of low weight, low cost, anti-corrosion, good ring stiffness and flexibility. Our company has developed PE double wall corrugated pipe extrusion line for more than 20 years. We have the whole series of double wall corrugated pipe machine: horizontal type, vertical type and shuttle type. Our machine can process wide range of material, including HDPE, PP, PVC, etc.


PE double-wall corrugated pipe production line, high-density polyethylene (HDPE) double-wall corrugated pipe is a new type of pipe with a ring-shaped outer wall and smooth inner wall. After more than 20 years of development and improvement, it has developed from a single variety to a complete product line. At present, it is very mature in production technology and use technology. Due to its excellent performance and relative economic cost, it has been greatly promoted and applied in developed countries such as Europe and the United States. In China, the promotion and application of HDPE double-wall corrugated pipes are in an upward trend and all technical indicators have reached the standards for use.


Our double wall corrugated pipe extrusion line can produce from inner diameter of 63mm to 1200mm.

 

Double Wall Bellows


Product features:


light weight, high pressure resistance, good toughness, fast construction, long life, etc.  

 

Product advantages:


easy and reliable connection, many replacements of concrete pipes and cast-iron pipes, greatly reducing costs.

 

Application scene:


underground drainage pipes, ventilation pipes of buildings such as factories and communities. Water conservancy projects such as farmland irrigation, drainage, and drainage. Used as drainage and sewage pipe in municipal engineering.


Grade difference


The classification of HDPE double-wall corrugated pipes can be said to be a division of quality. There are mainly two types of quality indicators: ring stiffness (unit: KN / m²) and ring flexibility. The quality levels distinguished on the market are basically distinguished by ring stiffness and the levels are divided into enterprise standards and national standards.


Enterprise standards generally include: S1 and S2, the national standard is SN8 / SN10 / SN12.5. The ring stiffness of the enterprise standard is lower than 8KN / m², and the ring stiffness of the national standard is greater than 8KN / m². Among them, S1 and S2 corrugated pipes are suitable for some private enterprise projects. In some simple drainage projects, the price is relatively cheap. Bellows of SN8 or higher are suitable for some important public such as people's livelihood construction, social infrastructure construction, etc. The selection of materials must be the most important.

 

Jiangsu Xinrongplas Machinery Co., Ltd was founded in year 1996. With continuous focusing on plastic extrusion machinery, we have gained a certain awareness as one of professional manufacturer. Our main products are: plastic pipe extrusion line, plastic profile extrusion line, plastic sheet extrusion line and plastic recycling machine.


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