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钻杆是石油钻探的主要基础件。迄今,只有少数技术先进国家能够制造,我国基本依靠进口。焊接是钻杆制造的技术关键之一。1972年太原重机厂、哈尔滨焊接研究所共同接受石油钻杆摩擦焊工艺及焊机拟制任务。当年做了初步的工艺试验并设计了焊机。但是,由于“四人帮”对生产的破坏,直到1975年焊机才装配试车,年末在大港油田做了φ140毫米钻杆的焊接工艺试验。在以英明领袖华主席为首的党中央一举粉碎
Drill pipe is the main foundation for oil drilling. So far, only a handful of technologically advanced countries can make it, and our country basically relies on imports. Welding is one of the key technologies for making drill pipe. In 1972 Taiyuan Heavy Machinery Factory, Harbin Welding Institute jointly accepted the oil drill friction welding technology and welding quasi-preparation tasks. That year did a preliminary process test and design of the welder. However, due to the “Gang of Four” on the production of damage, until 1975, the welding machine assembly test, the end of the Dagang Oilfield made φ140 mm drill pipe welding process test. Crushed the party Central Committee led by Chairman Hua, the wise leader