This standard BS 4515-2:1999 Specification for welding of steel pipelines on land and offshore is classified in these ICS categories:
23.040.10 Iron and steel pipes
25.160.01 Welding, brazing and soldering in general
This British Standard specifies requirements for the welding of solution annealed duplex austenitic—ferritic 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.