We are a manufacturer and exporter of graphite electrodes and graphite products(flake graphite, amorphous graphite, petroleum coke, carburizer, etc). If you are interested in any of our products, please feel free contact me! we will provide you high quality goods and competitive price. 1. Graphite electrodes grade: rp, ip, hp 2. Size of graphite electrodes Diameter: 150mm, 200mm, 250mm, 300mm, 350mm. Length: 1500mm-2100mm 3. Taper nipple: 3tpi, 4tpi 4. Delivery time: 60days.