Steel Tube Handbook - 2018

91 Devices and method of production Table 39 Method Parameter Sawing 1 Sawing 2 Shearing Rotary cutt-off Range Outside diameter 12–102 mm 10–81 mm 15–152 mm 20–90 mm Wall thickness 1–3 mm 0,5–7 (12) mm max. 7% D 0,7–12 mm Lenghts 20 (130)–3250 mm 15–600 mm 25–780 mm 150–2000 mm Tolerances ±0,25 mm ±0,025 mm ±0,25 mm ±0,11– ±0,19 mm Stabilization of production process CpK > 1,67 CpK > 1,67 Tube ends Brushing L = 130(250)–3980 mm Tube ends bevelling D = 10–81 mm L = 15–340 mm 5°–85° (min. d = 12 mm) D = 15–70 mm L = 30–690 mm D = 20–90 mm L = 150–2000 mm 5°–85° (min. d = 18 mm) Surface protection Washing and passivating at L = 100–3000 mm Without protection or oiled Outside diameter D [mm] wall thickness [mm] Tube ends bevelling Shearing of tubes L