
En 12256 Plastics Piping Systems - Thermoplastics Fittings - Test Method For Mechanical Strength Or Flexibility Of Fabricated Fittings
出版:British Standards Institution

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En 12256 Plastics Piping Systems - Thermoplastics Fittings - Test Method For Mechanical Strength Or Flexibility Of Fabricated Fittings
出版:British Standards Institution
专家解读视频