Permanent Conductivity for Safer Fueling Systems

Background

OPW, a global leader in fuel piping systems for gas stations, needed to ensure long-term safety and static-free operation in multilayer fuel pipelines. Eliminating electrostatic build-up is critical to preventing sparks that could lead to fires or explosions. 

Challenge

To meet ATEX (EU), UL (US), and GB (China) explosion-proof requirements, OPW required a conductive interlayer for its five-layer pipe that offered:

• Interlayer compatibility for strong adhesion within the multilayer structure
• Processing stability: precise melt-flow, thermo-oxidative stability, and controlled crystallization and shrinkage rates during co-extrusion
• Functional reliability: stable, permanent surface conductivity over years of service in harsh outdoor environments 

Solution

Premix provided PRE-ELEC® TP 11820, a high-density polyethylene (HDPE) compound engineered with special conductive carbon black to deliver: 

• Low surface resistivity (<10⁴ Ω/sq) ensuring permanent static-dissipative properties 
• Excellent mechanical properties for strength and durability 
• Outstanding processability—ideal melt-flow index and thermal stability for multilayer pipe co-extrusion and welding 
• Certified compliance with ATEX, UL, and GB safety standards 
• This material forms the critical fourth layer of OPW’s five-layer fuel pipe, providing a continuous conductive path to safely dissipate static electricity.
  
   

Results / Benefits

• Enhanced Safety – Permanent conductivity protects against static discharge, reducing fire and explosion risk. 
• Proven Reliability – Years of successful global field use with stable ESD performance. 
• Competitive Advantage – ATEX/UL/GB certifications and stable quality give OPW a strong position in project bids.