... CStorage Temperature: -30°C1. Cylinder diameter: Φ356×1840mm ( typical product) , linear portion: 1480, the range of cylinder diameter: Φ219mm-Φ406mm (as ... designed reference)4. Product material; 30CrMo,35CrMo,34CrMo4,37Mn5. Cylinder wall thickness; 4mm-14mm6. Weight≤300Kg 7.Tested flaw; ... the flaws like crack, fold, interlayer, etc. of cylinder’s internal wall resulted by raw material, flow spinning, ...