Unbonded steel strand: Applications of steel strand

　　Steel strands are commonly used in the production of prestressed concrete for prefabricated beams and floor slabs used in various construction projects and bridge constructions. The main constituent material of steel strand is steel wire, which is a steel product made by twisting steel wires together. In daily use, electroplating can be applied to the surface if necessary. For example, zinc plating, copper plating, etc.

　　Unbonded steel strand: Uses of steel strand

　　Steel strands are frequently used at construction sites, where materials are often transported, and these materials are usually heavy and require lifting and transportation. In this case, these devices can perform very well. With these devices, these tasks can be carried out very smoothly. These devices are very tough and can carry very heavy things. This will inevitably bring great help to our work. In addition, some of our excavation work can even use steel strands.

　　These materials are usually connected to our drill bits, so we can achieve very good productivity when using them. We believe that when using these materials, if we can properly handle these aspects of the work, we will inevitably be able to use these devices in the right places. We believe that with the use of steel strands, we will surely be able to obtain very good efficiency guarantees in our work. This is what we should do when doing this work.

　　Unbonded steel strand: Manufacturing process of steel strand

　　The manufacturing process is divided into single-wire manufacturing and twisting manufacturing. When manufacturing single wires, "cold" drawing technology is used. The materials for different products are high-carbon steel wire rods, stainless steel wire rods, or medium and low-carbon steel wire rods, but when zinc plating is required, the single wires should be electroplated or hot-dip galvanized. In the strand manufacturing process, a twisting machine is used to twist multiple steel wires together to form the product, but prestressed steel strands need to undergo continuous stabilization treatment after forming, and the products are generally stored in I-beam wheels or wound without a shaft.

　　Unbonded steel strand: Classification of steel strand

　　Steel strand is a steel product made by twisting multiple steel wires together. A zinc layer, zinc-aluminum alloy layer, aluminized layer, copper layer, epoxy resin coating, etc. can be added to the surface of the carbon steel as needed.

　　1. Classification by use: Prestressed steel strand, galvanized steel strand, and stainless steel strand. Among them, after applying anticorrosion grease or paraffin wax to the prestressed steel strand, the wrapped material is subjected to unbonded prestressing.

　　2. Unbonded steel strands are classified according to material properties: Aluminum-clad steel strands and stainless steel strands.

　　3. Classification by structure: Prestressed steel strands are classified into 7-wire, 2-wire, 3-wire, and 19-wire structures according to the number of steel wires, with the 7-wire structure being commonly used. Power galvanized steel strands and aluminum-clad steel strands are also classified into 2, 3, 7, 19, 37, etc. structures according to the number of wires, with the 7-wire structure being commonly used.

　　4. Unbonded steel strands with different surface coatings: Glossy surfaces include steel strands, galvanized steel strands, epoxy-coated steel strands, aluminum-clad steel strands, copper-plated steel strands, and externally clad steel strands