BS 4515-2:1999

This British Standard specifies requirements for the welding of solution annealed duplex austeniticÐferritic stainless steel pipelines with specified minimum chromium contents in the range 21.0 % to 26.0 %, designed in accordance with BS 8010.

It is applicable to transmission pipelines for gases, liquids or slurries, both on land and offshore, of outside diameter 21.0 mm and larger, having a thickness of 3.0 mm or greater.

In addition to the definitive requirements it also requires that the items detailed in clause 4 be documented. For compliance with this standard, both the definitive requirements and the documented items have to be satisfied.