Mechanical vibration; balance quality requirements of rigid rotors; determination of permissible residual unbalance; identical with ISO 1940-1:1986— 15 стр.
Resistance welding - Vickers hardness testing (low-force and microhardness) of resistance spot, projection and seam welds (ISO 14271:2011); German version EN ISO 14271:2011— 14 стр.