... -400mm 2.width:864-4020mm 3.material:Q345 C/D/E,Q390,Q420,Q500,S355 JO/J2/J2G3/K2/N, A572 ... steelthree blades dynamically balanced lower cyclic loads with simple rigid hub high quality material 1.Thickness:1.5-400mm2.width:864 ... -4020mm3.length:2000-23000mm4.material:Q345 C/D/E,Q390,Q420,Q500,S355 JO/J2/J2G3/K2/N, A572 ...