TWPro GREY - Pipe 250mm - Ø 125
At a Glance
- Premium 250mm flue pipe designed for multiple fuel types
- Dual-layer construction with 304-grade outer and 316-grade inner stainless steel (0.4mm thick each)
- High-density compressed rockwool insulation for optimal thermal performance
- HETAS Approved and CE marked for safety and quality assurance
- Engineered for both residential and commercial applications

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 GREY - Pipe 250mm - Ø 125 is designed for exceptional performance in both residential and commercial settings. Ideal for use with solid fuel, gas, and oil appliances including wood stoves, gas coal effect fires, and boilers, this flue pipe ensures efficient and safe operation. Its construction features an outer skin made from 304-grade stainless steel and an inner skin from highly durable 316-grade stainless steel, both with a thickness of 0.4mm.
The insulation, made from compressed rockwool with a density of 200kg/m3, ensures optimal thermal protection. All parts are fully welded to guarantee strength and longevity. TWPro products are HETAS Approved and CE marked, ensuring compliance with industry standards.
The designated numbers EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20 affirm its capability to handle high temperatures and a variety of fuel types safely. Installation is straightforward, with parts secured by a Locking Band, and maintaining a 50mm distance from combustibles is essential for safe operation.
SKU: 17-125-012
Technical Specifications | |
---|---|
Product Name | TWPro GREY - Pipe 250mm - u00d8 125 |
Diameter | 125mm |
Effective Installed Length | 215mm |
Inner Material | 316L Stainless Steel (0.4mm thick) |
Outer Material | 304 Stainless Steel (0.4mm thick) |
Insulation | Compressed Rockwool (200kg/m3 density) |
Approvals | HETAS Approved, CE Marked |
Certification | EN1856-1 T600 N1 W V2 L50040 G50 & EN1856-1 T200 W V2 L50040 O20 |
Fuel Compatibility | Wood, Oil, Gas, Low sulphur coal |
Installation Requirement | Maintain a minimum 50mm distance from combustible materials |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Wednesday, April 2nd. 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
The TWPro GREY - Pipe 250mm - Ø 125 is a top-notch selection from National Flues. Its robust construction and versatile application make it a must-have for solid fuel, gas, and oil appliances. We’re confident in its quality and offer nationwide delivery to both retail and trade customers.
The TWPro GREY - Pipe 250mm - Ø 125 is used for creating efficient and safe flue systems for solid fuel, gas, and oil appliances.
TWPro is renowned for producing high-quality chimney and flue systems that meet stringent industry standards. They are a trusted brand known for their durability and reliability.
