Hot strip mill production units of the varieties and quality levels in addition to mill their own skills, to a large extent by the smelting and casting constraints, so advanced smelting process should refer to the complete processing flow tube. Internationally famous stainless steel companies are the professional integrity of the steel pipe factory or joint venture, by outsourcing manufacturing seamless pipe billet of enterprises in the fierce market competition Zhanwen position. The use of electric arc furnace or a converter smelting LF refining furnace vacuum treatment of a VD-wide protection of pouring a casting tube round a hot rolling mill (NPN, PQF) a processing, today's advanced production process of seamless steel pipe, using The above process can produce OCTG such as high-pressure boiler tubes, high pressure, such as alloy tube. Tianjin Pipe Corporation, Baoshan Iron and Steel Traders (steel) company, Anshan Iron and Steel Factory seamless, seamless steel plants have to achieve the above-mentioned process, scale, and Hengyang Steel Tube Seamless Gang also did not pay close attention to supporting the project to build the near future to achieve the above-mentioned process. For the smelting equipment, electric arc furnace or converter capacity of not less than 70 a lOOt, to create the conditions for ladle refining, full attention should be rolling units line detection means and automatic control system, equipped with advanced detection systems, location-based and high-pressure oil pipe Boiler tube production line, should be equipped with a high level of heat treatment and processing systems, the progressive realization of heat and hot charging of billets and online delivery of regular, air-cooled, such as controlled rolling process.