"Numa has a long history of serving the HDD market and with our range of HDD Drilling Systems we enhance our ability to serve our customers with the right products for the job," said Numa president, Ralph Leonard. "Our high-quality, made in the USA HDD products provide the right balance of performance and dependability without sacrificing tool life."
Numa's HDD Drilling Systems consist of a variety of HDD components including hammers, bits, side load sonde housings, bent subs, and adaptors which are capable of drilling holes 4in to 7-1/2in (102mm to 191mm) in diameter.
Benefits offered by the Numa Systems include improved steerability, fast penetration rate, simplified field maintenance, reduced air requirements, and lower overall cost per foot.
With deep experience in rock drilling, Numa purposely designed its US-made HDD hammers to drill longer in difficult rock conditions. Furthermore, a single bore design allows for a maximum bore diameter in conjunction with providing optimum life against abrasion. The full line of Numa's HDD Drilling Systems is made up of the following options.
HDD 35 for drilling holes 3-7/8in to 4in (98mm - 102mm) in diameter, HDD 40 for holes 4-3/4in to 5in (121mm - 127mm), HDD 50 for holes 5-3/4in to 6-1/8in (146mm - 156mm) and HDD 60 for 7in to 7-1/2in (178mm - 191mm) holes.