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      In 1995,1st Machinery Works introduced a full set of production technology and equipment from Japan NKK to build the first drill pipe production line in domestic, in 2008, it choosed the most advanced equipments from UK, Germany and Japan to complete its 2nd production line. Up to now, 1st Machinery Works has a complete production chain of drill pipe, including important working procedures such as pipe end upsetting, heat treatment, thread cutting, pressure friction welding etc. The main products cover full range of API drill pipe, shell NS - 1 standard drill pipe, besides, it also can provide drill pipes requested by the customers which are used in complex well conditions such as conditions of deep well and super deep well as well as the large displacement horizontal well, crossing project. Exploration of unconventional oil and gas resources, high corrosion well, etc. its annual production capacity can reach 35,000 tons.