The CST special threaded joint development project of Pangang Group Chengdu Steel and Vanadium Co., Ltd. (hereinafter referred to as Panzhihua Steel) passed the acceptance test recently, which indicates that it has been recognized by the market after its five-year independent development of special buckle products.
In order to break the "special threaded joint" has long been monopolized by a few foreign manufacturers, Pancheng Steel set up an oil well pipe research group from the end of 2010, independently research and development of high-end special oil well pipe. The joint research and development system has worked hard to solve a series of technical problems in the processing technology and evaluation test, which made the CST special thread joint development project finally successful. In early 2014, in order to meet the technical requirements of the users, Panzhihua Steel optimized the original CST-Z direct-connected special buckle thickened end size parameters, and finally formed a 139.7 mm × 7.72 mm CS-140V direct-connected special threaded joint non-standard sleeve. For the first time, it opened up the domestic market and achieved exclusive supply of stable quantities. The CST-M, CST-Z, and CST-ZT non-API special oil-removing well pipes independently developed by the company have won the favor of oilfield users with outstanding performance and price advantages, and have become the high-end fist new products of enterprise innovation and innovation. As of June 2015, the product has sold nearly 25,000 tons. CST series non-API special threaded joint oil well pipes with full intellectual property rights of Pancheng Steel have filled the blank of the company's oil well pipe special buckle market.
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