Standard designs are for left - hand lay opgw . the formed wire dead - end of double - layer reinforced rods usually be applied on long span and high fall of river or valleys as well as tower of 30 - 60turn 该接头盒广泛用于opgw光缆上的直接头或分歧接头,终端塔杆上opgw光缆与普通光缆或线路上opgw光缆与adss光缆的接续。