Min. Order Reference FOB Price
1 Piece US$50.00-1,000.00 / Piece
Product Description
5.5" R.C. DTH Hammers PR52 Advantages: R.C.Drilling, referred to as " Centre Sample Recovery" or " Dual Wall Drilling",employs a Dual Wall Pipe where the drilling medium, normally high pressure air,is passed between the outer and inner tubes down to the face of drilling bit where it is ...