1.diameter :15.20mm , 15.70mm,17.80mm 2.tensile strength : >1860Mpa 3.low relaxation : <2.5 4.standard : ASTM, BS,JIS 1.diameter :15.20mm , 15.70mm,17.80mm2.tensile strength : >1860Mpa3.low relaxation : <2.54.standard : ASTM A416, BS 5896,JIS G35365.diameter : 15.20mm , 15.70mm, 17.80 mm6.surface :spiral ribs /plain /indented7.application : applied in common and high-speed railway projects8. ...