BS 4871-3: 1985 Specification for Approval testing of welders working to approved welding procedures. Part 3: Arc welding of tube to tube-plate joints in metallic materials

British Standards Institution (BSI ). This British Standard. First edition. March 1985. ISBN: 0-580-14366-X. 16 p. This Part of BS 4871 specifies requirements for the approval testing of welders to be engaged on the manual, semi-automatic, automatic or mechanized arc welding of those tube to tube-plate joints in metallic materials for which an approved welding procedure has to be employed.