DIN EN ISO 5172-2012
气体焊接设备.气焊,预热和切割用喷焊器.检验和规范(ISO 5172-2006 + Amd 1-2012).德文版本EN ISO 5172-2006 + A1-2012
Gas welding equipment - Blowpipes for gas welding, heating and cutting - Specifications and tests (ISO 5172:2006 + Amd 1:2012); German version EN ISO 5172:2006 + A1:2012