Steel Wire Strand:

1.Low relaxation high tensile strength

3. Tensile Strength: 1770Mpa  1860Mpa  1960Mpa  2000Mpa

                1*2 Diameter: 8.0mm 10.0mm 12.0mm

                1*3 Diameter: 8.60mm 8.74mm 10.80mm 12.90mm

                1*7 Diameter: 9.3mm 9.5mm  11.1mm  12.5mm 12.7mm 15.2mm  15.7mm 17.8mm 18.mm

7.The third party inspection: BV SGS China national construction steel quality supervision and test centre

8.  Packing: Each coil is strapped by steel bands and packed strongly by kraft and polypropylene woven sheet with wooden palle

Prestressed steel strand is 3,7, or 19 high-strength steel wire composed of twisted steel cable, and after the elimination of stress treatment (stabilization treatment) for prestressed concrete or similar purposes.

The main characteristics of prestressed steel strand and relaxation properties of high strength is good, other than the upright when expanded. Common tensile strength rating of 1860 MPa, as well as 1720,1770,1960,2000,2100 MPa strength grade of the class.

3.National standards:

All countries have a standard for pre-stressed strand, such as: China Standard GB / T 5224, American Standard ASTM A416, British Standard BS 5896 and the Japanese standard JIS G3536, Australia and New Zealand Standard AS / NZS 4672, the Brazilian Standard NBR-7483

In most post-tensioning and pre-tensioned prestressed engineering, smooth strand is the most widely used in prestressed steel. Die pulling strand is mainly used for upgrading works, but also in the category of nuclear power projects. Galvanized steel strand tied commonly used in the bridge, cables, and external prestressing works. The use of epoxy coated and galvanized steel strand prestressed strand is similar.

5.Categories:
In accordance with a strand of steel wire strand number can be divided into two, three wire strand, 7-wire strand and 19 strand wire. In accordance with the surface morphology can be divided into smooth strand strand nicks, mode pulling strand (compact), galvanized steel strand, epoxy coated strand and so on. You can also according to diameter, or intensity level, or standard classification.

6.Manufacturing methods:
High-carbon steel wire rod, after a surface treatment after the cold drawing into wire, and then structure a certain amount of steel wire strand twisted synthetic stock, and then through the elimination of the stabilization process of stress made. To extend the durability, wires can have metal or non-metallic coating or coating, such as galvanized, coated epoxy resins. To increase the bond strength with concrete, the surface could have scored and so on. Die pull of the prestressed steel strand in the strand through a die after the compression process, the structure is more compact, more suitable anchor grip surface. Production of strand (unbonded steel strand) the ordinary pre-stressed strand coated anti-corrosion grease or wax after the package of high-density polyethylene (HDPE) to become.