Audited Supplier
| HENGJI BIT SPECIFICATION | |
| Bit Size | 8 1/2'', 215.9mm |
| IADC Code | 417 |
| Series | HR |
| Tooth type | TCI/tungsten carbide insert |
| Connection | 4 1/2 API REG PIN |
| Bearing | rubber sealed bearing |
| Nozzle | three jet nozzles |
| Rotary Speed(rpm) | 150~70 |
| Weight on Bit(KN/MM) | 0.35~0.9 |
| Application | water well,oil well,HDD,exploration,etc |
| Formation | Very soft formations with low compressive strength and high drillability,such as clay,mudstone,chalk,etc. |
- Journal bearing. Hardfaced head bearing surface.Inne hole of ocne is silve-plated.The load capacity and seizure resistance of the bearing is greatly improved.
- O ring seal is mode of more wear resistant and high saturated buna-N with the increased seal section and precisely designed scaling flange in the cone sealing ares has increased the reliability of the seal.
- All rubber compensator is used which can limit pressure differential and prevent drilling fluid from entering the lubrication system and thi provides the bearing system with good assurance of lubrication.
- High weat resistance and excellent cutting ability pf the insert bit are given full play bu using carbide compacts of high strength and high toughness in comnination with optimized compact numbers and rows, the exposure height and special shaped compacts. For steel tooth tricone, the tooth surface is hard taced with new type of wear resistant material and thus has extended working life of the cutting structure while still maintaining high ROP.
| IADC | WOB (KN/mm) | RPM (r/min) | Applicable Formations |
| 417/437/ 447/415/435 | 0.35~0.9 | 150~70 | Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, gypsum, salt, soft limestone, etc. |
| 517/527/515 | 0.35~1.0 | 140~60 | Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc. |
| 537/547/535 | 0.45~1.0 | 120~50 | Soft to medium formations with low compressive strength, such as medium, soft shale, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds, etc. |
| 617/615 | 0.45~1.1 | 90~50 | Medium hard formation with high compress strength, such as hard shale, limestone, sandstone, dolomite. etc |
| 637/635 | 0.5~1.2 | 80~40 | Hard formations with high compressive strength, such as sandstone, limestone, dolomite ,hard gypsum, marble, etc. |
| Note: The upper limits of WOB and RPM in above table should not be used simultaneously. | |||
We ship to more than 40 different countries and serve industries such as Oil & Gas, water well , Construction,Mining, Horizontal Directional Drilling (HDD), Geothermal and Environmental. Our experienced staff is here to assist you with everything from choosing the right bit to shipping around the globe.
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. Reduce the cost ,Speed the drilling ,Guarantee the safety is always our aim. We have been always insist on"Hengji bit,focusing on quality".
--Advanced technology and Equipment, International standard.
--R&D center for rock drilling tools, high precision CNC machines, SGS&ISO Certified.
--10+ Years & 40+ Countries service experience.
--Optimized solutions for various of requirement.
FAQ
1. Is your company a distributor or a manufacturer?
A: Yes,We are a a professional factory of rock drilling bits in China.
2. How about your products?
A : All our activities are accredited to ISO 9001:2008, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.We have many high quality prducts (https://hb-bits.en.made-in-china.com/) .
3.what is the Packaging & Delivery?
A:We used high quality export carton or standard export woodern case
4.what is the time about the delivery?
A: repared to deliver within 1 week, if in stock.
Depends on order quantity, when out of stock,7-30days
Transportation:By sea or air
5. How to order the products?
A: Send the inquiry with detail item description or with Model number. If there is no packing demand we take it as sea-way packing. If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.
6.What is the website about your factory?
A:Our website is: https://hb-bits.en.made-in-china.com/
