Introduction I. Introduction detection test piles for cathodic protection parameters, an important parameter to measure the cathodic protection potential cathodic protection system is mainly distributed points, electrical insulation current, grounding resistance, insulation device status monitoring anode operation measuring devices. The device is equipped with six terminals, you can easily compose potential, according to the specific requirements of the current design units, sacrificial anodes, insulation test piles or crossover pipe test piles. Test pile by pile, test wiring boards, test leads and nameplate several parts. Second, the classification test piles: Material: steel test piles, cement test piles, test piles of plastic, glass, steel test piles. Steel test piles are divided into piles and stainless steel test test piles. Third, the specification model commonly used test piles Model Specifications Model Specifications length × diameter × thickness (length × width × height mm) Material CS-1 3000 × Φ108 × 4 carbon CS-2 1800 × Φ89 × 3 steel CS-3 1200 × 120 × 120 stainless steel CS-4 1600 × 120 × 120 cement CS-5 1800 × Φ89 × 4 FRP