The Ruilun Twin wall insulated twist lock chimney systems designed to meet the requirements for multi-fuel that operate under negative conditions. The systems with a specific range of components and use twist lock teeth to lock each other properly. The systems are CE approved by Famous Italy Kiwa test lab under EN1856-1.

The twin wall twist lock chimneys is a factory made and prefabricated double wall insulated stainless steel chimney systems. flues are full welding with high performance.

This special design and construction provide high thermal resistance the test temperature reaches 1100 °C and the normal use can under 600 °C continuous. Our skin surface can still stay at a low temperature.  This system is both suits for  Internal and external installations appliances.