دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a wire-rope strand design commonly used as drilling line. It consists of a single, central wire around which are laid two additional layers of wire. The inner layer of wires are all the same diameter but are smaller in diameter than the central wire. The outer layer of wires are also all the same diameter but they are thicker in diameter than the inner wiles. A typical Seale strand consists of 19 wires: 1 central wire, 9 inner wires, and 9 outer wires. Several strands are laid together to make the wire rope.