This standard is included in DIN Handbook 52, 62-2 and 62 CD. Applies to bushes, flanges and seals for socket-welded flanged joints for connecting pipes for high density polyethylene (HDPE) Type 1 and Type 2 in accordance with DIN 8074 Part 1 or Part 2, and for connecting pipes and pipe elements of other material for pressure pipelines. The bushes and flanges of HDPE Types 1 and 2 must conform to the requirements of DIN 16963 Part 5 or Part 25.