Pipe 500mm Ø 150
At a Glance
- - HETAS and CE approved for guaranteed safety and compliance
- - Constructed with twin-wall stainless steel (304 outer, 316 inner for corrosion resistance)
- - Insulated with compressed rockwool (200kg/m3) for optimum thermal efficiency
- - Effective installed length of 465mm ensures reliable performance
- - Suitable for solid fuel and gas/oil appliances including woodstoves, gas coal effect fires, and boilers
- - Easy-to-install with a secure locking band system
- - Maintains a safe 50mm clearance from combustibles

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.
We Won't Be Beaten On Price
At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:
- Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
- Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
- Operational Efficiency: We have streamlined processes to reduce overhead.
Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.
Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).
“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
Have Questions?
Phone: 01670 206999
Email: [email protected]
- Info
- Specs
- Install
- FAQs
The TWPro 500mm Twin Wall Insulated Chimney Pipe is a robust and reliable solution for your chimney needs. Designed for use with solid fuel and gas/oil appliances, such as woodstoves, gas coal effect fires, and boilers, this pipe ensures optimal performance. Constructed from 304-grade stainless steel on the outer skin and 316-grade stainless steel on the inner skin, both skins boast a thickness of 0.4mm.
Enhanced insulation is provided by compressed rockwool with a 200kg/m3 density, ensuring exceptional thermal efficiency. Every component is meticulously welded for maximum durability. It's essential to maintain a 50mm distance from combustibles.
The TWPro pipe carries HETAS approval and CE marking, certified under designations EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20. Installation is straightforward with the use of a locking band to secure parts, ensuring a tight and secure fit.
SKU: 2-150-011
Technical Specifications | |
---|---|
Effective Installed Length | 465mm |
Outer Material | 304-grade stainless steel (0.40mm thick) |
Inner Material | 316-grade stainless steel (0.40mm thick) |
Insulation | Compressed rockwool (200kg/m3) |
Certifications | HETAS / CE |
Approvals | EN1856-1 T600 N1 W V2 L50040 G50, EN1856-1 T200 W V2 L50040 O20 |
Clearance To Combustibles | 50mm |
Application | Solid fuel and gas/oil appliances |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, April 8th. If you need faster stove or fireplace delivery please give us a call. We can often reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.
Warranty & Returns +
All our products come with warranties. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.
Price Match Guarantee +
We will match any price like for like. If you find it cheaper within 48 hours, we'll refund the difference.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
At National Flues, we believe the TWPro 500mm Twin Wall Insulated Chimney Pipe stands out with its HETAS approval and CE marking, guaranteeing top-tier performance and safety. With our reliable nationwide delivery and exceptional pricing, we cater to both retail and trade customers seamlessly.
The TWPro 500mm Twin Wall Insulated Chimney Pipe is designed for effectively venting solid fuel and gas/oil appliances, ensuring safe and efficient smoke and gas exhausts.
TWPro is a trusted name in the chimney and flue industry, known for its high-quality, HETAS-approved, and CE-certified products designed to ensure safety and top performance.
