DIN 16962-11
Pipe Joints and Elements for Polypropylene (PP) Pressure Pipelines, Types 1 and 2; Turned and Pressed Reducing Sockets for Butt-welding, Dimensions
1型和2型聚丙烯（PP）压力管道的管接头和元件；对焊用旋压异径套筒.尺寸
1980-08-01
DIN 16963-13
Pipe Joints and Elements for High Pressure Polyethylene (HDPE) Pressure Pipelines, Types 1 and 2; Turned and Pressed Reducing Sockets for Butt-welding, Dimensions
1型和2型高压聚乙烯（HDPE）压力管道的管接头和元件；对焊用旋压异径套筒.尺寸
1980-08-01