Electrofusion welding is the standard way to join HDPE-EVOH composite fuel piping on a gas station forecourt. The pipe ends are scraped clean, held in rigid alignment inside a clamp, and an electrofusion coupler with an embedded heating coil is connected to a welding control box. During the fusion cycle, the coil melts the pipe […]

When a gas station replaces its underground fuel piping, the choice usually comes down to composite piping or steel piping. Composite piping — typically HDPE with an EVOH barrier layer — has become the common choice for new builds and retrofits, while steel pipe is still used where site conditions, existing specifications or local practice

Quick answer: replacing corroded buried steel lines with composite piping is one of the highest-return upgrades a fuel station can make. A retrofit follows five steps: inventory the existing run, pull or abandon the old line, install the new composite run with electrofusion joints, pressure test before backfill, and document everything. Most sites keep the

Quick answer: effective leak detection for underground fuel piping at gas stations relies on three layers working together — a line leak detector (LLD) on the submersible pump, continuous interstitial monitoring of double-wall piping, and periodic precision pressure testing. For operators specifying composite piping, all three layers can be integrated at the design stage rather

Pressure testing confirms that an underground composite fuel piping system is tight before it is covered with backfill and put into service. A sound site procedure follows five stages: document the test plan, isolate and fill the piping, hold the test pressure, inspect every joint and connection, and record the results before backfilling. Testing composite