ST68 Rnd87 Carburized Drill tubes

ST68 Rnd87 Carburized Drill tubes

ST68 Rnd87 Carburized Drill tubes

King Kong Drills company produce different size and type coal cutting picks ,rock drilling tools, cutting picks, road milling teeth etc.


Customized logo(Min. Order: 1 Pieces)
Customized packaging(Min. Order: 1 Pieces)
Graphic customization(Min. Order: 1 Pieces)

if you need them.

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ST68 Rnd87 Carburized Drill tubes

Underground production and long hole drilling
ST68 Drill string

ST68 Drill string

ST68 Rnd87 Carburized Drill tubes

Drill bits

ST68 Drill bits

ST68 Rnd87 Carburized Drill tubes

Please note: that all button bits are manufactured over-sized 0,5-2,5 mm (it depends on the size of bit and buttons), meaning that for example a 45,0 mm bit is at least 45,5 mm. as new, or the size of a 140,0 mm new bit can be 141,5 mm to 142,5 mm (it depends on the model and type of bit). This is done because of the fast initial wear on button bits. It is important to consider that the drilled hole could vary in size due to drilling conditions, drilling practices and ground formation.

ST68 Rnd87 Carburized Drill tubes

ST68 Rnd87 Drill tubes fully carburized

Fully carburized

ST68 Rnd87 Drill tubes fully carburized without undercut(shoulder)

Fully carburized. Without undercut (shoulder).
Flushing hole diameter 66,0 mm.

ST68 Rnd87 Carburized Drill tubes

ST68 Rnd87 Carburized Drill tubes number

Product no. Product code Length Shank thread Carburized or surface hardened Shape Section Flushing hole Coupling D Wrench flat Strike face contact type mm foot/inch mm mm mm
90514263 252-6812,10 1 220 4′  ST68 C Rnd87 87 38 87 No Buttom-contact
90510679 252-6815-84,10 1 525 5′  ST68 C Rnd87 87 38 87 No Shoulder drive
90514054 252-6715-88-84,10 1 525 5′  ST68 C Rnd87 87 38 87 No C-Drive
94502702 252-6715-88,10 1 525 5′  ST68 C Rnd87 87 38 87 No C-Drive
94502712 252-6815,10 1 525 5′  ST68 C Rnd87 87 38 87 No Buttom-contact
94502710 252-6818-88,10 1 830 6′  ST68 C Rnd87 87 38 87 No C-Drive
94502713 252-6818,10 1 830 6′  ST68 C Rnd87 87 38 87 No Buttom-contact

ST68 Rnd87 Carburized Drill tubes number

Tungsten carbide inserts

Use large-grain coarse-grained tungsten carbide, which has high wear resistance, impact resistance and thermal stability

Shank body

High-quality alloy steel is selected, and the stable heat treatment process makes the tooth body wear-resistant and tough

Brazing process

Through special welding process, the strength of pick welding is increased, the impact resistance is improved, and the carbide tip is not easy to fall off

Shank reinforcement

Through laser cladding, powder metallurgy technology and other technologies to protect the head of the tooth body, reduce the wear rate and extend the service life


According to different applications ,King Kong Drils offers three major types round shank picks :  rotary drilling picks,road header picks,road milling picks.Mainly used for coal mining and tunnel,tunnels,ground trenching and other excavation works,   and mainly equipped with shearer,boring machine,milling machines and other equipment.  Applied to all kinds of soft and hard soil, rock and concrete layer.

Plant show

How can we keep the quality stable?

  1. Raw material selected
  2. Advanced design and production equipment
  3. Skilled technician
  4. Finished Product testing
  5. Customers’ feedback to change design and materialas.

What we do?

We specialized in six industrial fields and professional supply over 146 kind product verified in over 400 specifications.As the Superhard composite material department,our product range including Earth drilling tools,PDC cutter,PDC drill bit,Holder and blade of Chain saw and other superhard composite material tools.

Technology advantage

We were awarded 2 National Gold Prizes and 128 Scientific Promotion Prizes and we have got 76 patents in recent years.


1.what can you buy from us?
Air Compressor,Drilling Rig,Drill Bit,Spare Parts

2.How can I make payment?
A: You can pay directly online on Alibaba with credit card, or TT, Western Union, LC etc.

3.How is the shipment? How long does it take?
A: For large quantity or heavy products, we ship by sea shipping or land shipping. Shipping efficiency depends on country and city you want to ship to. For small and delicate products, we ship by DHL, UPS, Fedex or TNT.You can also appoint shipping method you like before we ship.

4.How is your quality control?
A: We have our own experienced QC.There will be strict inspection and testing for every order before shipping out.

5.Do you have any certificate of authorization?
A: Our machinery is CE certified.

KINGKONGDRILL Co., Ltd has always valued end users’ first hand feedback to helps us in delivering products that suits for their own use.

We appreciate feedback from customers and it is our mission to continually excel ourselves in manufacturing quality products with the relentless efforts we put in.

For the pursuit of long time business cooperation, we don’t make cheap quality and offer cheap prices to lure business.

To KINGKONGDRILL Co., Ltd, quality comes first. For quality guarantee, we conduct strict inspections throughout the production and after the production.

We are capable of customizing for your ground condition: we can select proper tungsten carbide tips for your different hard rock condition.

In the passion we carry, our cutting teeth will help our customers to make more money when using our teeth over bigger companies that don’t know or care about individual customer requirement.

Please contact Bruce if you need any rock drilling tools or Mining picks.





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