YINHAI -Series type of cone bits are assembly parts of Tricone bit and hole opener,its the main cutting structure of a bit. FAQ: 1.Q:What types of packing models do you have? A: Wooden case box free of fumigation;carton box, steel box;packing can be customized depend on demands. 2.Q:What are your advantages (services, price ,quality)? A:We are 100% factory directly sales,API production process guarantee,Provide customized services for OEM brand processing. Reduce  much drilling cost for you and give enough margin room for trading companies, we have already build an outstanding technological innovative R&D department for guiding and technical support for after sales, also could offer the drilling feedbacks for your reference.worry free after-sales services. Welcome to make a video-call to inspect our factory. 3.Q: How about the payments and delivery terms? Payment: T/T, L/C, Western Union, Paypal, 30% deposit in advance and rest before delivery. Min. order quantity: 1 piece. Transportation: By DHL/TNT/Fedex express, air, sea, train. YINHAI BUSINESS SCOPE: We are manufacturer of tricone bits, PDC bits, Piling foundation single cone, rock reamers. Our bits based on high-tech skill and design are used in explitation of natural gas, crude oil, water well, geological exploration, HDD drilling and piling foundation. We have special technical research team, production management team and professional sales team in our company to serve our clients . Such as Tricone bit, PDC bit, cones, single roller cone,Roller bit, Diamond Core bit, Bi-center bit, hammer bits, drag bits, Hole opener,PDC reamer,  HDD vertical reamer, rock reamer and other accessories such as subs, nozzles,adapters, bit breakers, and design according to your requiments .etc.   We provide tricone bits from 3 1/2" to 34",PDC bits from 2 7/8” to 26”,piling from 60cm to 200cm,HDD vertical reamer and rock reamer from 8” to 55 inch。