TERRA’s pipe renewal range is designed to replace ageing gas, water and sewer lines without open-cut trenching, using powerful bursting systems that crack/cut the existing pipe and pull a new product pipe back through the same route—ideal for busy streets and tight access. Their TERRA-HYDROCRACK rod-bursting units are built for renewing mains (roughly OD 50–350 mm) across tough host materials (including cast iron, steel and ductile iron), with high pull forces around 600 kN / 60 tonnes to drive efficient replacements over typical runs up to about 150 m. For service lines and smaller diameter work, the TERRA-EXTRACTOR cable bursters offer a compact, fast alternative—models like the X 400 are rated for substantial pull forces (around 40 tonnes) and are intended for replacing mains in the ~40–300 mm range, again with runs up to around 150 m, often with remote operation to keep crews out of the excavation during pullback.