16 Drilling Rigs For Bored Piles,Caisson,Contiguous,Secant & FCA Piles. Hole diameters range from 300mm - 3000mm to a depth in excess of 60 metres. Service: Design, Drilling, Engineering, Installation, Pile Driving, Sheet Piling, Timber Piling, Underpinning. Item: Concrete Piers, Drilled Piers, Rails, Screwpiles. Service Option: Quotes. Equipment: Augers, Excavators, Extractors, Hammers, Vibrating Hammers. Structure: Jetties, Wharfs