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

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