
BS EN 1515-4. Flanges and their joints. Bolting. Part 4. Selection of bolting for equipment subject to the Pressure Equipment Directive 97/23/EC
出版:British Standards Institution

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BS EN 1515-4. Flanges and their joints. Bolting. Part 4. Selection of bolting for equipment subject to the Pressure Equipment Directive 97/23/EC
出版:British Standards Institution
专家解读视频