DIN 50163-2:1991-09

Отменен

Testing of metallic materials; hardness test of welds; resistance spot welds, projection welds and seam welds

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DIN EN ISO 14271:2002-04

Отменен

Vickers hardness testing of resistance spot, projection and seam welds (low load and microhardness) (ISO 14271:2000); German version EN ISO 14271:2001 — 9 стр.