Composite Corrosion Coupon

The composite corrosion coupon integrates polarized, natural, and AC monitoring cells crafted from the same base material, specifically designed for corrosion surveillance in complex environments. By standardizing the substrate, it eliminates material variables: the natural cell establishes the environmental corrosion baseline, the polarized cell quantifies cathodic protection (CP) efficiency, and the AC cell diagnoses stray current risks. This unified design consolidates traditional triple-sampling into a single deployment, drastically reducing pipeline penetrations and mitigating operational risks and costs in high-pressure settings. Based on the gravimetric method, the resulting data complies with NACE/ASTM standards, offering high precision and legal defensibility. It serves as the definitive tool for comprehensive corrosion diagnostics and CP validation across cross-country pipelines, tank bottoms, and areas susceptible to electrical interference.

KEY FEATURES

• Single-Variable Precision
• Comprehensive Diagnostics
• Data Triangulation
• Cost-Efficiency & Safety
• Standardized & Defensible

SPECIFICATIONS

• Enclosure Material:PVC
• Enclosure Dimensions:Φ80×60mm length
• Coupon Dimensions:1mm²(AC Coupon),6.5mm²(Polarized Coupon),10mm²(Natural Coupon)
• Coupon  Material:Q235, 20#,40#(Customizable)
• Operating Temp. Range:-40°C to 85°C
• Cable:Exposed for 5 meters,3×4mm²,core wire colors comply with industry standards.

APPLICATIONS

• Long-distance buried pipelines adjacent to high-voltage transmission lines or electrified railways.
• External corrosion monitoring for large-scale storage tank bottom plates.
• Corrosion auditing for complex buried pipeline networks in chemical parks.
• Cathodic protection evaluation for beach-shore/subsea oil & gas pipelines