The range of use of the three-strand rope is very wide, and the amount of use is very large. What are the evaluation criteria for the three-strand rope? Let us know about it together.

It is generally made of gray-yellow twine, with a length of 6 meters and a weight of 0.15 kilograms. The tensile strength is larger than that of the tie rope, the defects are perishable, and the cost is high.

The varieties include nylon multifilament (line), polypropylene filament (line), polypropylene, polyester, polypropylene/polyester blend and other products. Its products have a wide range of applications, such as high strength, low elongation, wear resistance, corrosion resistance, soft and smooth, easy to operate. At the same time, special ropes such as anti-static can be made.

The three indicators of judging whether the three-strand rope and the three-strand twist rope are up to standard are divided into three indicators:

1, twist

When the yarn or the nylon thread is twisted, the two sections produce the same number of revolutions, which is expressed by the number of turns in the unit length, which is called the twist.

2, the corner

The roundabout is used to measure the degree of twisting of different thick slivers. The busbar that has been twisted and becomes a cylindrical spiral is unfolded, and the pitch is L. The spiral is expanded in the pitch to be a right-angled triangle. The tangent to any point on the helix is at an angle β to the axis, called the meander angle.

3, banner

When twisted, the length of the arc that is rotated in a unit length by a point on the yarn section is called a web.

Through the above evaluation criteria, the quality and quality of the three strands can be correctly judged.