Steels for fired and unfired pressure vessels: plates.-Alloy steels: Imperial units
standard by BSI Group, 08/10/1972
Machine tapers.cotter slots and gauges for cotter slots
standard by BSI Group, 08/12/1953
Specification for pipe fittings iron and steel (screwed BSP thread).
standard by BSI Group, 06/06/1951
Overhead line-wire material (non ferrous) for telegraph and telephone purposes
standard by BSI Group, 03/03/1927