Our company is enterprising manufacture,supply and export of graphite products.

Zhengnai Industry co., LTD

RP|HP|SHP|UHP|Graphite Electrode Suplier

+86 19903830057zhengnaishiye@gmail.com

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Our Commitment

Release time:2019-11-06 From: Zhengnai Industry in China

Quick delivery

  • 1.Graphite electrodes are covered with rainproof tarpaulin during long-distance transportation.
  • 2.When unloading the electrodes packed with wooden cases by hoisting machine, the steel wire rope must be used. The steel packing belt of the electrode shall not be directly hoisted and unloaded.
  • 3.To protect the end face and thread of the electrode, the electrode shall not be transported directly by steel hook to hooking.
  • 4.When loading and unloading joint box, handle with care to prevent thread damage.



Stable product quality, all series products can meet the national standards and has a long service life in actual use and good reputation at home & abroad.

Good service

Our company has a special international trade department, and foreign trade personnel in small languages are responsible for docking. There will be no difficulty in language communication, which is enough to solve your problem.
Technicians are experienced and have a unique way to build and handle things.
Please believe that we are a professional team

Size of RP graphite electrode

Item Unit RP
300-500mm 550-800mm
Electric resistivity Electrode μΩm 7.5-8.6 7.5-8.8
Nipple 4.5-6.0
Bending strength Electrode Mpa ≥7.5 ≥6.5
Nipple ≥16.0
Elastic modulus Electrode Gpa ≤9.0
Nipple ≤13.0
Bulk density Electrode g/cm3 1.54-1.62
Nipple 1.70-1.78
CTE(100-600℃) Electrode 10-6/℃ 2.20-2.60
Nipple 1.50-1.90
Ash % ≤0.3

best quotation

The price of our company's products is very reasonable, even lower than the market price. At the same time, the quality of our products is very good and can meet international standards. Our price is very competitive. You can inquire from us at ease.

Graphite electrode for EAF

Graphite electrodes serve to transfer the electrical energy from the power supply to the steel melt in the EAF bath. They are typically made using premium petroleum needle coke, coal tar pitch, and some additives
Artificial graphite electrodes are currently a standard in EAF operations. Raw materials are petroleum coke (needle type is preferred) and coal tar pitch. They are mixed and processed at high temperature in several steps. 
Electrode water cooling was first adopted by Nippon Steel Corporation, and then most companies followed. Main advantage is to decrease side consumption. Large DC furnaces with only one electrode obliged to the development of very large electrodes, 800 mm diameter. Some development work has been carried out recently to avoid some drawbacks of the nipple system joining two electrodes.