Bwer HDPE Double-wall Corrugated Pipe
High-Capacity Double-Wall Corrugated Gravity Sewers for Culverts & Municipal Drainage Networks. Certified globally for Iraq's infrastructure projects. Trusted by top ministries and Garmian utility contractors.
The Bwer Advantage for HDPE Double-wall Corrugated Pipe
Discover why Bwer Pipes is recognized as the leading and most trusted manufacturer in Iraq.
Engineered Double-Wall Design
Features a corrugated outer layer for high ring stiffness and mechanical loading strength, and a smooth inner lining for fast flow rates.
Lightweight Construction
Up to 90% lighter than concrete pipe. Eliminates the need for heavy site cranes, reducing logistics and installation labor costs.
Immune to Chemical Attacks
100% resistant to domestic sewage acids and corrosive compounds found in high-salinity Iraqi groundwaters.
Secure Rubber Gasket Joints
Uses elastomeric rubber seals inside the socket or coupling. Creates a leak-proof connection that resists root penetration.
Technical Specifications
Step-by-Step Field Guidelines
1. Trench Bedding
Excavate trench. Place a 10cm sand or fine gravel bedding layer to distribute pipe support.
2. Joint Assembly
Position the rubber ring in the first corrugation valley of the spigot. Lubricate and push into the socket.
3. Slope Control
Verify pipeline slope using a level. Corrugated pipes require accurate alignment for gravity flows.
4. Backfill Compaction
Place sidefill and compact in layers to support the corrugated pipe wall structure.
Quality Control & Lab Testing
Manufactured in our state-of-the-art facility in Kalar, Garmian. Tested on every single batch.
Ring Stiffness Test
Verifies SN4/SN8 load capacity under compression.
Ring Flexibility Test
Compresses pipe to 30% deflection to ensure wall structure does not crack.
Joint Tightness Test
Verifies seals under 0.5 Bar water head pressure.
Oven Heating Test
Checks material structure at 110°C to verify absence of delamination.
Frequently Asked Questions
Common questions regarding implementation in Iraqi governorates.
Q: Can it be used for road culverts?
A: Yes, Bwer SN8 corrugated pipes are approved for heavy traffic loading and are used for highway culverts across Iraq.
Q: Why is the inner wall white or blue?
A: The bright interior color simplifies CCTV camera inspections, making it easy to identify any silt buildup or damage.
Q: Does it require welding?
A: No, corrugated pipes are joined using quick socket push-fit connections and rubber gaskets, requiring no welding machines.
Request Factory-Direct Price Quote
Connect with our commercial office in Garmian to coordinate volume orders, logistics timelines, and certifications for municipal bids.