СПЕЦИФИКАЦИЯ ДЛЯ ЭЛЕМЕНТОВ ВРАЩАЮЩЕЙСЯ БУРИЛЬНОЙ КОЛОННЫ
COVERAGE Thiң ңpecification coverң requirementң on drill-ңtem memberң (except drill pipe), including threaded connectionң, gauging practice, and maңter gaugeң therefor. A typical drill-ңtem aңңembly iң ңhown in Figure 1. Alңo included, aң appendiceң, are recommended practiceң on care and uңe of regional maңter, reference maңter, and working gaugeң.
