Certification: | CE, CE& SGS& BV |
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Surface: | Smooth |
Technique: | Ordinary |
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*Low relaxation Pretressed Concrete Strand is twisted by 2 wires, 3 wires, 7 wires or 19 wires, which is applied to high efficiency and energy materials of concrete structures after stabilizing treatment.
*Product characterizes high intensity, high breakage force, high extension, product has a good effect on improving safety coefficient and enhancing anchored force, these features make it be qualified in construction of railways, highways, bridges, mine, nuclear power plant, hydropower, large-span buildings.
*Green products, low relaxation high tensile strength pretressed concrete strand could save at least 30% steel using quantity, effectively reducing carbon dioxide emissions.
7 wires uncoated steel strands could be produced in conformity with more standards:
• BS5896
• ASTMA779
• ISO 6934
• UNE 36094
• JIS3536
• KS D7002
• ABNT NBR7483
• AS/NZS4672
• GOST13840
• GOST-R-53772
PC STRAND GB/T5224-2014, FOR 1X7 PRESTRESSED CONCRETE STEEL STRAND
Structure | Nominal diameter | Tolerance on Diameter | Nominal Area of Section | Weight of strand | Tensile Strength, Rm | Minimum Breaking load,Fm | 0,2% proof force , Fp0.2 | Elongation Lo=500mm, Agt | Curvative of strand | Lay Length | The Relaxation at 1000h (initial load to 70% of nominal max load ) (r/%) Not more than |
(mm) | (mm) | (mm2) | (kg/1000m) | (N/mm2) | KN | KN | (%) | mm | mm | ||
1X7 | 9.5 | +0.30 -0.15 |
54.8 | 430 | 1860 | 102 | 89.8 | 3.5 | Max bow height = 25mm/ 1meter | (12-16)d | 2.5 |
9.5 | 54.8 | 430 | 1960 | 107 | 94.2 | ||||||
11. 10 | 74.2 | 582 | 1860 | 138 | 121 | ||||||
11. 10 | 74.2 | 582 | 1960 | 145 | 128 | ||||||
12. 70 | +0.40 -0.15 |
98.7 | 775 | 1860 | 184 | 162 | |||||
12. 70 | 98.7 | 775 | 1960 | 193 | 170 | ||||||
15.2 | 140 | 1101 | 1860 | 260 | 229 | ||||||
15.2 | 140 | 1101 | 1960 | 274 | 241 | ||||||
15. 70 | 150 | 1178 | 1860 | 279 | 246 | ||||||
17. 80 | 191 | 1500 | 1860 | 355 | 311 |
PC Strand ASTM A416/A416M:2012, 1X7 PRESTRESSED CONCRETE STEEL STRAND
Grade | Nominal diameter | Tolerance on Diameter | Nominal Area of Section | Weight of strand | Tensile Strength | Minimum Breaking load | Minimum load at 1% Extension | Elongation Lo=610mm | Lay Length | The Relaxation at 1000h (initial load to 70% of nominal max load ) (r/%) Not more than | |||
(mm) | (in.) | (mm) | (mm2) | (in.2) | (kg/ 1000m) | (lb/ 1000ft) | (N/mm2) | (KN) | (KN) | (%) | mm | ||
270 (1860) |
9.53 | 3/8 | +0.65,-0.15 | 54.8 | 0.085 | 432 | 290 | 1860 | 102.3 | 92.1 | 3.5 | (12-16)d | 2.5 |
11.11 | 7/16 | +0.65,-0.15 | 74.2 | 0.115 | 582 | 390 | 1860 | 137.9 | 124.1 | ||||
12.7 | 1/2 | +0.65,-0.15 | 98.7 | 0.153 | 775 | 520 | 1860 | 183.7 | 165.3 | ||||
15.24 | 3/5 | +0.65,-0.15 | 140 | 0.217 | 1102 | 740 | 1860 | 260.7 | 234.6 | ||||
17.78 | 7/10 | +0.65,-0.15 | 189.7 | 0.294 | 1487 | 1000 | 1860 | 353.2 | 318 |
PC STRAND pr EN10138-3:2011, 1X7 PRESTRESSED CONCRETE STEEL STRAND
Steel Name | Steel Number | Diameter | Tensile strength | Cross-sectional area | Mass per meter | Permitted deviation on mass per meter | Characteristic value of maximum force | Maximum value of maximum force | Characteristic value of 0.1% proof force | Min. Elong. Lo=500mm |
Curvative of strand | Lay Length | Relaxation 1000h value no more than (initial load at 70% specified breaking load) |
D | Rm | Sn | M | Fm | Fm,max | Fp0.1 | |||||||
mm | MPa | mm2 | g/m | % | kN | kN | kN | % | mm | mm | (%) | ||
Y1860S7 | 1.1366 | 9.3 | 1860 | 52 | 406.1 | ±2 | 96.7 | 111 | 85.1 | 3.5 | Max bow height = 25mm/ 1meter | (14-18)d | 2.5 |
Y1860S7 | 1.1366 | 12.5 | 1860 | 93 | 726.3 | ±2 | 173 | 199 | 152 | ||||
Y1860S7 | 1.1366 | 15.2 | 1860 | 139 | 1086 | ±2 | 259 | 298 | 228 | ||||
Y1860S7 | 1.1366 | 15.7 | 1860 | 150 | 1172 | ±2 | 279 | 321 | 246 | ||||
Y1960S7 | 1.1367 | 9.3 | 1960 | 52 | 406.1 | ±2 | 102 | 117 | 91 | ||||
Y1960S7 | 1.1367 | 12.5 | 1960 | 93 | 726.3 | ±2 | 182 | 209 | 162 | ||||
Y2060S7 | 1.1368 | 12.5 | 2060 | 93 | 726.3 | ±2 | 192 | 221 | 171 | ||||
Y2060S7 | 1.1368 | 12.9 | 2060 | 100 | 781 | ±2 | 206 | 237 | 183 | ||||
Y2060S 7G* |
1.1372 | 12.7 | 1860 | 112 | 874.7 | ±2 | 208 | 239 | 183 | ||||
Y2060S7G* | 1.1372 | 15.2 | 1860 | 165 | 1289 | ±2 | 307 | 353 | 270 | ||||
Y1700S7G* | 1.137 | 18 | 1700 | 223 | 1742 | ±2 | 379 | 436 | 334 |