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Graphite Electrode Nipple

Graphite Electrode Nipple

Complementing UHP/HP/RP Graphite Electrodes

Graphite electrode nipples serve as essential accessories for graphite electrodes. Their primary function is to establish connections between electrode bodies, enabling the uninterrupted and continuous utilization of electrodes.

Graphite Electrode Nipple Specification

Technical Specification of Graphite Electrode Nipple
ItemResistance
(≤, µΩ·m)
Density
(≥, g/cm3)
Flexure Strength
(≥, MPa)
Elastic Modulus
(≤, GPa)
Ash Content
(≤, %)
CTE
(100 °C – 600 °C)
(≤, 10-6/°C)
Regular power6.51.6915.014.00.52.8
High Power5.51.7316.016.00.32.2
Ultra High Power4.51.7520.018.00.31.4
Dimensions of Nipple & Sockets (TPI 3)
Electrode Dia.Nipple DesignationNippleSocket
Major Dia.
(mm)
Length
(mm)
Pitch Dia.
(mm)
Depth
(mm)
Thread Length
(mm)
(inch)(mm)d1l1d4l2l3
9225139T3N139.7203.20135.49107.60103.60
10250155T3N155.57220.00151.36116.00112.00
12300177T3N177.16270.90172.95141.50137.50
14/16350/400215T3N215.90304.80211.69158.40154.40
14/16350/400215T3L215.90355.60211.69183.80179.80
16/18400/450241T3N241.30338.70237.09175.30171.30
16/18400/450241T3L241.30355.60237.09183.80179.80
20500273T3N273.05355.60268.84183.80179.80
20500273T3L273.05457.20268.84234.60230.60
22550298T3L298.45457.20294.24234.60230.60
The pin pitch diameter (d2) matches the socket pitch diameter (d4).
The socket minor diameter (d3) is calculated as the pitch diameter (d4) minus 3.16 mm.
Any alternative combinations of nominal diameter and joint specifications require mutual agreement between the supplier and user.
Dimensions of Nipple & Sockets (TPI 4)
Electrode Dia.Nipple DesignationNippleSocket
Major Dia.
(mm)
Length
(mm)
Pitch Dia.
(mm)
Depth
(mm)
Thread Length
(mm)
(inch)(mm)d1l1d4l2l3
9225139T4N139.70177.80136.5494.9090.90
10250152T4N152.40190.50149.24101.3097.30
12300177T4N177.80215.90174.64114.00110.00
14350203T4N203.20254.00200.04133.00129.00
14350203T4L203.20304.80200.04158.40154.40
16400222T4N222.25304.80219.09158.40154.40
16400222T4L222.25355.60219.09183.80179.80
18450241T4N241.30304.80238.14158.40230.60
18450241T4L241.30355.60238.14183.80179.80
20500269T4N269.88355.60266.72183.80179.80
20500269T4L269.88457.20266.72234.60230.60
22550298T4N298.45355.60295.29183.80179.80
22550298T4L298.45457.20295.29234.60230.60
24600317T4N317.50355.60314.34183.80179.80
24600317T4L317.50457.20314.34234.60230.60
The pin pitch diameter (d2) matches the socket pitch diameter (d4).
The socket minor diameter (d3) is calculated as the pitch diameter (d4) minus 3.16 mm.
Any alternative combinations of nominal diameter and joint specifications require mutual agreement between the supplier and user.
Standard Electrode Sizes & Nipple Weights
ElectrodeStandard Weight of Nipples
Nominal Electrode SizeTPI 3TPI 4
Dia. × LT3NT3LT4NT4L
inchmmlbskglbskglbskglbskg
14 × 72350 × 180032.014.524.311.0
16 × 72400 × 180045.220.546.321.035.316.039.718.0
16 × 96400 × 240045.220.546.321.035.316.039.718.0
18 × 72450 × 180062.828.575.034.041.919.048.522.0
18 × 96450 × 240062.828.575.034.041.919.048.522.0
20 × 72500 × 180079.436.093.742.561.728.075.034.0
20 × 84500 × 210079.436.093.742.561.728.075.034.0
20 × 96500 × 240079.436.093.742.561.728.075.034.0
20 × 110500 × 270079.436.093.742.561.728.075.034.0
22 × 84550 × 210073.433.394.843.0
22 × 96550 × 240073.433.394.843.0
24 × 84600 × 210088.240.0110.250.0
24 × 96600 × 240088.240.0110.250.0
24 × 110600 × 270088.240.0110.250.0
Coupling Torque Reference for Nipple & Electrode
Electrode Diameterinch891012141618202224
mm200225250300350400450500550600
Easing MomentN.m200–260300–340400–450550–650800–950900–11001100–14001500–20001900–25002400–3000

Why Choose AGRM Graphite Electrode Nipple

Features:
  • Boasts elevated bulk density and precise thread accuracy.
  • Stringently examines the tolerance of each nipple individually.
  • Bending strength thresholds are meticulously gauged.
  • High machining precision results in superior surface finish.
  • Demonstrates exceptional resistance to breakage.
  • Originates from our in-house production, devoid of outsourcing.
Applications:
  • Illustrated assembly schematic depicting a graphite electrode nipple configuration.
  • A visual representation showcasing multiple graphite electrodes with arranged nipples.
  • Graphite electrodes, in conjunction with nipple attachments, are structured into electrode columns.
  • Vital components for Electric Arc Furnace (EAF) smelting processes.

These features and applications collectively underscore the reliability, precision, and in-house production commitment embedded in our graphite electrode nipples.

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