Couplers, spigot pins and baseplates for use in falsework and scaffolds. Couplers for tubes. Requirements and test procedures|Designations, Steels, Couplers (scaffolding), Mechanical testing, Bend testing, Force measurement, Temporary structures, Construction equipment, Slip, Scaffolds, Scaffolding fixing components, Design, Load capacity, Classification systems, Strength of materials, Inspection, Quality control, Scaffolding components, Failure (mechanical), Tensile testing, Falsework, Aluminium