Double wall corrugated pipes are advanced pipes imported from foreign technology. Traditional concrete pipes are not only heavy, but also have poor impact resistance. The heavy weight increases construction difficulty and requires extra attention during installation.
This new type of double wall corrugated pipe drainage pipe is manufactured using polyethylene as a raw material. Polyethylene is a polymer plastic with:
This is an unmatched advantage over traditional concrete pipes.
Despite being lightweight, HDPE corrugated pipes offer excellent structural strength. Ring stiffness grades can reach SN4 and SN8, providing reliable performance under soil loads and traffic.
After the introduction of standard corrugated pipe technology in China, engineers developed an enhanced version by adding a steel strip reinforcement. This is commonly called steel belt corrugated pipe. Simply put, molten polyethylene is wound on the surface of a steel strip, creating an enhanced double-wall corrugated pipe with superior ring stiffness.
If there is a strong load on the buried surface — such as under roads, parking areas, or heavy industrial zones — select a steel strip corrugated pipe with a higher ring stiffness rating for laying. For standard drainage and sewage applications, regular HDPE double-wall corrugated pipes at SN4 or SN8 are typically sufficient.
Interested in this machine?
Need help selecting the right production line for your pipe specifications? Our engineers can advise you.
Talk to an Engineer
How a regional city sewage authority replaced aging clay pipes by procuring Suba's SL600 high-speed PP double-wall corrugated pipe production line — from first contact to full operation.
How an East African national road authority sourced a Suba SL300 production line to manufacture ID 300mm HDPE corrugated drainage pipes for 450 km of new highway — covering procurement, commissioning, and results.
A Central European telecom contractor producing OD 110mm HDPE corrugated cable protection pipes for a national fiber network chose Suba's SL110 line. Full case study: technical spec, order, delivery, and 2 years of production.
Contact us for a free consultation and quote
