News - Vohon Petrochemical

Choosing Between Flexible and Rigid Underground Composite Pipes for Service Stations

Choosing Between Flexible and Rigid Underground Composite Pipes for Service Stations When planning the underground piping system for a fuel service station, one of the most important technical decisions is whether to use flexible coiled pipes or rigid straight pipes. Each configuration serves specific installation conditions, and choosing incorrectly can lead to unnecessary joints, higher […]

Choosing Between Flexible and Rigid Underground Composite Pipes for Service Stations Read More »

Stage III Vapor Recovery Line Performance with HDPE+EVOH Composite Pipe – Material Selection and Installation Guide

Why Pipe Material Selection Matters in Stage III Vapor Recovery Systems Stage III vapor recovery is one of the most technically demanding subsystems in a modern gas station. Unlike conventional fuel dispensing lines, Stage III systems operate under a continuous vacuum — pulling gasoline vapors from the vehicle fuel tank back into the underground storage

Stage III Vapor Recovery Line Performance with HDPE+EVOH Composite Pipe – Material Selection and Installation Guide Read More »

How Underground Composite Pipe Technology Is Evolving in Gas Station Fuel Systems — A 2026 Industry Perspective

Key Drivers Behind the Technology Upgrade The transition from traditional single-wall steel piping to composite material systems in gas station fuel distribution is not a sudden shift but a gradual, engineering-driven evolution. Several practical factors are pushing station owners, engineering contractors, and petroleum equipment distributors to re-evaluate their pipeline material choices. Corrosion Resistance as a

How Underground Composite Pipe Technology Is Evolving in Gas Station Fuel Systems — A 2026 Industry Perspective Read More »

Proper Slope Design for Underground HDPE+EVOH Composite Pipe in Gas Station Fuel Systems

/tmp/article-content.html

Proper Slope Design for Underground HDPE+EVOH Composite Pipe in Gas Station Fuel Systems Read More »

Permeation Resistance of HDPE+EVOH Composite Pipe vs. Standard HDPE for Gas Station Vapor Recovery Lines

Why Permeation Resistance Matters in Vapor Recovery Lines In gasoline station Stage III vapor recovery systems, the underground pipes that carry fuel vapor back to the storage tank face a unique challenge: hydrocarbon permeation. Unlike liquid fuel lines where pressure and flow rate dominate engineering considerations, vapor recovery lines must maintain vapor tightness over decades

Permeation Resistance of HDPE+EVOH Composite Pipe vs. Standard HDPE for Gas Station Vapor Recovery Lines Read More »