BS 3HR 503. Specification for nickel-chromium-cobalt-titanium-aluminium heat-resisting alloy wire for thread inserts (Nickel base, Cr 19.5, Co 18.0, Ti 2.5, Al 1.5) (0.45 mm to 2 mm diameter)
Plastics rainwater piping systems for above ground external use - Unplasticized poly(vinyl chloride) (PVC-U) - Part 2: Guidance for the assessment of conformity