China High quality besi beton stainless Factory – The Best Steel Prestressed Engineering Prestressed Concrete Steel Strand – Future Metal
China High quality besi beton stainless Factory – The Best Steel Prestressed Engineering Prestressed Concrete Steel Strand – Future Metal Detail:
Prestressed steel strand is a stranded steel cable composed of 2, 3, 7 or 19 high-strength steel wires, and has undergone stress relief treatment (stabilization treatment), suitable for prestressed concrete or similar purposes.
The main characteristics of prestressed steel strands are high strength, good relaxation performance, and relatively straight when unfolded. The common tensile strength grade is 1860 MPa, and there are strength grades such as 1720, 1770, 1960, 2000, and 2100 MPa. The yield strength of this steel is also very high.
The high-carbon steel wire rod is cold-drawn into steel wire after surface treatment, and then a certain number of steel wires are twisted into strands according to the steel strand structure, and then they are formed through a stress-relieving stabilization process. In order to extend the durability, the steel wire can have metal or non-metal plating or coating, such as galvanizing, epoxy coating, etc. In order to increase the bond strength with the concrete, the surface may have nicks and so on. The molded prestressed steel strand undergoes a mold compression process after stranding, the structure is denser and the surface layer is more suitable for anchoring. To make unbonded steel strands (unbonded steel strands) use ordinary pre-stressed steel strands, coated with anti-corrosion grease or paraffin wax, and then wrapped with high-density polyethylene (HDPE).
Mechanical properties
| Dn/mm | Tensile strength
Rm/MPa |
Maximum force of the whole steel strandFm/KN | Specified non-proportional extension force
FP0.2/KN |
Maximum force total extension
（L0≥500 mm）Agt/% |
Stress relaxation performance |
Executive standard | |
| The initial load is equivalent to the maximum percentage of the nominal/% | Stress relaxation rate after 1000hr/% | ||||||
|
15.2 |
≥1860 |
≥260 |
≥234 |
≥3.5 |
70 |
≤2.5 |
GB/T5224-2014 |
|
80 |
≤4.5 |
||||||
|
15.24 |
≥1860 |
≥260.7 |
≥234.6 |
≥3.5 |
70 |
≤2.5 |
ASTMA416-2003 |
Size and deviation
|
Dn/mm |
Allowable deviation of diameter/mm |
Reference cross-sectional area sn/mm2 |
|
15.20 |
+0.40 -0.20 |
140 |
|
15.24 |
+0.65 -0.15 |
140 |
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Sticking towards the principle of "Super High-quality, Satisfactory service" ,We've been striving to become a superb business partner of you for China High quality besi beton stainless Factory – The Best Steel Prestressed Engineering Prestressed Concrete Steel Strand – Future Metal , The product will supply to all over the world, such as: Algeria, British, El Salvador, Look forward to the future, we'll focus more on the brand building and promotion . And in the process of our brand global strategic layout we welcome more and more partners join us, work together with us based on mutual benefit. Let's develop market by fully utilizing our in depth advantages and strive for building.
By Griselda from Italy - 2018.06.28 19:27
This enterprise in the industry is strong and competitive, advancing with the times and develop sustainable, we are very pleased to have a opportunity to cooperate!
By Jill from Irish - 2017.09.30 16:36