geothermal wells concentric drilling system

{"cid":"91212094","title":"Overburden Casing Concentric Drilling System DHD 360 Hammer 219mm MK5E","imgUrl":"https:\/\/img.chinax.com\/nimg\/ab\/41\/d3d5c1fa95475ced69dce51fd996-200x200-1.jpg","attrs":{"Price":"999-99999USD\/PC","Brand Name":"MING","Model Number":"MK5E219-DHD360","Minimum Order Quantity":"1PC","Delivery Time":"3-5WEEKS","Certification":"ISO9001","Place of Origin":"CHINA","Payment Terms":"T\/T, D\/P, Western Union","Supply Ability":"2000PCS\/MONTH","Packaging Details":"WOODEN CASE","Machine type":"Drilling Tool","Material":"High Manganese Steel","Use":"Well Drilling,Mining & water well drilling","Type":"Concentric casing system","Model type":"DHD360","Color":"Golden,Request,Red,blue,Gold","HS":"82071990"}}

{"cid":"91096850","title":"194mm Ql60 Overburden Wing Bit For Concentric Casing System Rock Drilling Eccentric Casing System","imgUrl":"https:\/\/img.chinax.com\/nimg\/df\/b3\/f0fae14130d71ee0a19b46856c16-200x200-1.jpg","attrs":{"Price":"negotiation","Brand Name":"MIROC","Model Number":"QL60","Minimum Order Quantity":"1","Delivery Time":"15-20days","Certification":"ISO","Place of Origin":"China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"2000pcs per month","Packaging Details":"wooden box or carbon box","type":"Odex drill bit","Material":"Carbon steel","Use":"Well Drilling","Application":"Coal Mining,Quarry drilling,DTH drilling","Diameter":"194mm","Machine type":"Drilling Tool","Color":"Yellow,bule,green etc","Applications":"water well drilling, mining, etc","Bit Face Profile":"Flat\/Drop Centre","Bit Shank Type":"DHD, SD, QL, Mission, COP, BR, Mach, etc.","Face":"Flat\/Convex\/Concave","Inserts Design":"Spherical; Ballistic","Machine Type":"DTH Bit","Package":"Plywood Case","Process":"Forging","Product Nmae":"DTH Drill Bits"}}