The steel strand industry ushered in new developments: a complete analysis of classification, technology and application

Stranded steel wire is a steel product composed of multiple Steel Wires twisted together.

The surface of Carbon Steel can be coated with galvanized layer, zinc-aluminum alloy layer, aluminum clad layer, copper plating layer, epoxy coated layer, etc. as needed.

1、 Classification of Steel Strands

Steel strands can be classified in various ways such as structure, coating material, purpose, and material characteristics. The commonly used classification method is based on structure, including prestressed steel strands, galvanized steel strands, and non bonded steel strands.

2、 Manufacturing process of steel strand

The production and manufacturing process of steel strands is divided into three parts:

The first part is single wire manufacturing, usually using raw materials such as stainless steel wire rods, high carbon steel or low carbon steel wire rods for cold drawing processing as needed to obtain corresponding specifications of single wires. If coating is required, the single wires are then coated.

The second part is the production of stranded wires, which are twisted into steel strands of corresponding specifications using a twisting machine. The prestressed steel strands also need to be stabilized after forming.

The third part is packaging and forming. In order to facilitate transportation and use, it is usually packaged in two forms: shaftless rolls and I-wheels.

3、 Specification and model of steel strand

The general specifications are 1 * 2, 1 * 3, 1 * 7, and 1 * 19, etc., usually followed by the diameter of the single wire, expressed as "1 * 19 φ 5", indicating that one steel strand is made up of 19 steel wires with a diameter of 5mm twisted together.
Galvanized steel stranded wire is usually used for load-bearing cables, guy wires, reinforcing cores, etc. It can also be used as a ground wire for overhead power transmission, a blocking cable on both sides of highways, or a structural cable in building structures. The commonly used prestressed steel strands in prestressed steel strands are uncoated low relaxation prestressed steel strands, as well as galvanized ones, which are commonly used in bridges, buildings, water conservancy, energy, and geotechnical engineering. Non bonded prestressed steel strands are commonly used in floor slabs, foundation engineering, etc. Steel strand is a metal material used to strengthen and support concrete components, and is widely used in engineeringconstruction.

Its main uses and functions are as follows:

1. For prestressed concrete structures: Steel strands are used to generate prestress in prestressed concrete structures. By constraining the steel bars and applying prestress, the concrete can be more tightly bonded to the component, and the load-bearing capacity of the component can be enhanced.
2. Used for cable-stayed bridges: Steel strand is also one of the most commonly used materials in cable-stayed bridges. By tensioning the diagonal cables, the entire bridge deck can be lifted, enhancing the load-bearing capacity of the bridge.
3. For prefabricated buildings: Steel strands are also widely used in prefabricated buildings and can be used to reinforce and support various components of the building.
4. For high-rise buildings: Steel strands can be used for structural reinforcement, improving seismic resistance, and enhancing the stability of the entire building.
5. Used for anchor rods and spray curing: Steel strands can also be used in engineering fields such as anchor rods and spray curing to reinforce, cure, or support geological rock masses, structures, or other facilities.
In summary, as a high-strength and high stability metal material, steel strand has important application value, which can effectively strengthen and support various concrete components, and improve their bearing capacity and stability.