
Gas Cylinders - Requirements For Gauge Inspection Of Tapered Threads For Connection Of Valves To Gas Cylinders Of 25.8 Mm Nominal Diameter (pren 628)
出版:British Standards Institution

专家解读视频
Gas Cylinders - Requirements For Gauge Inspection Of Tapered Threads For Connection Of Valves To Gas Cylinders Of 25.8 Mm Nominal Diameter (pren 628)
出版:British Standards Institution
专家解读视频