Our qualification
After years of continuous innovation and development, Jianglong has built the perfect carbon production processes including calcining, forming, baking, impregnation, graphitization and machining and also has advanced inspection and testing facilities and techniques. The company can make full use of the energy advantages around the plant such as unique coke oven gas and electric power to save cost. Jianglong has been awarded ISO 9001: 2015, ISO 14001: 2015, OHSAS18001: 2007 certifications. It has controllable production, stable product quality, advanced environmental protection equipment for each process.
Our Products
Jianglong Group has five subsidiaries, covering a total area of 400, 000 square meters, having 588 employees. The main products of Jianglong are Ø 50 mm to 700 mm Ø ultra high power (UHP), High power (HP) graphite electrodes with annual output of 60, 000 tons, as well as high quality carbon additive and other negative electrode new materials with annual output of 30, 000 tons.
Quality Control
UHP grade graphite electrode
Grade: RP, RPI, HP, SHP, UHP Diameter: 50~ 600 mm (2 ~ 24 inch)
Length: 1000-2700mm Nipple: 3TPI, 4TPI, 4TPIL
Subject | Nominal Diameter (mm) | ||||
300~400 | 450~550 | 600~700 | |||
Specific Resistance/ µ Ω· m | <= | Electrode | 6.0 | 5.5 | 5.2 |
Nipple | 4.5 | 4.0 | 3.8 | ||
Flexural Strength/MPa | >= | Electrode | 10.0-14.0 | 10.0-14.0 | 10.0-14.0 |
Nipple | 20.0-26.0 | 20.0-26.0 | 20.0-26.0 | ||
Elastic Modulus/GPa | <= | Electrode | 9.0-13.0 | 10.0-14.0 | 10.0-14.0 |
Nipple | 15.0-18.0 | 15.0-18.0 | 15.0-18.0 | ||
Ash content/% | <= | Electrode | 0.3 | 0.3 | 0.3 |
Nipple | 0.3 | 0.3 | 0.3 | ||
Bulk Density/(g/cm3) | >= | Electrode | 1.68-1.74 | 1.70-1.74 | 1.70-1.74 |
Nipple | 1.77-1.82 | 1.78-1.84 | 1.78-1.84 | ||
C.T.E. (10-6/ ºC ) (room tempreture~600 ºC ) | <= | Electrode | 1.1-1.4 | 1.1-1.4 | 1.1-1.4 |
Nipple | 0.9-1.2 | 0.9-1.2 | 0.9-1.2 |
Nominal Diameter | UHP Graphite Electrode | ||
mm | inch | Current-Carrying Capacity(A) | Current Density(A/cm2) |
350 | 14 | 20000-30000 | 20-30 |
400 | 16 | 25000-40000 | 20-30 |
450 | 18 | 32000-49000 | 20-30 |
500 | 20 | 40000-58000 | 20-30 |
550 | 22 | 48000-65000 | 18-28 |
600 | 24 | 52000-78000 | 18-28 |
650 | 26 | 60000-88000 | 18-28 |
700 | 28 | 62000-98000 | 18-28 |
Nominal Diameter (mm) | Torque (N-m) |
300 | 500-650 |
350 | 700-950 |
400 | 850-1150 |
450 | 1050-1400 |
500 | 1300-1700 |
550 | 1850-2400 |
600 | 2500-3800 |
650 | 3900-4300 |
700 | 4400-5200 |
Programmable properties