15 cm (150ร150ร150 mm) concrete test cube mould made of durable cast iron or steel, commonly used for casting concrete samples to test compressive strength.Purpose: Used in construction sites and laboratories for quality control and assuring concrete structural standards.Design: Precision-engineered with bolted, separable metal sides for easy demolding and clean-up after the concrete sample sets.Usage: Freshly mixed concrete is poured and compacted into the mould, cured for 24 hours before demolding, and later crushed in a compression testing machine