| Customization: | Available |
|---|---|
| After-sales Service: | 24/7 |
| Warranty: | 12 Months |
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Audited Supplier Audited by an independent third-party inspection agency
|
ADC
|
Normal WOB
kn/mm(bit dia.)
|
Rotary Speed (rpm)
|
Application formation
|
|
116
|
0.35~0.90
|
150~80
|
Very soft with low compressive strength and high drillability,such as shale,clay,and salt bed,etc
|
|
117
|
0.35~0.90
|
150~80
|
Very soft with low compressive strength and high drillability,such as shale,clay,and salt bed,etc
|
|
126
|
0.35~1.00
|
150~70
|
Soft with low compressive strength and high drillability,such as shale,clay,salt bed and soft limestone,etc.
|
|
127
|
0.35~1.00
|
150~70
|
Soft with low compressive strength and high drillability,such as shale,clay,salt bed and soft limestone,etc.
|
|
136
|
0.35~1.05
|
120~60
|
Soft to medium soft with low compressive strength or soft with harder stringers,such as hard gypsolyte,soft limestone and
sandstone,etc.
|
|
137
|
0.35~1.05
|
120~60
|
Soft to medium soft with low compressive strength or soft with harder stringers,such as hard gypsolyte,soft limestone and
sandstone,etc.
|
|
216
|
0.50~1.20
|
90~50
|
Medium hard with relatively higher compressive strength and hard stringers,such as hard shale,sandstone and limestone,etc.
|
|
217
|
0.50~1.20
|
100~50
|
Medium hard with relatively higher compressive strength and hard stringers,such as hard shale,sandstone and limestone,etc.
|
|
317
|
0.70~1.30
|
80~45
|
Medium hard with high compressive strength and abrasiveness,such as limestone,dolomite,sandstone and chert,etc.
|
|
337
|
0.80~1.40
|
75~45
|
Hard formation with high abrasiveness,such as hard limestone,dolomite,hard sandstone and chert,etc.
|
|
Note:The upper limits of WOB and RPM recommended in above table should not be used simultaneously.
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1. Sizes: 3 7/8''~36''.
2. Brand: BOBAN
3. Application: Suitable for oil, natural gas, geothermal industrial and water well drilling, HDD projects, etc.
4. Unique steel tooth structure effectively improving the wearing resistance of the teeth and greatly increasing the rate of
penetration.
5. Gauge protection structure:Enhanced gauge protection with hardfacing on the shirttail, strengthened leg with special insert tungsten carbide.
6. Bearing structure: High precision journal bearing,hardfaced bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated,made the rotating more stability, safety and durability.
Q1. How to get an accurate quotation?
A1: Please provide related technical requirements, drawings, pictures, industrial voltage(solid control equipments) and quantity, our team will provide solutions and quotations in time.
Q2. How about your delivery time?
A2: Generally, for spare parts we have regularly stock; for equipments or drilling tools it will takes 20~30 working days after receiving your deposit payment. Accurate delivery time depends on the items and the quantity of your order.
Q3. What is the warrantee period of the machine?
A3: We can supply 12 Months warranty for our equipments. We provide 7/24 internet or calling service at your convenience, and also our engineers can provide filed installation or services to your place if needed.
Q4. What's your trade terms and payments terms?
A4: We accepted trade Terms: FOB, CFR, CIF, EXW, CIP, FCA, CPT, Express/Air/Sea Delivery; Usually our payment terms are % advance payment, balance before shipping, L/C should be discussed according to actual order.
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