30 صفحه پی دی اف
BS 5896:2012-High tensile steel wire and strand for the prestressing of concrete – Specification
BS 5896:2012-High tensile steel wire and strand for the prestressing of concrete – Specification
30 صفحه پی دی اف
BS 5896:2012-High tensile steel wire and strand for the prestressing of concrete – Specification