[Xi’an, June 11, 2026] — Ensuring the integrity of buried pipelines, urban gas networks, and storage tanks requires precise, reliable monitoring. Cathodic protection (CP) test stations are essential ground-level access points for measuring pipe potentials, current flow, sacrificial anode output, and AC/DC interference. Proper material selection and construction directly influence the accuracy and long-term durability of these monitoring systems.

Material Options & Applications

• Carbon Steel Test Stations: High mechanical strength, durable under external impacts, typically coated with epoxy, hot-dip galvanized, or powder-coated for corrosion resistance. Ideal for long-distance pipelines in harsh terrain or areas prone to mechanical interference.
• Stainless Steel Test Stations (304/316L): Excellent corrosion resistance, suitable for coastal, high-humidity, or industrial environments where appearance and longevity are critical.
• FRP / Composite Test Stations: Lightweight, electrically insulating, and chemically resistant, perfect for acidic or alkaline soils, remote locations, and areas difficult to access.
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Internal Configuration & Functionality

• Wiring: Insulated panels with brass or stainless steel terminals ensure low contact resistance.
• Function Types:
• Potential measurement
• Anode current monitoring
• Interference assessment for AC/DC stray currents

Selection Guidance

Choosing the right test station depends on soil chemistry, mechanical risks, and maintenance needs. By selecting appropriate materials—carbon steel, stainless steel, or FRP—operators can guarantee reliable CP monitoring and pipeline protection throughout the system’s design life.