Spiral Rib Prestressed Steel Wire

Spiral rib prestressed steel wire is a kind of steel wire made of carbon steel wire material, and used in prestressed concrete structures.

High-strength, low-relaxation, supply in coil, large-length, low-consumption, spiral rib steel wire has strong bond with concrete.

Spiral Rib prestressing steel wire typically comes in various diameters to suit different applications. The diameter ranges commonly available in the market include 3.0mm, 3.2mm, 3.4mm, 3.8mm, 4.0mm. The selection of the wire diameter depends on factors such as the magnitude of the expected loads, the size of the structural element, and the engineering design criteria.

What makes this product different from other factory's prestressed steel wire ?

We adopt pickling and phosphating technology.

Our pc wire's bending times of 180 degrees is more than 10.

Inquire Now

ADVANTAGES

High Tensile Strength, very low relaxation.

1. Increased Structural Strength: Spiral Rib Prestressed steel wire is designed to withstand high tension forces. By introducing pre-compression into the structure, it enhances the overall structural strength and load-bearing capacity. This allows for the construction of longer spans, thinner sections, and taller structures without compromising on stability and safety.

2. Improved Flexibility and Design Possibilities: Spiral Rib Prestressing steel wire provides designers and engineers with greater flexibility in designing structures. The pre-compression introduced by the wire allows for the reduction or elimination of traditional reinforcement, resulting in slimmer and more aesthetically pleasing designs. It enables the creation of innovative architectural elements and the optimization of material usage.

3. Enhanced Durability: Spiral Rib Prestressed concrete steel wire helps increase the durability of structures. By counteracting the tensile forces that develop over time, it minimizes the risk of cracking and deformation in concrete members. This extends the service life of the structure and reduces maintenance and repair costs over the long term.

4. Improved Resistance to Deflection: The pre-compression introduced by prestressed steel wire helps counteract deflection and deformation caused by external loads. It provides better control over the behavior of structures under various loading conditions, ensuring minimal sagging or bending. This is especially beneficial in applications where stringent deflection criteria need to be met.

5. Faster Construction and Reduced Construction Time: Spiral Rib Prestressed steel wire allows for faster construction compared to conventional reinforcement methods. Pre-tensioning or post-tensioning techniques can be used to apply the necessary pre-compression, reducing the time required for formwork, concrete curing, and overall project completion. This acceleration in construction can result in cost savings and earlier occupancy or utilization of the structure.

6. Optimized Material Usage and Cost Efficiency: The use of spiral rib prestressing steel wire enables the optimization of material usage, resulting in cost savings. By strategically placing the wires in areas subjected to high tensile stresses, it minimizes the need for additional reinforcement, reducing material quantities and associated costs.

7. Improved Crack Control: Spiral Rib Prestressed steel wire helps control and limit crack widths in concrete structures. By introducing compressive stresses, it counteracts tensile stresses, reducing the likelihood and width of cracks. This is particularly important in structures where crack control is essential, such as water-retaining structures or structures exposed to aggressive environments.

USE

Spiral Rib Prestressed steel wire can be used in prestressed concrete utility poles, prestressed concrete hollow slabs, prestressed concrete sleepers, express railway prestressed concrete sleeper plates, prestressed concrete water pipes, and other components.

Prestressed concrete wire is primarily used in the construction industry for reinforcing concrete structures. It is a high-strength steel wire that is subjected to a process called prestressing, where it is placed under tension before being embedded in the concrete.

The main purpose of Spiral Rib prestressed concrete wire is to counteract the tensile forces that occur in concrete structures. While concrete is strong in compression, it is relatively weak in tension. By introducing prestressed concrete wire, the tensile strength of the overall system is significantly increased.

Spiral Rib Prestressed concrete wire is commonly used in the construction of bridges, high-rise buildings, parking structures, and other large-scale infrastructure projects. It allows for the construction of longer and more slender members, reduces the number of support columns needed, and improves overall structural performance.

The process of spiral rib prestressing involves stretching the wire to a predetermined tension using specialized equipment. Once the wire is tensioned, it is anchored to the surrounding concrete, transferring the compressive forces from the wire to the concrete structure. This compression helps to counterbalance the tensile forces that the structure will experience during its service life, enhancing its load-carrying capacity and durability.

SPECIFICATIONS

Specifications: (Standard: GB/T5223-2014)

Nominal Diameter	Nominal Tensile Strength	Characteristic value of maximum force	Maximum value of maximum force	Characteristic value of 0,1% proof force	Bending Times		Elongation(Lo=200mm)	1000h relaxation
mm	Rm, Mpa	Fm ,kN	Fm, max，kN	Fp0,2 ,kN	time/180°	bend dia,R/mm	Agt%	r / %
3.0	1770	12.51	13.85	≥11.01	≥3	10	≥3.5	≤2.5
3.2	1770	14.23	15.76	≥12.63	≥3	10	≥3.5	≤2.5
3.4	1770	16.07	17.8	≥15.16	≥3	10	≥3.5	≤2.5
3.8	1770	20.07	22.22	≥17.80	≥3	10	≥3.5	≤2.5
4.0	1770	22.25	24.76	≥19.58	≥3	10	≥3.5	≤2.5
4.0	1860	23.38	25.89	≥20.57	≥3	10	≥3.5	≤2.5

Nominal Diameter	Nominal Diameter Tolerrance	Nominal section area	Mass of the wire
mm	mm	mm²	g/m
3.0	±0.04	7.07	55.5
3.2	±0.04	8.04	63.1
3.4	±0.04	9.08	71.3
3.8	±0.04	11.34	89.0
4.0	±0.04	12.57	98.6