widely used in High intensity centrifugal pipes for prestressed concrete,Wire pole,Viaduct piers and Railway sleeper,etc Type of surface shape Nominal diameterDn/mmNominal cross- sectional areaSn/mm2Cross- sectional areaS/mm2Weight for reference per meter/(g/m)Tensile strengthRm≥MPaProof strength non-proportional extension Rp0.2≥MPaBending propertyMinMaxPerformance requirementBending radius/ ...