graphite electrode: 1.Grade: RP 2.Diameter, 250-255 mm 3.Length, 1800mm(+,-100mm) 4.Nipples, 3TPI,4TPI Specification of RP graphite electrode: UnitNominal Diameter(mm)250 Specific Resistance (not over)Electrode NippleμΩ.m8.55.0 Bending Strength (not below)Electrode NippleMpa7.8 13.0 Elastic Modulus (not over)Electrode NippleGpa9.3 14.0 Bulk Density (not below)Electrode Nippleg/cm31.551.72 CTE(100 ...