What is the difference between cross-linked polyethylene PE-Xa and PE-Xb?
They are just two different stitching technologies. At the same time, they are SIMPLY different and this means that, subject to the technological process, all physical, mechanical and other properties of pipes meet the requirements of DIN 4726, GOST 32415-2013, DSTU B V.2.7-143: 2007, EN ISO 15875. Also none of these normative documents does not separate the requirements for pipes according to the types of cross-linking (A, B or C), regulating only the degree of cross-linking of pipes for different types. Those. When defining the area of use or class of pipe operation, ALL of the above Standards define exclusively the type of material CROSS-LINKED POLYETHYLENE (PE-X) without specifying the type of cross-linking or division into corresponding classes.