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Graphite electrode
    SINOM Group is a top professional supplier of GRAPHITE ELECTRODE in China, in the last decade our products are exported to more than 40 countries and areas and got high reputation from our customers all over the world. As one of the largest graphite electrode suppliers in China, we introduced world top class and mature production process and advanced production equipments of graphite electrode, we commit ourselves to help the customers to reduce production cost and increase productivity.
Norminal DiameterUnit Actual Diameter (D) Norminal Length
In mm Max Min Rough spot (B)  
8'' 200 205 201 197 1600/1800
9'' 225 230 225 222 1600/1800
10'' 250 256 251 249 1600/1800
12'' 300 307 302 299 1600/1800/1900/2000
14'' 350 357 352 349 1600/1800/1900/2000/2200
16'' 400 409 403 400 1600/1800/1900/2000/2200/2400
18'' 450 460 454 451 1600/1800/1900/2000/2200/2400
20'' 500 511 505 502 1800/1900/2000/2200/2400
22'' 550 562 556 553 1800/2000/2200/2400
24'' 600 613 607 604 2000/2200/2400/2700
26'' 650 663 657 654 2400/2700/3000
28'' 700 714 708 705 2400/2700/3000

Electrode length and to allow deviations
Unit: mm
Norminal Length Tolerance Shorter length tolerance
max min max min
1600 +100 -100 -100 -275
1800 +100 -100 -100 -275
1900 +100 -100 -100 -275
2000 +100 -100 -100 -275
2200 +100 -100 -100 -275
2400 +100 -100 -100 -275
2700 +150 -150 -150 -300
3000 +150 -150 -150 -300

Note: each electrode to allow the short-foot does not exceed 15%
Cone size of graphite electrode joints
Unit: mm
Diameter Nipple Socket Pitch
D d2 L l d1 H  
Tolerance Tolerance  
  mm in -0.300 -0.300 -10   00.3 07  
3TPI 225 9 139.70 91.22 203.20 7 141.22 107.60 8.47
250 10 155.57 104.20 220.00 157.09 116.00
300 12 177.16 117.39 270.90 148.68 141.50
350 14 215.90 150.48 304.80 217.42 158.40
400 16 215.90 150.48 304.80 217.42 158.40
400 16 241.30 170.23 338.70 242.82 175.30
450 18 241.30 170.23 338.70 242.82 175.30
450 18 273.05 199.17 355.60 274.57 183.80
500 20 273.05 199.17 355.60 274.57 183.80
500 20 298.45 221.73 372.60 299.97 192.20
550 22 298.45 221.73 372.60 299.97 192.20
600 24 336.55 245.73 457.30 338.07 234.60
3TPIL 350 14 215.90 144.85 338.70 217.42 175.30
400 16 241.30 167.43 355.60 242.82 183.80
450 18 273.05 182.23 457.30 274.57 234.60
4TPI 200 8 122.24 81.48 177.80 7 115.92 94.90 6.35
225 9 139.70 98.94 177.80 133.38 94.90
250 10 152.40 109.52 190.50 146.08 101.30
300 12 177.80 130.69 215.90 171.48 114.00
350 14 203.20 149.74 149.74 196.88 133.00
400 16 222.25 160.32 304.80 215.93 158.40
450 18 241.30 179.37 304.80 234.98 158.40
500 20 269.88 199.49 355.60 263.56 183.80
550 22 298.45 228.06 355.60 292.13 183.80
600 24 317.50 247.11 355.60 311.18 183.80
650 26 355.60 268.27 457.20 349.28 234.60
700 28 374.65 287.32 457.20 368.33 234.60
4TPIL 300 12 177.80 124.34 254.00 171.48 133.00
350 14 203.20 141.27 304.80 196.88 158.40
400 16 222.25 151.86 355.60 215.93 183.80
450 18 241.30 170.91 355.60 234.98 183.80
500 20 269.88 182.55 457.20 263.56 234.60
550 22 298.45 211.12 457.20 292.13 234.60
600 24 317.50 230.17 457.20 311.18 234.60
650 26 355.64 251.38 558.80 349.28 285.40
700 28 374.65 270.39 558.80 368.33 285.40

Item Unit Norminal Diameter
UHP HP RP
ܦ400 ݦ450 ܦ400 ݦ450 ܦ300 ݦ350
Resistance E ̦m 5.5 6.5 8.5
N 4.5 5.5 6.5
Bending Strength E MPa 11.0 10.5 9.8 8.5 7.0
N 20.0 16.0 15.0
Elastic Modulus E GPa 14.0 12.0 9.3
N 18.0 16.0 14.0
Bulk Density E g/cm3 1.66 1.67 1.62 1.60 1.53 1.52
N 1.75 1.73 1.69
CTE. E 10-6/ 1.5 2.4 2.9
N 1.4 2.2 2.8
Ash % 0.3 0.3 0.5
Anmerkung: Die oben genannten Daten sind nur fr Ihre Referenz.

Graphite electrode to allow the current load and current density (recommended)
Norminal Diameter RP HP UHP
mm

Current load A

Current Density A/cm2 Current load A Current Density A/cm2 Current load A Current Density A/cm2
200 5000-6900 15-21 5500-9000 18-25    
250 7000-10000 14-20 8000-13000 18-25 9200-15100 21-30
300 10000-13000 14-18 13000-17400 17-24 13000-22000 20-30
350 13500-18000 14-18 17400-24000 17-24 20000-30000 20-30
400 18000-23500 14-18 21000-32000 16-24 25000-40000 19-30
450 22000-27000 13-17 25000-40000 15-24 32000-45000 19-27
500 25000-32000 13-16 30000-48000 15-24 38000-55000 18-27
550 32000-40000 13-16 37000-57000 15-23 48000-60000 18-24
600 38000-47000 13-16 44000-67000 15-23 52000-72000 18-24
700 45000-54000 13-16 54000-73000 15-23 62000-95000 18-24

Graphite electrodes are widely used in iron and steel, nonferrous metal smelting, as well as silicon, phosphorus smelting industry. We can provide various grades and specifications of the graphite electrodes, products with a low resistance, high physical density, oxidation resistance, and high precision machining to meet the needs of different users.
Electrode diameter and the allowable deviation
Unit: mm