Introduction
HD offers a range of DTH hammers and underreaming systems, both conventional and reverse-circulation (RC). And, for the large diameter DTH RC hammer drilling systems, with the single RC hammer drilling systems for 300 – 1000 mm dia.
HD offers a range of DTH hammers and underreaming systems, both conventional and reverse-circulation (RC). And, for the large diameter DTH RC hammer drilling systems, with the single RC hammer drilling systems for 300 – 1000 mm dia.
