Pipe Joints and Elements for High Pressure Polyethylene (HDPE) Pressure Pipelines, Types 1 and 2; Turned and Pressed Reducing Sockets for Butt-welding, Dimensions— 3 стр.
Pipe joints and their elements for pipes of high-density polyethylene (high-density PE) under pressure, type 1; general quality requirements and test methods— 4 стр.