Convex Face DHD Shank DTH Mdhd275-356 Drill Bit for Mining

• Certification：ISO 9001:2000, SGS
• Standard：GB
• Surface Treatment：Spray-Paint
• Manufacturing Process：Forging
• Material：Carbon Steel
• Transport Package：Wooden Case

=== Base Info ===

• Model NO.：MDHD275-356
• Trademark：MING
• Origin：China
• HS Code：8207199000
• Production Capacity：20000PCS,Year

=== Description ===
Big size bits using in Waterwells, Oil, Gas and Construction Drilling.MDHD275-31131115*Φ1836*Φ163205.0 MDHD275-33433418*Φ1944*Φ183216.0 MDHD275-35635618*Φ1948*Φ183225.0 MDHD275-36836820*Φ1950*Φ184230.0 MDHD275-38138120*Φ1954*Φ194236.0 MDHD330-38138120*Φ1954*Φ184297.0 MDHD330-40640620*Φ1958*Φ184311.0 MDHD330-43143120*Φ1964*Φ184324.0 MDHD330-44544524*Φ2072*Φ184334.0 MDHD330-47047024*Φ2080*Φ184347.0 MDHD475-49549524*Φ2088*Φ184710.0 MDHD475-52552524*Φ20100*Φ184760.0 MDHD475-58058024*Φ20116*Φ184855.0 MDHD475-66066028*Φ20140*Φ194950.0 MDHD475-68068028*Φ20144*Φ194968.0 MDHD525-71171128*Φ20154*Φ1941455.0 MDHD525-76276232*Φ20172*Φ1941539.0 MDHD525-78078032*Φ20180*Φ1941564.0 MDHD525-82582536*Φ20216*Φ1941625.0 MDHD525-99899840*Φ20348*Φ1941980.0
We can design and manufacture the different diameter,holes number,carbide button shape and face shape according to the customers' requirement.
Order Guide: Shank + Head Diameter + Face Design + Button Shape


How to choose the suitable head face of the DTH drill bit?
   1. Concave: Suitable for all kinds of formation, especially for deep well drilling, perpendicularity of the hole is wonderful.
   2. Convex:  Suitable for the formation of moderate hardness stratum, drilling efficiency is good, borehole perpendicularity is moderate.
   3.  Flat:         Suitable for special hard formation stratum, especially for fracture, crack spacing and complex formation drilling effect is very good, has the good perpendicularity of the borehole.

Our Advantages as below:

1. High quality steels materials. Steel is from TIMKEN and Tungsten carbide are YK05, or T6 from Element Six in Germany
2. Kingdrilling DTH tools are forged by advanced electron-hydraulic forging hammer.
3. Advanced heat-treatment equipment: multipurpose furnace heat treatment.
4. Completed moulding (tooling ) departments with many molds available.
5. Professional R&D team,completed quality system.
6. Strict Quality-Check Systems.

The information you may like to know before order:
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 25 days for production.
Only 3 or 5 days if we have stock on your request size.
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 each order before shipping out.
5. After Services:
1. Our sales team will response for your question within 24 hours (Holidays Excluded)
2. Technical Support will be available in any time

Product Application:

Transport:


Package and Delivery:
Packed by Carton or Wooden cases.

Delivery:

1. Goods in stock can be delivered within 5 days.
2. DTH Bits production time is about 15 days.
3. DTH Hammer product time is about 30 days.

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