pc strand :
1. raw material : 82B,77B, high carbon steel wire rod ,SWRH 82B,77B
2. technology : continued drawing wite large deduction stranding the
stabilinzing treatment
3. characteristics:
high rate of yield strength and ultimate strength : low relzxation , steady
modulus of elasticity,stress relieved , high fixed with concrete.
modulus of elasticity,stress relieved , high fixed with concrete.
4. strandard : ASTM A 421-98 BS5896-1980 GB5223-2003
5. application : high ways , bridge , building,key water control project poor
plant.