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here are 2 types: 1, Standard high: Height of Corrugation h=108mm, Fetch of wave q=59mm, Wall thickness t=1.5mm, Bend radius of elbow R=300mm, suitable for rectangular flue with profile< 4.6m2. Max compensation per wave: a=±11mm (without cold drawing)
2, Standard full high: Height of Corrugation h=216mm, Fetch of wave q=86.4mm, Wall thickness t=2.6mm, Bend radius of elbow R=600mm
