Size of Graphite Electrode
| Nominal diameter |
Actual diameter |
Diameter Tolerance |
Nominal length |
|
mm
|
inch
|
mm
|
Min(mm)
|
Max(mm)
|
mm
|
inch
|
|
200
|
8
|
203
|
200
|
205
|
1500,
1800
|
60,72
|
|
250
|
10
|
254
|
251
|
256
|
|
300
|
12
|
305
|
302
|
307
|
|
350
|
14
|
356
|
352
|
357
|
|
400
|
16
|
406
|
403
|
409
|
1500,1800,2100
|
60,72,84
|
|
450
|
18
|
457
|
454
|
460
|
1500,1800,2100,2400
|
60,72,84,96
|
|
500
|
20
|
508
|
505
|
511
|
1800,2100,2400,2700
|
72,84,96,108
|
Tolerance of Length
| Nominal Length |
Tolerance |
| Minimum |
Maximum |
|
mm
|
inch
|
mm
|
mm
|
|
1000
|
40
|
-75
|
+50
|
|
1200
|
48
|
-100
|
+50
|
|
1500
|
60
|
-100
|
+100
|
|
1800
|
72
|
-100
|
+100
|
|
2100
|
84
|
-100
|
+100
|
|
2400
|
96
|
-100
|
+100
|
|
2700
|
100
|
-150
|
+150
|
Dimension of Truncated Cone Nipples (4TPI)
| Standard Nipple T4(4 TPI) |
|
Electrode Nominal Diameter
|
Nipple
|
Nipple socket
|
|
Mm
|
inch
|
A/mm
|
L/mm
|
B/mm
|
S/mm
|
|
200
|
8
|
122.24
|
177.80
|
115.92
|
91.90
|
|
250
|
10
|
152.40
|
199.50
|
146.08
|
101.30
|
|
300
|
12
|
177.80
|
215.90
|
171.48
|
114.00
|
|
350
|
14
|
203.20
|
254.00
|
196.88
|
133.00
|
|
400
|
16
|
222.25
|
304.80
|
215.93
|
158.40
|
|
450
|
18
|
241.30
|
304.80
|
234.98
|
158.40
|
|
500
|
20
|
269.88
|
355.60
|
263.56
|
183.80
|
Dimension of Truncated Cone Nipples (3TPI)
| Standard Nipple T3(3 TPI) |
|
Electrode Nominal Diameter
|
Nipple
|
Nipple socket
|
|
Mm
|
inch
|
A/mm
|
L/mm
|
B/mm
|
S/mm
|
|
250
|
10
|
155.88
|
220.10
|
147.14
|
113.05
|
|
300
|
12
|
177.17
|
270.90
|
168.73
|
138.45
|
|
350
|
14
|
215.90
|
304.80
|
207.47
|
155.40
|
|
400
|
16
|
241.30
|
338.60
|
232.87
|
172.30
|
|
450
|
18
|
273.05
|
355.60
|
264.62
|
180.80
|
|
500
|
20
|
298.45
|
372.50
|
290.02
|
189.25
|
|