UHP RP HP Grade Carbon Graphite Electrode with Nipples 200-700mm

Standard for RP Graphite Electrodes and Nipples
ItemsUnitNominal diameter (mm)200-300350-600780-1400
Specific resistanceElectrode
Nipple μΩ .m7.5-8.5
6.5-7.07.5-8.5
6.5-7.08.5-10.5
6.5-7.0
Transverse strengthElectrode
NippleMPa≥8.5
≥13.0≥7.8
≥13.0≥6.0
≥13.0
Elastic moduleElectrode
NippleGPa≤9.3
≤13.0≤9.3
≤13.0≤12.0
≤13.0
Ash contentElectrode
Nipple%≤0.3≤0.3≤0.3
Bulk densityElectrode
Nippleg/cm³1.55-1.60
1.63-1.681.55-1.60
1.63-1.681.59-1.62
1.65-1.70
(C.T.E)Electrode
Nipple10-6с≤2.9
≤2.7≤2.9
≤2.8≤2.9
≤2.8
Allowable Current of RP Graphite ElectrodesNominal diameter (mm)allowable currentmmAA/c200-30010000-1300015-21350-60013500-3200014-19Regular Power Graphite Electrodes are made of high quality petroleum coke and coal tar pitch produced by Petro China Fushun Petrochemical Company. They are refined by calcining, proportioning, mixing, pressing, roasting, graphitizing and machining. The nipples are made by one- immersion and two-firing process.Standard for HP Graphite Electrodes and NipplesItemsUnitNominal diameter (mm)200-300350-600
Specific resistanceElectrode
Nipple μΩ .m5.2-6.5
4.8-5.25.5-6.8
4.8-5.0
Transverse strengthElectrode
NippleMPa≥11.0
≥16.0≥11
≥16.0
Elastic moduleElectrode
NippleGPa≤11.0
≤15.0≤11.0
≤15.0
Ash contentElectrode
Nipple%≤0.3≤0.3
Bulk densityElectrode
Nippleg/cm³1.64-1.70
1.73-1.791.63-1.70
1.73-1.79
(C.T.E)Electrode
Nipple10-6с≤2.4
≤2.2≤2.4
≤2.2

Allowable Current of HP Graphite Electrodes
Nominal diameter (mm)allowable currentmmAA/c200-30013000-1740017-24350-60017400-5800015-23
Standard for Ultra High Power Graphite Electrodes and NipplesItemsUnitNominal diameter (mm)200-300350-600
Specific resistanceElectrode
Nipple μΩ .m4.8-5.5
3.6-4.54.8-5.6
3.6-4.5
Transverse strengthElectrode
NippleMPa≥11.0
≥18.0≥11.0
≥18.0
Elastic moduleElectrode
NippleGPa≤13.0
≤17.0≤13.0
≤17.0
Ash contentElectrode
Nipple%≤0.3≤0.3
Bulk densityElectrode
Nippleg/cm³1.67-1.72
1.75-1.821.65-1.72
1.75-1.82
(C.T.E)Electrode
Nipple10-6с≤1.5
≤1.4≤1.5
≤1.4Allowale Current of Ultra High Power Graphite Electrodes
Nominal diameter (mm)(allowable current)mmAA/c200-30013000-2200020-30350-60020000-7200019-24
Dimensions for Graphite electrode conical nipplesDimensions for Graphite electrode conical nipplessocket plugDd2LId1H≤type-0.30-0-0.30 0-1- 070-0.30-78.473TPI2259″139.791.22203.2141.22107.625010″155.57104.2220157.0911630012″177.16117.39270.9148.68141.535014″215.9150.48304.8217.42158.440016″215.9150.48304.8217.42158.440016″241.3170.23338.7242.82175.345018″241.3170.23338.7242.82175.345018″273.05199.17355.6274.57183.850020″273.05199.17355.6274.57183.850020″298.45221.73372.6299.97192.255022″298.45221.73372.6299.97192.260024″336.55245.73457.3338.07234.63TPIL35014″215.9144.85338.7217.42175.340016″241.3167.43355.6242.82183.845018″273.05182.23457.3274.57234.64TPI2008″122.2481.48177.87115.9294.96.352259″139.798.94177.8133.3894.925010″152.4109.52190.5146.08101.330012″177.8130.69215.9171.4811435014″203.2149.74254196.8813340016″222.25160.32304.8215.93158.445018″241.3197.37304.8234.98158.450020″269.88199.49355.6263.56183.855022″298.45228.06355.6292.13183.860024″317.5247.11355.6311.18183.865026″355.6268.27457.2349.28234.670028″374.65287.32457.2368.33234.64TPIL30012″177.8124.34254171.4813335014″203.2141.27304.8196.88158.440016″222.25151.86355.6215.93183.845018″241.3190.91355.6234.98183.850020″269.88182.55457.2263.56234.655022″298.45211.12457.2292.13234.660024″317.5230.17457.2311.18234.665026″355.64251.38558.8349.28285.470028″374.65370.39588.8368.33285.4Hebei Gronn Carbon Co., Ltd. is located in Handan, Hebei, China. It is a modern foreign trade enterprise which mainly produces graphite electrodes, graphite crucibles and graphite powders. The annual export volume of products exceeds 10,000 tons. The company's carbon production base is located in Chengan, Handan City, Hebei Province, which is well known as "Carbon base in North China". It is adjacent to Beijing-Guangzhou Railway and Beijing-Hong Kong-Macau Expressway in the West and the junction of Beijing-Hebei-Shandong-Henan Provinces and it has convenient transportation and superior geographical position. We can provide carbon materials and products for various fields. The product quality is excellent. It has passed the certification of ISO 9001 international quality management system. All export products conform to international quality standards.