widely used in High intensity centrifugal pipes for prestressed concrete,Wire pole,Viaduct piers and Railway sleeper,etc
Type of surface shape
| Nominal diameter Dn/ mm | Nominal cross- sectional area Sn/ mm2 | Cross- sectional area S/ mm2 | Weight for reference per meter/ (g/m) | Tensile strength Rm≥MPa | Proof strength non- proportional extension Rp0.2≥MPa | Bending property | ||
Min | Max | Performance requirement | Bending radius/ mm | ||||||
Round | 6 | 28.3 | 26.8 | 29.0 | 222 | To all sizes bars 1080 1230 1420 1570 | To all sizes bars 930 1080 1280 1420 | Time of repeated bending ≥4 /180° | 15 |
7 | 38.5 | 36.3 | 39.5 | 302 | 20 | ||||
8 | 50.3 | 47.5 | 51.5 | 394 | 20 | ||||
10 | 78.5 | 74.1 | 80.4 | 616 | 25 | ||||
11 | 95.0 | 93.1 | 97.4 | 746 | No crack in the sinuosity after 160°~180°bending | Bend diameter =10 X Nominal diameter | |||
12 | 113.0 | 106.8 | 115.8 | 887 | |||||
13 | 133.0 | 130.3 | 136.3 | 1044 | |||||
14 | 154.0 | 145.6 | 157.8 | 1209 | |||||
16 | 201.0 | 190.2 | 206.0 | 1578 | |||||
Spiral flute | 7.1 | 40.0 | 39.0 | 41.7 | 314 | — | |||
9 | 64.0 | 62.4 | 66.5 | 502 | |||||
10.7 | 90.0 | 87.5 | 93.6 | 707 | |||||
12.6 | 125.0 | 121.5 | 129.9 | 981 | |||||
Ribbed | 6 | 28.3 | 26.8 | 29.0 | 222 | — | |||
8 | 50.3 | 47.5 | 51.5 | 394 | |||||
10 | 78.5 | 74.1 | 80.4 | 616 | |||||
12 | 113.0 | 106.8 | 115.8 | 887 | |||||
14 | 154.0 | 145.6 | 157.8 | 1209 | |||||
16 | 201.0 | 190.2 | 206.0 | 1578 | |||||
