Sigma Single Wall Connecting Flue

Sigma has been specifically designed as a connecting flue pipe to facilitate the connection between a multi-fuel appliance and either an existing brick chimney or a prefabricated twin wall system chimney. This product has been developed to offer a smooth aesthetically pleasing joint without the need of an additional locking band and is available in four diameters covering 130mm, 150mm, 180mm and 200mm. The product range covers a comprehensive range of lengths, fittings and support components to ensure simplicity of installation.

  • Diameter130mm-200mm
  • Type Single Wall
  • Material316L stainless steel
  • Benefits


    • Suitable for solid fuel burners and stoves
    • Corrosion resistant stainless steel
    • Available in 0.6 and 1mm thickness
    • Smooth transition between elements
  • Features

    Typical Application

    SIGMA is designed to be used internally as a multi-fuel connecting flue pipe and must be applied in accordance with National Building Regulations and installation guidelines. The product is designed for use on natural draught and dry systems, where the flue gas temperature will not exceed 600°C.

  • Features


    SIGMA is manufactured from corrosion-resistant 316L (1.4404: X2CrNiMo 17-12-2) stainless steel with a material thickness of 1.0mm. All components are fully welded to ensure the integrity and stability of the product. The joint is designed to offer the appearance of a smooth continuous pipe, offering a very aesthetically pleasing finish to the product.


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How to Buy

In order to purchase our products, we only sell directly via Gas Safe Registered installers and distribution partners throughout the UK. Depending on your requirements, simply select the most appropriate option below.

Need product advice?

Contact The Team

Our expert team will be able to guide on the correct selection and application for any domestic or commercial flue installation or arrangement.

Contact Us

Need Flue Now?

Trade Counter

Our warehouse in Dublin, Tallaght, is stocked with various flue and chimney components. Give our trade counter a call and arrange collection anytime during the week.

Cal Trade Counter