| 1 | Supplier Profile 01 | Rod material and coating | Verify steel core grade, copper coating type, nominal copper thickness, and coating uniformity. | Material composition and coating quality affect conductivity, corrosion resistance, and service life. | Mill certificate, coating-thickness report, and independent laboratory test. |
| 2 | Supplier Profile 02 | Carbide tip composition | Confirm tungsten-carbide grade, cobalt binder percentage, grain size, and tip dimensions. | The carbide grade influences impact resistance, wear resistance, and driving performance in hard soil. | Carbide material certificate, technical datasheet, and dimensional inspection report. |
| 3 | Supplier Profile 03 | Electrical conductivity | Compare DC resistance or conductivity results for the complete finished rod, not only the raw material. | Lower resistance supports effective dissipation of fault and lightning current. | Test method, test temperature, sample length, measured resistance, and test date. |
| 4 | Supplier Profile 04 | Dimensional accuracy | Check rod diameter, length, straightness, threaded section, tip alignment, and dimensional tolerances. | Accurate dimensions improve compatibility with couplers, clamps, and installation tools. | Approved drawings, first-article inspection, and sampling inspection records. |
| 5 | Supplier Profile 05 | Mechanical and driving strength | Review tensile strength, joint strength, tip retention, impact resistance, and bending performance. | A robust rod reduces deformation, cracking, and tip separation during installation. | Mechanical test reports, installation trial records, and failure-analysis procedures. |
| 6 | Supplier Profile 06 | Corrosion resistance | Assess coating integrity, salt-spray or environmental test results, and suitability for the project soil. | Soil chemistry, moisture, and stray current can accelerate corrosion of grounding electrodes. | Environmental test report, coating adhesion test, and corrosion-control specification. |
| 7 | Supplier Profile 07 | Standards and quality system | Verify applicable IEC, UL, ASTM, or project-specific requirements and the factory quality-management system. | Documented controls improve repeatability and make technical claims auditable. | Current certificates, scope of certification, inspection plan, and calibration records. |
| 8 | Supplier Profile 08 | Customization capability | Compare available lengths, diameters, threads, carbide-tip designs, couplers, clamps, and packaging options. | Project-specific configurations can reduce installation time and interface problems. | Engineering drawings, prototype samples, change-control process, and tooling information. |
| 9 | Supplier Profile 09 | Production capacity and lead time | Compare confirmed monthly capacity, standard lead time, sample lead time, and shipment consistency. | Reliable supply is essential for projects with fixed installation schedules. | Capacity statement, production schedule, order history, and on-time-delivery records. |
| 10 | Supplier Profile 10 | Total delivered cost and support | Evaluate product price, tooling, packaging, freight, duties, warranty terms, technical support, and replacement policy. | The lowest unit price may not provide the lowest installed or lifecycle cost. | Itemized quotation, Incoterms, warranty conditions, service response time, and total-cost comparison. |