Resistance welding - Vickers hardness testing (low load and microhardness) of resistance spot, projection and seam welds (ISO/DIS 14271:2009); German version prEN ISO 14271:2009
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.