Made from high quality petrolum coke by etruding, sintering, graphitization and machining Used in furnaces for metal melting Specifications:OD:350mm, 300mmID:180mmLength: 380, 400, 430, 460, 480mmTechnical properties: Technical propertiesRegular powerImpregnatedResistance ≤(μΩ.m)9-9.57-7.2Rupture strength ≥(Mpa)1313Bulk density ≥(g/cm3)1.55-1.581.64-1.67Allowed current load (A)4000-50006000- ...