Steel Tube Handbook - 2018

90 Specially designed tube semi-finished products, tailored to customer’s needs are available upon request. Cold drawn precise tubes are machined, but when requested, hot finished tubes are furnished as various forms of semi finished products. Products • Tube cut in short exact lengths by: – sawing – shearing – rotary cut-off head with slides • Tube with bevelled ends • Tube bending Dimensions of tube bends Table 38 It is possible to bend the tubes in three planes without destroying the tube at the bend point (see table) by CNC tube bender. Bend parameters: • max. size of bent tube – 42 x 2,5 mm • bend radius – 12–260 mm • max. bend angle – 187 ° • tolerance on bend angle – ±0,1° • tube length under the final bend – max 3 000 mm • tolerance of length – ±0,1 mm Packaging Semi-finished products are delivered according to customer specifications in mettalic box pallets, collapsible pallets, cardbo- ard cartons placed on wooden europallets or bundled. Certified test report According to DIN 50049 - EN 10204 - 2.2 or 3.1. Cut and bent tubes Bend angle Rm 20 25 32 40 50 60 80 100 125 160 200 250 D = 10 t ≥ 1 D = 12 t ≥ 1 D = 14 t ≥ 1 D = 15 t ≥ 1 D = 16 t ≥ 1 D = 18 t ≥ 1 D = 20 t ≥ 1 D = 22 t ≥ 1 D = 24 t ≥ 1 D = 25 t ≥ 1 D = 28 t ≥ 1 D = 30 t ≥ 1,5 D = 32 t ≥ 1,5 D = 35 t ≥ 1,5 D = 38 t ≥ 1,5 D = 40 t ≥ 1,5 D = 42 t ≥ 1,5 t = D/20 Ri = 2D t = D/30 Ri = 3D t = D/50 Ri = 4,5D