Qualification testing of welders for underwater welding - Part 2: Diver-welders and welding operators for hyperbaric dry welding (ISO 15618-2:2001); English version of DIN EN ISO 15618-2
水下焊接焊工的认可试验.第2部分:高压干焊用潜水焊工和焊接操作员(ISO 15618-2-2001);德文版EN ISO 15618-2:2001