The Low Relaxation Prestressed Concrete Steel Bar
Grade: 30MnSi Size: ? 7.1, ? 9.0, ? 10.7, ? 12.6
The original material of PC BAR
Chemical composition of 30MnSi
C Si Mn P S Cu
0.27-0.34 0.60-1.10 0.90-1.30 ＜0.025 ＜0.025 ＜0.025

Grad and technological properties
Nominal diameter: ?7.1、?9.0、?10.7
Tensile strength ≥ 1420Mpa
Yield strength ≥ 1275Mpa
Elongation ≥ 5%
Low relaxation ≤ 1.5%
Straightness ≤ 2mm/m
Net weight per coil: 1000Kg±100Kg
The steel PC bar of our company accords with JISG3137-1994(Japan) and GB/T5223.3-2005(China). The amount of products arrives 30,0000 tons per year, The product sells toward hinterland, Taiwan, Korea, Japan, Vietnam and Malaysia etc. Every year export quantity arrive 50,000 tons.