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73mm DZ240 45 Meters Core Barrel Drill Extension Rod

Jinzhou City Shitan Machinery Equipment CO. LTD.
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73mm DZ240 45 Meters Core Barrel Drill Extension Rod

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Brand Name : SHITAN

Model Number : 73MM

Certification : API ISO9001

Place of Origin : HEBEI CHINA

MOQ : 200pcs

Payment Terms : L/C, T/T, Western Union, MoneyGram

Delivery Time : 7-12 working days

Packaging Details : Standarded exported package

Type : Drill Pipe,drill rod

Material : Stainless steel

Processing type : Forging

Application : Quarry,rock drilling,Mining

Use : Ore Mining,Coal Mining,Well Drilling,rock drilling,Quarry

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73mm DZ240 Core Barrel Core Tube Water Well Drill Pipe

1. Description of Products

Core barrel or core tube -In core drilling, a section of pipe attached to the top of the bit to hold and protect the core.When drilling, it also ACTS as a guide drill tool.

An ordinary core tube is just a seamless steel tube with a wire at both ends, with a diameter slightly smaller than that of the drill bit (2~4 mm).The length of a single core pipe is 3~ 45 meters.

In order to prevent the bending of drilling hole, several core pipes can be connected to form a long and thick diameter drilling tool.Special core pipes, such as double core pipes, are often used for drilling in special formations (such as loose and broken formations).

2. Specifications of Core Barrel

Standard

Size

O.D×W

ID

Material

Remark

GB/T16950-1997 73 Φ73x4.5 Φ64 DZ40

Length and thread depends on customers demands.

89 Φ89x4.5 Φ80 DZ40
108 Φ108x4.5 Φ99 DZ40
127 Φ127x4.5 Φ116 DZ40
146 Φ146x5 Φ136 DZ40
168 Φ168x6.5 Φ155 DZ40
DCDMA AW Φ57.4x4.40 Φ48.6 R780
BW Φ73.2x6.35 Φ60.5 R780
NW Φ89.1x6.35 Φ76.4 R780
HW Φ114.3x6.35 Φ101.6 R780
PW Φ139.7x7.10 Φ125.5 R780
SW Φ168.3x6.15 Φ155.7 R780

3. Features of Core Barrel

The single-acting double-layer core barrel drilling tool has simple structure, easy operation, good coaxiality and long service life, which can effectively improve the adoption rate of rock and ore core and ensure the integrity of rock and ore core.

4. Drill Tube Using Notes

a. New drill tube should be pasted thread oil before connection

b. Make up and break at least 3 times before drilling

c. Hard bending and plastic coating can be processed according to costumer special requirement.

73mm DZ240 45 Meters Core Barrel Drill Extension Rod


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