Production line of the precise hot rolling seamless steel pipe adopts the leading technology ARCCU ROLL rolling system, which can manufacture the raw pipe for the casing, tubing, drill pipe body, coupling, line pipe and etc. The production line is built by Shengli Oilfield Highland Petroleum Equipment Co. Ltd. and Changzhou Darun Steel Pipe Co. Ltd. It is designed to have a 150 kt per year productive capacity. The productive range is from Φ60~180mm and the maximum length is 13m.