
Bs En 712 Plastics Piping Systems - Mechanical Joints Between Pressure Pipes And Fittings - Test Method For Resistance To Pull-out Under Constant Stress
出版:British Standards Institution

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Bs En 712 Plastics Piping Systems - Mechanical Joints Between Pressure Pipes And Fittings - Test Method For Resistance To Pull-out Under Constant Stress
出版:British Standards Institution
专家解读视频