Introduction
HD offers a range of DTH hammers and underreaming systems, and ring bit systems, both conventional and reverse-circulation (RC) up to 1300 mm dia.. And, for the large diameter DTH RC hammer drilling systems, with the single RC hammer drilling systems for 600 – 1000 mm dia.
HD offers a range of DTH hammers and underreaming systems, and ring bit systems, both conventional and reverse-circulation (RC) up to 1300 mm dia.. And, for the large diameter DTH RC hammer drilling systems, with the single RC hammer drilling systems for 600 – 1000 mm dia.
