Various types of hard-facing are availabledepending on the drilling parameters and formation properties. Cylindersazioffers a complete range to suit all drilling conditions., hard-facingtypes, , , hf 1000 (crushed carbide), , hf 2000 (crushed carbide and tungstentraps), , hf 3000 (t.C.I. Spray matrix spray powderand tungsten insert), , hf 4000 (buttons), , hf 5000 (technodur), , ,
