Tricone drill bit 8 1/2 inch IADC code 437 for Very Hard Rock
Formation Drilling
THREE CONE ROCK BIT 4-1/2" IADC Code 647
THREE CONE ROCK BIT 4-1/2" IADC Code 647 for Granite Basement Gauge
Diamond Protection, Shirttail & Leg
Protection
PLASTIC THREAD PROTECTOR FOR EACH.
Tricone bit, insert design, design of the bearing friction sealing
protected OD, diameter 8 - 1/2 in, number of cones 3, type of
connection API REG SHANK, size of the connection 4-1/2 IN,
additional protection leg and cone, type of protection additional
insert of CARBIDE tungsten, IADC code 437, nozzle does not include
tip CENTRAL, standard of manufacture API 7-1 last edition.
| TRICONE DRILL BITS - STANDARD CONNECTION SIZES * |
| SIZE | STANDARD PIN CONNECTION |
| 2 1/2" to 2 3/4" inclusive | A - AW Rod |
| 2 7/8" to 3 3/8" inclusive | N4 Rod |
| 3 1/2" to 4 1/2" inclusive | 2 3/8" API |
| 4 5/8" to 5" inclusive | 2 7/8" API |
| 5 1/8" to 7 3/8" inclusive | 3 1/2" API |
| 7 1/2" to 9 3/8" inclusive | 4 1/2" API |
| 9 1/2" to 14 3/8" inclusive | 6 5/8" API |
| 14 1/2" to 18 1/2" inclusive | 6 5/8" API or 7 5/8" API |
| 18 5/8" to 26" inclusive | 7 5/8" API or 8 5/8" API |
| 27" and larger | 8 5/8" API |
| *Tricone bits are available with alternative connection sizes on
request. |
| First Digit | Description |
| 1 | STEEL TOOTH BITS for Soft Formation |
| Bits that feature long, widely spaced teeth, to drill soft
formation such as shales, soft sandstone, clay and all
unconsolidated formations. |
| IADC CODES 111 - 126 - 134 |
| 2 | STEEL TOOTH BITS for Medium Formation |
| With medium length teeth, closer spaces, to drill unconsolidated
limestones, medium sandstones, clay, marls. |
| IADC CODES 211 - 224 - 234 |
| 3 | STEEL TOOTH BITS for Hard Formation |
| With short, closely spaced teeth with tungsten carbide hardfacing,
for hard and abrasive formations such as sandstones, dolomite, hard
limestone and granite. |
| IADC CODES 311 - 314 - 321 |
| |
| 4 | TCI BITS for Soft - Medium Soft formations |
| 5 | Features large chisel-shaped tungsten carbide inserts to provide
the highest penetration rates in the softest formations such as
shales, clays, limestone and sands. |
| IADC CODES 437 - 517 - 527 |
| 6 | TCI BITS for Medium Hard - Hard formations |
| Effective in a variety of formations with higher compressive
strength such as hard limestone, sandstone, dolomite and other
formations with high abrasive quality, hard streaks and broken
formations. |
| IADC CODES 617 - 627 - 637 |
| 7 | TCI BITS for Hard and abrasive formations |
| 8 | With hemispherical tungsten carbide inserts. To optimize
penetration rate in hard and abrasive formations such as granites,
basalts, quartzite and chert. Drilling weight of 3 ± 4 tons per
inch of diameter should be applied. |
| IADC CODES 732 - 737 - 837 |
| Second Digit | FORMATION |
| 1 | 1, 2, 3 and 4 are further breakdown of formation with 1 being the
softest and 4 the hardest. |
| 2 |
| 3 |
| 4 |
| Third Digit | BEARING / SEAL TYPE |
| 1 | Standard open bearing roller bit |
| 2 | Standard open bearing roller bit, air-cooled |
| 3 | Standard open bearing roller bit with gauge protection which is
defined as carbide inserts in the heel of the cone |
| 4 | Sealed roller bearing bit |
| 5 | Sealed roller bearing bit with gauge protection |
| 6 | Journal sealed bearing bit |
| 7 | Journal sealed bearing bit with gauge protection |
| Fourth Digit | ADDITIONAL FEATURES |
| A | Air Application |
| R | Reinforced Welds |
| C | Center Jet |
| S | Standard Steel Tooth |
| D | Deviation Control |
| X | Chisel Insert |
| E | Extended Jet |
| Y | Conical Insert |
| G | Extra Gage Protection |
| Z | Other Insert Shape |
| J | Jet Deflection |
FAQ
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
Based on order quantity, normally it takes 20 days for production.
in 3 working days after receiving the advance payment
3. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or
by air
Bulk order: we suggest by air or by sea.
4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before
shipping out.
5. After Services:
a. Our sales team will response for your question within 24 hours
(Holidays Excluded)
b. Technical Support will be available in any time
6. Quality & Service:
A. There will be strict inspection and testing for every order
before shipping out.
B. Our sales team and Technical Support will response for your
question within 24 hours .
C. Free replacement will provide once the failure confirmed caused
or our product quality.
Terms & Conditions of Ordering:
Quality warranty:
Our products are made of high quality steel and all spares parts
are inspected strictly before shipping. We have quickly responses
for your complaint and suggestion.
Package:
Using ply-wooden cases and pallet for package to protect the
products and avoid the damage during transportation. Also we can
customize package according to your special requests.
Production time:
Generally need 15-25 days
Transportation:
By air, By Express or By sea according to your requests.
For more information, please contact:
ROSCHEN GROUP LIMITED
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
WeChat: +86-137 6419 5009 ; +86-135 8585 5390
WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.com ; http://www.roschen.net
http://www.roschen.cn ; http://www.roschendrill.com
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