Prestressed steel strand and prestressed steel wire mainly have the following differences:

1. Different execution standards.

2. Different shapes.

Prestressed steel strand is twisted together by 3 to 12, its appearance also has threaded groove, but along with the number of different and groove number is different also, but the steel strand still can see a steel wire in each share from the appearance. The prestressed steel strand used in prestressed concrete works is generally 7 strands, and the diameter and strength of each strand are different. Its specification is expressed by strength level, number of shares, single strand diameter (or total diameter); The prestressed steel wire is a single degree of reinforcement, divided into different diameters.

3. Different uses.

Prestressed steel strand is mainly used in roads, Bridges and prestressed reinforced concrete. In addition, it is also used in the construction of large international airports, water conservancy DAMS, concrete protective walls of nuclear power plants and high-rise buildings. Among the successful cases of Tianjin steel strand manufacturers, the construction of Guangzhou New Baiyun International Airport contracted by Baoding Yinyan in 2007 successfully used prestressed steel strand as the building material;

The prestressed steel wire is widely used in concrete electric pole, prestressed concrete bridge, pressure water pipe, railway sleeper and large span roof truss and special structure of housing project.

4. Different bundling methods.

And prestressed steel strand is twisted by many steel wires (2, 3, 5, 7), prestressed steel wire is usually refers to a single diameter of 3~6mm steel wire. When using the steel strand is generally a number of roots (according to the design calculation, generally not more than 7) as a bundle, and the steel wire is dozens of a bundle.

5. Different production techniques.

In order to prolong the durability, the prestressed steel wire can have metal or non-metal coating or coating, such as zinc plating, coated with epoxy resin, etc. In order to increase the grip force with concrete, the surface can be notched. After stranding, the prestressed steel strand is compressed by the die. The structure is more compact and the surface is more suitable for holding anchor. The production of unbonded prestressed steel strand is made of ordinary prestressed steel strand, coated with anti-corrosion grease or paraffin and then covered with high density polyethylene (HDPE).