| 出生地 |
China (Mainland) |
| 材料 |
钢铁 |
We supply the prestressed concrete steel bar under the following items.Standard: JIS G 3137 & GB/T 5223.3-2005 Diameter: 7.1mm 9.0mm 10.7mm 12.6mm Tensile strength: ≥1420Mpa Elongation: ≥7% Relaxation rate: ≤2% Elongation ratio of non-stress:≥1275Mpa Straightness: To one meter steel bar, the max distance of the spring to the arc is no longer than 5mm in natural state.