Home / Standards / GB/T 50349-2005 GB/T 50349-2005 Technical specification for polypropylene pipeline engineering for building water supply 建筑给水聚丙烯管道工程技术范围 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A