Cold formed welded structural hollow sections of non-alloy and fine grain steels - Part 2: Tolerances, dimensions and sectional properties; German version EN 10219-2:2006, Corrigenda to DIN EN 10219-2:2006-07— 2 стр.
Cold formed welded structural hollow sections of non-alloy and fine grain steels - Part 2: Tolerances, dimensions and sectional properties; German version EN 10219-2:2006, Corrigenda to DIN EN 10219-2:2006-07— 2 стр.
German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Borehole sinking operations— 16 стр.