o.d.232mm-406mm, capacity 50-145 litre. Material: 30CrMo, 34CrMo4, 35CrMo, 34Mn2V. MaterialC%Rm ,MPa ReL ,MPa A , External diametermmWall-thickness/mmNon straightnessLength/mRoundness30CrMo0.26/0.34 ≥910 ≥765 ≥12 232±0.75% 273±0.75% 325±0.75% 356±0.75% 406±0.75% 4.2,+15%,-04.8,+15%,-05.0, +15%,-05.6, +15%,-01.5mm/M3-10.5 ≤0.5%diameter 35CrMo0.32/0.40 ≥960 ≥825 ≥12 34CrMo40.30/0.37 ≥980 ≥835 ≥12 ...