The Jazan Integrated Gasification Combined Cycle (JIGCC) seawater intake and outfall pipeline project is part of Saudi Arabia’s Jazan Economic City initiative. Its purpose is to supply seawater for industrial applications such as cooling, desalination and fire protection, as well as to discharge treated wastewater into the deep sea.

The project features the largest-diameter HDPE subsea pipeline installation in the world, with a total length of approximately 6,600 meters and a pipe diameter of 3.5 meters, capable of delivering 530 million liters of seawater per day.

After the large-diameter and ultra-long HDPE drainage pipe was transported to the designated sea area, it was sunk into the foundation trench excavated on the seabed. The design and construction team designed and used high-strength geotube bags. After the geotube bag is filled with sea sand, a large volume of the overall structure is formed, covering the top of the drainage pipe sunk into the foundation trench, preventing the anchoring of ships at sea or the trawling of fishing boats from damaging the drainage network laid in the foundation trench.

• Material: PET high-strength woven geo tubes
• Quantity: 80,000 m²
• Tensile Strength (MD/CD): 150 KN/m
• Elongation: 30%
• Apparent Opening Size (AOS): 0.30 mm

• Water Permeability: 817 L/min/m²
• Mass per unit area: 600 g/m²
• UV Resistance (500 hours): ≥ 85%
• Bursting Strength: ≥ 18 KN (CBR test)
• Standard Compliance: GB/T 17640—2008

Throughout the project lifecycle, the geo tubes supplied by HOKBG met or exceeded all mechanical and environmental specifications. The materials performed well under the region’s extreme climate conditions and received high praise from both the general contractor (CHEC) and the project owner.

All designs are based on our product parameters. Accidents caused by using other companies' products have nothing to do with us.