The dimension of the rolled ring is as following: the outer diameter is from 800mm to 5000mm, the height is from 80mm to 700mm and the max. thickness of rough ring is 450mm. We have all kinds of material in stock provided by the most famous steel suppliers of China, such as alloy steel, carbon steel and special steel. So we can meet your all types of demand of forgings and offer the product in high quality asap.