Hebei Zhongcheng Drill Bit Manufacture Co.LTD. .(SRF) was established in 1997. It is a privately owned and proudly company. We have grown to become a leading manufacturer of tricone bit and supplier of high quality drilling tools & equipment, and we excel in designing, manufacturing, and distributing construction industry drilling tools as well as finding custom solutions to complex problems. Our goal is to provide our customers with the best quality tools, accessories and service in the industry. We are supported by many years of experience, trained professionals and a full machine shop. Hebei Zhongcheng Drill Bit Manufacture Co.LTD, our brand SRF maintains a strong reputation in the construction, exploration, water well, geothermal, mining, and oil & gas industries as a company that can provide dependability and high quality products at excellent value. Hebei Zhongcheng Drill Bit Manufacture Co.LTDwas established in 1997. It is a privately owned and proudly company. We have grown to become a leading manufacturer of tricone bit and PDC bits and supplier of high quality drilling tools & equipment, and we excel in designing, manufacturing, and distributing construction industry drilling tools as well as finding custom solutions to complex problems.SuRuiFeng a registered brand -SRFbrand bits includes:SRF Bit carries a complete line of the following:Oil Well BitsMining BitsWater Well BitsGeothermal BitsEnvironmental BitsConstruction BitsExploration BitsBlast Hole BitsŸTricone Bit( steel tooth & TCI bit)ŸPDC Drill Bit (matrix & steel body)ŸStep Drag Bit（3 wings,4 wings）ŸReamers(Hole opener):Rock reamer,ŸOpen reamer,Barrel reamer, Rock AugerŸDiamond Core Bits:PDC diamond bit with Natural diamond ,Thermal Stable Polycrystalline (TSP), combinationŸStabilier,Bit breakers,Bit subs, NozzlesŸSingle cutters/tricone cones/cutters, Drill pipe,drill rodOther related tools:Oil Vibrating Sieving Mesh, Mud Hydrometer,pin and box tap,Slips,Elevator For tricone bit,size range:3-26.For PDC drill bit,size range:5 1/2to 17 1/2 SRF Bit carries all brands of drill bits, such as, Kingdream,Lilin,CS,Hughes, Smith,. Contact us now toget a quick, competitivequote for any drill bitsyou need.Our broad spectrum of customers allows us to offer a dynamic range of products and solutions, you can trust us to meet your industrys demands. From working with drilling tool designers, custom part design, drafting, implementation to machining fabrication, assembly and distribution, we are ready to meet any of your industrys drilling challenges. At ZHONGCHENG we feel it is important to work closely with both our customers and suppliers to develop a relationship based on trust and cooperation.Our companys machine shop uses state of the art CNC’s to manufacture parts to extremely high precision and accuracy. We constantly acquire and stock quality raw materials to reduce lead times on our products, and work closely with our customers to continuously improve their products in an effort to reduce their cost per foot when drilling.Hebei Zhongcheng Drill Bit Manufacture Co.LTD(SRF) has a large machine shop with numerous high quality CNC Lathes and Mills including a 4 Axis 26Diameter Spindle Bore Lathe. We have a large welding area, and commonly preform ARC, MIG, TIG and pressure welding applications. So if you have any request for the Drill bits,drilling tools,please Call us or send inquiry to US at any time.