
Plastics piping systems - Polyethylene (PE) pipes and fittings for water supply Part 1: General - Amendment 1: Melt mass-flow rate (MFR) for PE 80 and PE 100
出版:International Organization for Standardization

专家解读视频
Plastics piping systems - Polyethylene (PE) pipes and fittings for water supply Part 1: General - Amendment 1: Melt mass-flow rate (MFR) for PE 80 and PE 100
出版:International Organization for Standardization
专家解读视频