DIN EN ISO 9012:2023-02
气焊设备 吸气式手动吹管 规格和测试
Gas welding equipment - Air-aspirated hand blowpipes - Specifications and tests (ISO/DIS 9012:2023); German and English version prEN ISO 9012:2023 / Note: Date of issue 2023-01-06*Intended as replacement for DIN EN ISO 9012 (2011-12).