MATERIALS AND SIZES Sizes Tolerance OD: 2″ to 60″ -1 ~+2 mm Bend radius: R≧3D WT: 3 to 60 mm WT thinning: R=3D ≤13% R=4D ≤11% R=5D ≤9% R≧6D ≤8% Bend angle: 0~180 deg ±0.5 deg Forming velocity: ±2.5mm per min Forming temperature: ±10°C from the qualification temp. Bend ovality: ≤2.5% Tangent ovality: ≤0.8% ID