... normally used for wind electric generation petrol industry,mine industry,bearing alloy steel 1) Dimension RANGEDiameter350mm~3000mmThickness45mm~650mmWeight200kg~6000kg2) MaterialCarbon steel: AISI ... 1020, AISI 1035, AISI 1045, GrD( Q235), Gr50 ( Q 345)Alloy Steel: AISI 1053, AISI A387Cr.12, 20CrMo, AISI 4137, AISI ...