
73mm DZ240 Core Barrel Core Tube Drilling Rod For Core Drilling API ISO
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.
Jinzhou City Shitan Machinery Equipment CO. LTD.
Jinzhou City Shitan Machinery Equipment CO. LTD. is a professional production and
processing company for core drilling rigs, crawler drilling rigs, various track chassis, various
types of mud pumps, various track transport vehicles, etc. It is one of the outstanding
manufacturers of similar products in North China. Strong technical force. The modern productiona
equipment and complete testing means are specialized in the development, manufacture and
marketing of drilling rigs.
To ensure the quality and stability of the machine, we use the most advanced production and testing
equipment, Made from high quality materials, with fashion and compact design, that keeps our drilling
rigs more efficiency and with low failure rate, more economic and durable, and with a high comprehensive
cost performance. Our water drilling rigs have received the real market validation as the majority of our
customer’s positive feedback.
The company's main products are rigs: XY-1, XY-1A, XY-1B, GK-180, GK-200, DPP-100 and other series
of drilling rigs: gearbox assemblies and gyro assemblies for various rigs, Winch assembly, reducer assembly,
pump assembly. Drilling tools: sedimentary pipe joints, casing joints, casing couplings, drill pipe joints, casing
core pipes, lifters, automatic drop hammers, earth borrowers, standard penetrations, forks, lock joints, alloy drill
bits Hundreds of drilling tools, such as steel sand drill bits, core pipe joints, drill pipe pliers, and casing pliers.
Jinzhou City Shitan Mechinery Equipment CO. LTD. has a complete and scientific quality management
system. The integrity, strength and product quality of Jinzhou Stone Exploration Machinery Co., Ltd. have been
recognized by the industry. Welcome friends from all walks of life come to visit, guide and negotiate business!