... ,uncoated seven-wire for prestressed concrete Dia:9.3mm-15.20mm JIS G 3536 low relaxation PC strand,steel strand,uncoated seven ... -wire for prestressed concreteDia:9.3mm-15.20mm 12.4MMSize:SWPR7AL ... -2003,ASTM A 416,BS 5896-1980 and JIS G 3536 JIS G 3536 low relaxation PC strand,steel strand,uncoated seven ...