- Standard: GOST Р 53772-2010
- Diameter range, mm: 6,9-15,2
- Tensile strength, MPa: 1770, 1860
Instruction for unwinding reinforcing strands (ropes)
Coils of reinforcing strands (ropes) are marked with a paper self-adhesive label with the image “arrow” to indicate the direction of unwinding of the strand in the following order (Figure 1):
– On the reinforcing strands (ropes) of the right twist, the arrow is directed inside the coil;
– On reinforcing strands (ropes) of the left twist, the arrow points outward of the coil.
Figure 1 Direction of unwinding of a strand (rope)
To avoid tangling of strands (ropes) during their processing, it is necessary to unwind a reinforcing strand (rope) depending on the direction of stranding (rope) in the direction indicated by the arrow (Figure 1).
The dimensions and properties of the strands according to GOST Р 53772-2010
| Nominal values | Calculated values | |||||||
| Strand diameter d, mm | Tensile strength Rm, N/mm2 | Cross-section area Sn, mm 2 | Mass of one meter length M, g/m | Allowable deviation from the mass of one meter length, % | Minimal breaking force kN
| Minimal strength at conditional yield strength σ0,1, kN,
| Maximum acceptable breaking force, kN | The minimum value of the total elongation at maximum load, Agt, with Lo ≥ 500 mm, %
|
| 7-wire | ||||||||
| 6,9 | 1770 | 29 | 226,5 | ±2,0 | 51,3 | 45,1 | 59 | 3,5 |
| 6,9 | 1860 | 29 | 226,5 | ± 2,0 | 53,9 | 47,4 | 62 | 3,5 |
| 9,0 | 1770 | 50 | 390,5 | ± 2,0 | 88,5 | 77,9 | 102 | 3,5 |
| 9,0 | 1860 | 50 | 390,5 | ± 2,0 | 93,0 | 81,8 | 107 | 3,5 |
| 9,3 | 1770 | 52,0 | 406,1 | ± 2,0 | 92,0 | 81,0 | 106 | 3,5 |
| 9,3 | 1860 | 52 | 406,1 | ± 2,0 | 96,7 | 85,1 | 111 | 3,5 |
| 9,6 | 1770 | 55 | 429,6 | ± 2,0 | 97,4 | 85,7 | 112 | 3,5 |
| 9,6 | 1860 | 55 | 429,6 | ± 2,0 | 102,0 | 89,8 | 117 | 3,5 |
| 11,0 | 1770 | 70 | 546,7 | ± 2,0 | 124,0 | 109,0 | 143 | 3,5 |
| 11,0 | 1860 | 70 | 546,7 | ± 2,0 | 130,0 | 114,0 | 150 | 3,5 |
| 12,5 | 1770 | 93 | 726,3 | ± 2,0 | 165,0 | 145,0 | 190 | 3,5 |
| 12,5 | 1860 | 93 | 726,3 | ± 2,0 | 173,0 | 152,0 | 199 | 3,5 |
| 12,7 | 1770 | 98,7 | 775 | ± 2,0 | 175,0 | 154,0 | 207,0 | 3,5 |
| 12,7 | 1860 | 98,7 | 775 | ± 2,0 | 184,0 | 162,0 | 216,0 | 3,5 |
| 12,9 | 1770 | 100 | 781,0 | ± 2,0 | 177 | 156 | 204 | 3,5 |
| 12,9 | 1860 | 100 | 781,0 | ± 2,0 | 186,0 | 164,0 | 214,0 | 3,5 |
| 15,2 | 1670 | 139 | 1086,0 | ± 2,0 | 232,0 | 204,0 | 274,0 | 3,5 |
| 15,2 | 1770 | 139 | 1086,0 | ± 2,0 | 246,0 | 216,0 | 290,0 | 3,5 |
| 15,2 | 1860 | 139 | 1086,0 | ± 2,0 | 259,0 | 228,0 | 298,0 | 3,5 |
| Note a. The elastic modulus (E) can be taken as 195 GPa (kN / mm2) Note b. The nominal linear density (mass of one meter of length) of the product is calculated from the cross-sectional area and density of 7.81 kg / dm3. Note c. Stresses at conditional yield strength of 0.1% is calculated for all diameters as 88% of the breaking strength. Relaxation after 1000 hours is not more than 2.5% Special properties in accordance with the additional requirements of GOST Р 53772-2010. | ||||||||
The strands are delivered in coils: - inner diameter: 750 mm, 800 mm, 900 mm; - outer diameter: max. 1600 mm; - width: 750 mm, 630 mm; The maximum weight of the coils is 4 tons. 7-wire strands are delivered with in-line styling.
- Type of winding:Strands
- Dimensions, mm, d*D*h:750 mm, 630 mm;
- Weight kg:4 t
- Diameter range, mm:750 mm - 1600 mm