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Prestressed Material
12k7 Gost13840 1x7 Reinforced steel ropes is the pc strand in accordance with Russia industry standard. We have a deep understanding to this industry standard and have many year’s produce experience.
SPECIFICATIONS
12k7 Gost13840 pc strand has following technical parameter,
| Rope diameter , D, mm | Tolerance from the nominal diameter, mm | Wire diameter, mm | Nominal cross sectional area ,mm2 | Nominal weight of 1 m length， kg | Lay Lenth， mm | Breaking force | Yield Force ,F0.2 | Elongation, | Tensile Strength | Yield Strength | Relaxation on initial load of 0.7 from the actual breaking strength over a period of 1,000 h, %, not more | |||
| Conditional | Nominal | Outer Wire | Center Wire | kN (kgf) | kN (kgf) | % | N/mm2，(kgf/mm2） | N/mm2，(kgf/mm2） | Normal | Low | ||||
| 12,0 | 12.4 | (+0,2 -0,4) | 4,10 | 4,20 | 93 | 0,736 | (12-16)D | 164,01 (16700) | 139,5 (14200) | 4,0 | 1770 (180) | 1500 (153) | 8 | 2.5 |
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