GB/T 26024-2021空调与制冷系统阀件用铜及铜合金无缝管标准
英文:Seamless copper and copper alloys tube for valves on air-conditioning and refrigeration system GB/T 26024-2021介绍: 国家标...
英文:Seamless copper and copper alloys tube for valves on air-conditioning and refrigeration system GB/T 26024-2021介绍: 国家标...