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Good Wholesale Vendors 91mm Core Drill Bit - Core drilling rig accessories – Sinovo

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We've got a really efficient group to deal with inquiries from prospects. Our purpose is "100% customer fulfillment by our product excellent, price & our group service" and enjoy a superb track record amid clientele. With many factories, we can easily deliver a wide selection of Small Horizontal Drilling Machine, In Horizontal Boring Machine, Ground Boring Tool, Now we have established steady and long business relationships with customers from North America, Western Europe, Africa, South America, more than 60 countries and regions.
Good Wholesale Vendors 91mm Core Drill Bit - Core drilling rig accessories – Sinovo Detail:

Sinovogroup produces and sells various types of drilling rig matching accessories, which can also be customized according to your needs.

The Selection of the Drilling Parameters

Influence Factors of Rotary Speed

When deciding the specific peripheral velocity of bits, in addition to bit type and bit diameter, other factors such as rock properties, diamond sizes, drilling equipment and core barrels, drilling depth and the structure of drilling holes, should be considered also.

a. Bits Type: The natural diamond grains on surface set core bit are large and self-sharpening easily, in order to protect the exposed diamond grains, the rotary speed of surface set core bit should be lower than the impregnated core bit.

b. Bit Diameter: In order to reach a proper linear velocity, the rotary speed of the small diameter bit should be higher than the big diameter bit.

c. Peripheral Velocity: From the formula of rotating speed, we can find the liner velocity is proportionate to the rotating speed. it means the higher speed of the liner velocity, rotating speed is accordingly higher.

d. Rock Properties: High rotary speed is suitable for medium hard, complete rock formations; In broken, fractured, mixed formations, with high vibration when drilling, drillers should slow down the rotary speed according to the broken level of the rock; in the soft formations with high drilling efficiency, in order to keep cooling and carry out the cuttings, the penetration speed needs to be limited, as well as the rotary speed.

e. Diamond Sizes: The larger the diamond size, the quicker the self-sharpening. To avoid the bit face chipped or cracked, the rotary speed of the bits with big diamonds should lower than the bits with small diamonds.

f. Drilling Equipments and Core Barrels: When the drilling machine is with poor stability and the drill rods have a low intensity, correspondingly, the rotary speed should be slowed down. If the lubricants or other similarities for decreasing the vibration are adopted, the rotary speed could be raised.

g. Drilling Depth: when the depth of the drilling hole becomes deep, the weight of the core barrels will be larger, the pressure situation is more complex it takes larger power while rotating the core barrels. Hence, in the deep hole, because of the limit of the power and intensity of the core barrels, the rotary speed should be decreased; in shallow hole, conversely.

h. Structure of Drilling Holes: High rotary speed can be used in the condition that the borehole structure is simple and the clearance between the drill rods and borehole wall is small. On the contrary, the drilling hole with a complex situation, lots of changeable diameters, big space between the drill rods and borehole wall, it causes poor stability and can’t use the high rotary speed.

The following are some pictures of core drilling rig accessories:

Product Pictures

adapter

Adapter

Impregnated diamond core bit

Impregnated diamond core bit

Impregnated Core Bit

Impregnated Core Bit

Core barrel

Core barrel

core bit

Core bit

casing clamp

Casing clamp

2.绳索取芯钻具 wire-line tools

Wire-line tools

5.扩孔器reamer1

Reamer

6..锁接头lock adapter

Lock adapter

7.提引器hositing

Hositing

8.钻杆drill rod

Drill rod

bottom jetting bit

Bottom jetting bit

core barrel2

Core barrel

core lifer for coalfiled

Core lifer for coalfiled

core lifer, case

Core lifer

drilling bits and reamer

Drilling bits and reamer

drilling rod

Drilling rod

fork

Fork

free clamp

Free clamp

head for casing

Head for casing

impregnated non-coring bit

Impregnated non-coring bit

joint of core barrel

Joint of core barrel

landing ring

Landing ring

mushroom

Mushroom

PDC non-coring bit
Three-wing drag bit

Three-wing drag bit

Q serier wire line core drilling tools
wearing spare parts

Wearing spare parts

salvage tools
打捞器 Overshots

Overshots

screw tap
Surface set diamond non-coring bit

Surface set diamond non-coring bit

1.Packaging & Shipping 2.Successful Overseas Projects 3.About Sinovogroup 4.Factory Tour 5.SINOVO on Exihibition and our team 6.Certificats 7.FAQ


Product detail pictures:

Good Wholesale Vendors 91mm Core Drill Bit - Core drilling rig accessories – Sinovo detail pictures

Good Wholesale Vendors 91mm Core Drill Bit - Core drilling rig accessories – Sinovo detail pictures

Good Wholesale Vendors 91mm Core Drill Bit - Core drilling rig accessories – Sinovo detail pictures

Good Wholesale Vendors 91mm Core Drill Bit - Core drilling rig accessories – Sinovo detail pictures

Good Wholesale Vendors 91mm Core Drill Bit - Core drilling rig accessories – Sinovo detail pictures

Good Wholesale Vendors 91mm Core Drill Bit - Core drilling rig accessories – Sinovo detail pictures


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Assume full accountability to fulfill all demands of our purchasers; attain continual advancements by marketing the advancement of our clientele; grow to be the final permanent cooperative partner of purchasers and maximize the interests of purchasers for Good Wholesale Vendors 91mm Core Drill Bit - Core drilling rig accessories – Sinovo, The product will supply to all over the world, such as: Slovak Republic, Bangladesh, Angola, Till now, the items list has been updated regularly and attracted clients from around the globe. Comprehensive facts is often obtained in our web-site and you'll be served with premium quality consultant service by our after-sale group. They are likely to help you get thorough acknowledge about our goods and make a satisfied negotiation. Company go to to our factory in Brazil is also welcome at any time. Hope to obtain your inquiries for any pleased co-operation.
  • The goods are very perfect and the company sales manager is warmful, we will come to this company to purchase next time.
    5 Stars By Sabina from Manila - 2018.02.08 16:45
    Adhering to the business principle of mutual benefits, we have a happy and successful transaction, we think we will be the best business partner.
    5 Stars By Maggie from France - 2017.09.26 12:12