CSC Production Square Kelly and Hexagonal Kelly

# CSC Production Square and Hexagonal Kellys The Kelly is an essential component positioned at the top of the drill string, available in both square and hexagonal designs. During rotary drilling operations, when drilling is underway, the kelly connects with the square bushing and rotary table bushing to transmit the rotational torque from the surface equipment to the drill pipe, driving the drill bit forward. It also supports the weight of the drill string. In cases involving turbine or motor-driven drilling, the kelly bears the weight of the drill string and counteracts the torque generated.  ## Introduction Continental Steel Co., Ltd (CSC) specializes in producing high-quality square and hexagonal kellys that adhere strictly to API Spec 7-1 standards. These products are crafted from AISI 4145H modified, fully heat-treated alloy steel, ensuring a Brinell hardness range of 285-341 and a minimum Charpy impact value of 40 ft-lbs. Each kelly bar undergoes comprehensive ultrasonic inspection across its entire length and cross-section to ensure reliability and durability. ## Technical Specifications Below is a detailed parameter table for various sizes of square and hexagonal kellys: | Size (in) | Top Connection (LH) | Bottom Connection | I.D. (in) | Drive Section (in) | |-----------|---------------------|-------------------|-----------|--------------------| | | Standard O.D. (in) | Optional O.D. (in)| Square O.D. (in) | Hex. O.D. (in) | Square | Hex. | A | B | | 2-1/2 | 6-5/8 REG 7-3/4 | 4-1/2 REG 5-3/4 | NC26 | / | 1-1/4 | / | 3-2/7 | / | | 3 | 6-5/8 REG 7-3/4 | 4-1/2 REG 5-3/4 | NC31 4-1/8| NC26 3-3/8 | 1-3/4 | 1-1/4| 4 | 3-3/8| | 3-1/2 | 6-5/8 REG 7-3/4 | 4-1/2 REG 5-3/4 | NC38 4-3/4| NC31 4-1/8 | 2-1/4 | 1-3/4| 4-1/2| 4 | | 4-1/4 | 6-5/8 REG 7-3/4 | 4-1/2 REG 5-3/4 | NC46 6-1/4| NC38 4-3/4 | 2-4/5 | 2-1/4| 5-4/7| 4-4/5| | 5-1/4 | 6-5/8 REG 7-3/4 | / | 5-1/2 FH 7| NC46 6-1/4 | 3-1/4 | 3 | 7 | 6 | | 6 | 6-5/8 REG 7-3/4 | / | / | 5-1/2 FH 7 | / | 3-1/2| / | 6-4/5| Each kelly undergoes rigorous quality checks to meet industry standards, ensuring they deliver optimal performance under demanding conditions. Whether you're working on conventional rotary drilling or more complex directional drilling projects, our kellys provide unmatched strength and precision. If you have any specific requirements or need further assistance, feel free to reach out to our team. We are committed to providing tailored solutions that meet your operational needs.

Lithium Negative Cathode Material Crusher Equipment

I.Special equipment can be selected according to different raw materials, full automatic control, low energy consumption, no dust pollution in the processing process, clean and environmental protection, crushing precision in D50=5-17 micron between arbitrary adjustable. The particle shape is good and the curve is concentrated. It is widely used in crushing and grading of raw coke, raw coke, needle coke and calcined coke.

II.Full negative pressure design, high crushing and grading precision, particle size shaping, low energy consumption, small wear. Stone grinding granularity concentration, high classification accuracy, large output!

III.The average particle size of the material can reach 1-45 microns, and the particle size can be adjusted arbitrarily. It is an indispensable processing equipment for the battery material industry. Then the question comes, to what extent does the air pulverizer crush? It is related to the following factors: A. The initial fineness of the raw material, the airflow mill generally requires the feed to be below 50 mesh. B. It is related to the physical properties of the material, the fluidity of the material and the uniformity of the particles. Some materials flow...

1, the initial fineness of raw materials, air pulverizer generally requires the feed to be below 50 mesh.

2. It is related to the physical properties of the material, the fluidity of the material and the uniformity of the particles. Some materials have poor fluidity, many impurities, high solvent content, and there may be blockage in the production process. At this time, it is necessary to use special equipment to do it. Not all materials can be crushed with standard equipment to achieve the fineness of crushing.

3. It is related to the crushing pressure in the crushing process. Some equipment feed pressure is greater than the crushing pressure, and some equipment crush pressure is greater than the feeding pressure.

4, and feeding speed has a relationship, not all the material mobility is good, whether it is the use of screw feed or vibration feed, feeding process is a very important factor, some very fine material is difficult to feed, at this time you need to use a special personalized configuration to achieve the feeding effect.

5. It is related to the optimization degree of air mill. There are many manufacturers of air mill, but the fineness of the same material is different from that of different manufacturers, even if the fineness of different models of equipment from the same manufacturer is different. But as a rule of thumb, devices that are larger than the shredder plate produce better results than smaller ones.

6. The operation method is related to the proficiency of the operator. Some equipment needs to be started with small pressure operation first, and some directly operate in one step.

It can be seen from the above that the fineness of the airflow mill is not fixed, but adjustable. Because of this, it has become a favored processing equipment in various industries, which can meet the diverse needs of different users.

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Shandong Jing Xin Powder Equipment Technology Co., Ltd. , https://www.jxpowder.com