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为了有计划的大幅度增加石油和天然气的开采量,因此要求增加石油管的产量,并提高其质量。全苏钻探技术科学研究院设计了钻杆(ТВВК、ТБНК和外加厚油管(НКБ—1)的新结构。由于稳定矿带的存在,这种结构可以大大提高连接强度。可是,这样一来,加厚的端部直径和长度也明显增加,因此在外部加厚过程中遇到了巨大的困难。为了生产这种钢管,全苏管材研究所和阿塞拜疆轧管厂进行了专门研究,说明按现行工艺生产这种直径和长度增大的外部加厚钢管是不可能的,按老工艺生产,管子上形成了夹层,或者是加厚段的整个断面没有充满;并且发生了加厚工具的断裂和辅助另件的
In order to plan a substantial increase in oil and gas production, it is required to increase the production of oil pipelines and to improve their quality. All-Su Drilling Institute of Technology designed a new structure for drill pipe (ТВВК, ТБНК and НКБ-1) which can greatly improve the connection strength due to the stable mineral belt. , The thickening of the end diameter and length also increased significantly, so in the external thickening process encountered tremendous difficulties.In order to produce this kind of steel pipe, All-Su Pipe Institute and the Azerbaijani Mill have conducted a special study shows that the current It is not possible to produce an externally thickened steel tube of increased diameter and length in the process. According to the old process, the tube is formed with a sandwich or the entire section of the thickened section is not filled; and the thickened tool breaks and Auxiliary pieces