Diamond Drilling & Core Sampling Services Call Now Write to Us Expert Core Cutting & Diamond Drilling We assist a wide of clients with our diamond drilling/ core cutting capabilities. We can wet core from 25mm to 450mm diameter cores.Some of our key services: Concrete core sampling to BS EN 12504-1Core strength testingStitch drilling for accessLarge diameter cores through ground slabs for sampling and geotechnical surveysCore cutting for new service ducts and utilitiesAsphalt pavement core sampling