BS EN 12237 is intended to establish the mechanical strength and leakage required to verify the fitness for the intended service as installed ductwork
The methods complement those described in ISO 1927-6
for which other standard test methods are available if the full response to drycleaning of a textile is to be assessed
BS 8233:1987
A green roof is typically understood to be an intentionally vegetated roof or platform disconnected from the underlying ground
Specification for nickel-chromium-titanium heat-resisting alloy billets, bars, forgings and parts (nickel base, Cr 19.5, Ti 0.4) Ingestion-build-64721 BS EN 12237 is intended1 Scope This British Standard specifies requirements for nickel chromium titanium heat resisting alloy supplied in the following forms, and as parts. a) Bars and extruded sections for machining: annealed, designation HR 5A. b) Extruded sections for subsequent forming: softened, designation HR 5B. c) Billets and bars for forging: hot or cold worked and subsequently machined or ground, designation HR 5C. d) Forgings: annealed, designation HR 5D.