Electron and laser-beam welded joints. Requirements and recommendations on quality levels for imperfections, Steel, nickel, titanium and their alloys— 24 стр.
25.160.40 Welded. Including welding position and mechanical and non-destructive testing of welded joints / Сварочные швы. Включая положение шва и механические и неразрушающие испытания сварных соединений
