Hướng dẫn sử dụng, lắp ráp và bảo dưỡng cáp Thép

GENERAL DISCARD RITERIA-RANE ROPES Rope diameter reduction >7% of NRD, only due to external wear. Rope diameter reduction >3% of NRD for rotation resistant ropes and >10% for other ropes due reasons other than external wear. For single layer (6 and 8-strand) and parallel-closed ropes if number of visible broken wires exceed 4% of total…