Pipe joint assemblies and fittings for types 1 and 2 polypropylene (PP) pressure pipes; tees and branches produced by segment inserts and necking for butt welding; dimensions
1型和2型聚丙烯（PP）压力管的管接头组件和配件；对焊用分段插入件和颈缩产生的三通和支管；尺寸
1983-02-01
DIN 16963-2
Pipe joint assemblies and fittings for types 1 and 2 high-density polyethylene (HDPE) pressure pipes; tees and branches produced by segment inserts and necking for butt welding; dimensions
1型和2型高密度聚乙烯（HDPE）压力管道的管接头组件和配件；对焊用分段插入件和颈缩产生的三通和支管；尺寸