Coupling sleeves, other name is Coupling, when using rock drills with male shank adapters and a conventional drifter rod, a coupling is req...
Casing Tubes:Miracleland supplies Metric Casings, Flush-Jointed Casings and Flush-Coupled Casings.Casing thread: 4 threads per inch.Casing length: generally supplied with le...
HSS Drill Bit with Weldon Shank (DNHX)1. HSS hole cutter, Weldon shank, with more stable clamping for stable cutting and finish of holes. 2. Additio...
Casing Tubes:Coupled type casing tubes have a box thread at both ends and are connected together by a pin-to-pin coupling. This allows coupl...
Polycrystalline diamond compactCommon size: 803/908/1308/1313/1608/1613/1616/1908/1913/1916/1919Usage:1. For oil drilling2. For coal drilling3. For hard ma...