Approved to WRC, BBA, PKM, PEM. DO NOT USE FOR: Gas, fuel oil or compressed air applications. BS EN ISO 9001: BS 7291 Parts 1 & 3 Class S. Pipe inserts are recommended for installations using plastic pipe (see this section). Barrier Pipe - Speedfit. Cross-linked to polythene pipe tested to DIN 16892 Supplied in either 2 metre lengths in bundles of five or in 25 metre coils