7 1/2" Carbide Journal Bearing Rotary Drill Bits Water Well Drill Bits
Product Specifications | |
Diameter | 7 1/2" 190mm |
Bearing Type | Journal bearing/flat rubber seal ring |
Drilling cycle type | Mud circulation |
Connection thread ty | 4 1/2'' REG |
Operation Parameters | |
Rotary speed (r/min) | 40-110 r/min |
Weight on Bit (KN) | 0.5~1.05 kN/mm |
Formation |
low compressive strength, medium soft, hard abrasive interbedded formation, such as hard shale, anhydrite, soft limestone, sandstone, interbedded dolomite, etc. |
About Us
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Package&Shipping
FAQ
Q: You are a trading company or manufacturer ? |
A: Manufacturer, We are a 100% real factory with over 20 years' experience in water/oil/gas wells Drill Bits. |
Q: How about your products ? |
A : Both of tricone bits and PDC bits strictly conform to API 7 requirements and ISO9001. we will do kinds inspections before delivery, also cover for after-sales service. |
Q: Package Methods ? |
A: Normally wooden case, also can be steel box; can be customized if need. |
Q: Payment Terms ? |
A: we accept T/T, L/C, Paypal, Western Union, etc. |
Q: Can I visit your factory ? |
A: Yes, we welcome you to our factory all the time, will send invitation letters if need; also can show our workshop and warehouse online. |