GOST R 56349-2015 石油和天然气工业用钻探设备的钻探管和其他构件. 第2部分. 螺纹肩式连接的基本参数和检验. 通用技术要求
Drill pipes and other elements of drilling equipment for petroleum and natural gas industries. Part 2. Basic parameters and inspection of thread shouldered connection. General technical requirements