Chimsoc Smooth black stove pipe is a single skin flue system manufactured in zero carbon steel with vitreous enamel coating in a matt black finish. Chimsoc Smooth stove pipe should only be used as a connecting pipe between your appliance and flue liner, chimney stack, or twin wall flue system.Black stove pipe should NOT be used to pass through ceilings or walls.Fuel Type: Gas, oil and approved solid fuelsInner Casing Material: 1.2mm low carbon mild steelOuter Casing Material: Powder EnamelJoint Method: Friction fit, only requires jointing compound at the appliance connectionDesignation (Seal): EN1856-2 T600 N1 D Vm L80120 G450 NMØ150mmCE Approved: YesMax Operating Temperature: 600°CWarranty: 2 Year product warranty