| Product dimensions | Nominal diameter: 200 mm; nominal electrode length: 1,800 mm. | Confirm dimensional tolerances, measurement method, and whether the quoted length refers to the electrode body or an assembled column. |
| Grade classification | Graphite electrodes are commonly classified as RP, HP, or UHP; grade designations and limits can differ between producers. | Request the supplier’s grade definition and technical data sheet rather than comparing grade labels alone. |
| Typical applications | Graphite electrodes conduct electricity and provide heat in electric arc furnace steelmaking; electrode use also occurs in other suitable electric-furnace processes. | Match the grade and electrode size to furnace design, operating current, and process conditions. |
| Raw materials | Graphite electrodes are made from carbon-based materials. Needle coke is commonly associated with higher-performance electrode production; petroleum coke is also used, depending on product and process. | Ask about material specifications and batch traceability if raw-material consistency is important to the application. |
| Electrical performance | Electrical resistivity is a key specification. Permitted values depend on the grade and the manufacturer’s product standard. | Compare stated test values and test methods for the electrode body and nipple separately where applicable. |
| Physical and mechanical properties | Bulk density, flexural strength, and coefficient of thermal expansion are among the properties used to assess electrode performance. | Request current test results and confirm that reported values correspond to the quoted grade and size. |
| Nipple and connection | Electrodes are connected into columns using threaded nipples. Connection dimensions and thread specifications must be compatible. | Confirm nipple size, thread type, machining tolerances, and whether nipples are included in the quotation. |
| Quality documentation | Supplier documentation may include a product data sheet, inspection record, and batch-specific test certificate. | Agree on required documents, acceptance criteria, sampling, and inspection arrangements before ordering. |
| Supplier-market comparison | China-based suppliers offer graphite electrode products for domestic and export markets. Capabilities, grades, specifications, and service arrangements vary by supplier. | Compare verified production capability, product consistency, lead time, export experience, and after-sales support; this table does not rank or identify companies. |
| Packaging and shipment | Packaging and loading arrangements should protect the electrodes and threaded ends during handling and transport. | Specify packaging, marking, loading method, delivery terms, and responsibility for transport-related damage in the purchase contract. |