In order to meet the strict requirements for ACSR by utilities, which include, among others, high compact construction and round and smooth surface, a pre twist is added to the tubular strander.

• 根据电力使用部门的需要,对钢芯铝绞线提出了更高的要求,即高度紧密性及表面圆整度和光滑度,为此,在管式绞线机上加装预扭装置,使产品符合了使用要求。