DRIVEN CROSS ROLL series Tube Straightening Machines offered by ESE are designed to handle tubes of external dia from 4mm to 270mm in different models. These machines are based on glowing proven revolving pressure and deflection principle of straightening, which gives very high degree of straightness ranging 1mm to 0.3mm in 1000mm. The rolls are mounted in pairs and are driven. MODELS TUBES SIZE RANGES WALL THICKNESS ST 16 4 To 16 2.5 ST 25 6 To 25 3.2 ST 32 6 To 32 2.4 ST 40 8 To 40 4.0 ST 50 10 To 50 5.0 ST 65 12 To 65 4.0 ST 76 15 To 76 6.0 ST 90 20 To 90 8.0 ST 115 20 To 115 6.0 ST 140 25 To 140 7.0 ST 170 50 To 170 12.0 ST 220 50 To 220 8.0 ST 270 60 To 270 14.0 Tube Straightening Machine 3 X 3 distort Roll Design, 5 X 5 distort Roll Design