最新国产一级二级三级视频视频_久久9999无码精品亚洲日韩_精品视频在线99_日韩 偷拍 麻豆_宅男的天堂榴莲app官网_亚洲精品美女国产极品在线_亚洲日产中文字幕_?V无码黄色毛骗_av午夜免费观看_成人自拍视频在线观看_中文国产成人精品久久`_亚洲精品文字幕第二区

When the wire rope is subjected to tensile load, there will be different stages of stretching, so the wire rope will often remind the user to pre-stretch the wire rope. In turn, many customers will ask why the wire rope elongation?

There are many influencing factors that can lead to the elongation of the wire rope in use, and the elongation caused by some enterprise factor analysis is very small, usually we can ignore it. It is usually the main problem causing the elongation of the wire rope for the following reasons, of which the first two are the most important factors.

(a) Elongation resulting from adjusting the position of each strand of wire and wire rope in each strand - often referred to as structural elongation.

(b) Elastic elongation due to load tension.

(c) Elongation or shortening due to changes in temperature.

(d) Elongation resulting from an increase in lay length due to the use of a wire rope which can be rotated freely through one end.