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Help Center(Factory) GRADE 270 Low Relaxation 15.24mm PC Strand
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GRADE 270 Low Relaxation 15.24mm PC Strand
15.24mm PC Strand Advantage :
1.We are professional manufacturer
2.We have been approved by ISO9001:2008
3. We have whole set of production equipment and inspect instrument
15.24mm PC Strand Descriptions :
1.Structure:1*7
2.W.T: 2 MT- 4MT
3.Length:1800-3600m / reel
4.Material: High carton steel wire 77B, 82B
5.Diameter: 12.7mm,15.2mm,15.24mm,15.7mm
6.Tensile strength (TS) : 1670Mpa, 1770Mpa, 1860Mpa
7.Standard: ASTM A416 ,GB/T5224(China)ASTMA421(USA);BS 896(UN);
JIS G3536(Japan);AS/NZS4672(Australia);NBR-7483(Brazil);
EN10138(Europe);ISO934
8. Type : PC strand, Prestresses concrete steel strand, Unboned pc strand, PC wire , Spiral pc wire ,Plain pc wire ,indented pc wire
9. Cerfificate : ISO9001:2000 SGS, China National Construction Steel Qulity Supervision and Test Centre Product Quality Supervision and Inspection Center, Ministry of Railways Railway Construction Inspection Station
7 wire PC strand Usage (Application)
1. For highways, bridge, building, key water control project, nuclear power plant
2. As floor and roof reinforcement for sports stadiums
3. At many projects of post tension and pretension prestress,smooth steel strand is the most popular steel. The compact steel strand is mostly used for lifting projects and some like nuclear power engineering.
7 wire PC strand Technical Specification
1.Continued drawing with large deduction stranding then stabilizing treatment.
2.High rate of yield strength and ultimate strength, Low relaxation ,
Steady modulus of elasticity, stress relieved, high fixed with Concrete.
pc strand Standard ASTM A 416 | |||||||||
Grade | Normal Diameter (mm) | Tolerance (mm) | Area of section (mm2) | Theoretical Weight per 1000 metre | Minimum breaking strength (KN) | Minimum load atpercent extension (KN) | Elogation (%) | Relaxation after 1000hrs at | |
Initial Load 70% | Initial Load 80% | ||||||||
250 | 9.53 | +/-0.40 | 51.61 | 405 | 89.0 | 80.1 | 3.5 | 2.5 | 3.5 |
11.11 |
| 69.68 | 548 | 120.1 | 108.1 | ||||
12.70 |
| 92.90 | 730 | 160.1 | 144.1 | ||||
15.24 |
| 139.35 | 1094 | 240.2 | 216.2 | ||||
270 | 9.53 | +0.65 | 54.84 | 432 | 102.3 | 92.1 | 3.5 | 2.5 | 3.5 |
11.11 | -0.15 | 74.19 | 582 | 137.9 | 124.1 | ||||
12.70 |
| 98.71 | 775 | 183.7 | 165.3 | ||||
15.24 |
| 140 | 1102 | 260.7 | 234.6 | ||||
pc strand Standard BS5896 | ||||||||
Strand | Normal | Tensile | Specified | Load at 1% | Minimum | Relaxation Value 1000h | ||
Initial | Initial | Initial | ||||||
Load 60% | Load 70% | Load 80% | ||||||
7-wire standard | 9.3 | 1770 | 92 | 81 | 3.5 | 1 | 2.5 | 4.5 |
11 | 1770 | 125 | 110 | |||||
12.5 | 1770 | 164 | 144 | |||||
15.2 | 1670 | 232 | 204 | |||||
7-wire super | 9.6 | 1860 | 102 | 90 | 3.5 | 1 | 2.5 | 4.5 |
11.3 | 1860 | 139 | 122 | |||||
12.9 | 1860 | 186 | 163 | |||||
15.7 | 1770 | 265 | 233 | |||||
7-wire drawn | 12.7 | 1860 | 209 | 184 | 3.5 | 1 | 2.5 | 4.5 |
15.2 | 1820 | 300 | 255 | |||||
18 | 1700 | 380 | 323 | |||||
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