Case Study: Dual-Layer Co-Extrusion Pipes for South Korean Agricultural Irrigation

Background

A South Korean agricultural cooperative contacted us to source white-outside, black-inside dual-layer HDPE pipes for a 50-hectare greenhouse irrigation project. The pipes needed UV resistance (from the white outer layer) and pressure durability (from the black inner layer) to withstand Korea’s seasonal temperature fluctuations.

Execution

1. Precision Customization

We confirmed specifications: DN160 diameter, 6m length, PN10 pressure rating, and compliance with ISO standards. Our dual-layer co-extrusion production line ensured uniform bonding between the UV-stabilized outer layer and high-density inner core.

2. Logistics Optimization

We loaded 2x40HQ containers at our factory, using custom racks to prevent pipe deformation during transit. The shipment departed Shanghai Port and arrived at Busan within 7 days, meeting the client’s tight planting-season deadline.

3. Technical Compliance

We provided full material test reports (MTRs) and ISO certification documents, ensuring seamless customs clearance and project approval.

Outcome

The client successfully installed the irrigation system ahead of schedule, reporting 20% longer pipe lifespan compared to their previous single-layer materials. This partnership led to a 3-year framework agreement for annual pipe supplies to their regional greenhouse network.