Complex sentence: Pipe ramming is a trenchless method for installation of steel pipes and casings over distances usually up to 30m (150 ft) up long and up to 1,500mm (60-inches) in diameter, although the method can be used for much longer and larger installations.
Split into simpler sentences: Pipe ramming is a trenchless method for installation of steel pipes and casings. Distances up to 30m (150 ft) up long and up to 1,500mm (60-inches) in diameter are feasable, although the method can be used for much longer and larger installations.