#Industry News
Innovative Buoyancy Solutions Power World’s Largest HDPE Pipeline Installation in Saudi Arabia’s Jazan Industrial City
Project Case Study: DOOWIN’s Inflatable Buoyancy Units Enable Breakthrough in Offshore Engineering
Project Overview
The Jazan Industrial City Seawater Cooling Project, a landmark infrastructure initiative in Saudi Arabia, has achieved a historic milestone with successfully installing the world’s largest high-density polyethylene (HDPE) pipeline in an unprotected marine environment. Led by China Harbour Engineering Company (CHEC) and constructed by CCCC Fourth Harbor Engineering Co., Ltd., this project features a 6.6-kilometer-long HDPE pipeline with a record-breaking diameter of 3.5 meters. The first installed segment alone spanned 338 meters and weighed approximately 1,500 metric tons.
Engineering Challenges
Installing massive HDPE pipelines in open-sea conditions posed significant technical challenges, including:
Managing the buoyancy and stability of ultra-large pipelines during submersion.
Avoiding structural stress or deformation during offshore transportation.
Ensuring precision alignment in dynamic marine environments.
Breakthrough Solution: DOOWIN’s Inflatable Buoyancy Units
A critical factor in overcoming these challenges was deploying custom-engineered Inflatable Buoyancy Units Airbags produced by DOOWIN. These cutting-edge solutions played a pivotal role in the pipeline’s safe and efficient installation:
Buoyancy Control for Mega-Pipelines
Our airbags provided adjustable buoyancy to counterbalance the pipeline’s immense weight (1,500 tons per segment), enabling controlled submersion and minimizing stress on the HDPE structure. The modular design allowed engineers to fine-tune buoyancy levels to match tidal and current conditions.
Offshore Stability in Unprotected Waters
Specially designed to withstand harsh open-sea environments, the airbags maintained pipeline stability during critical offshore towing and positioning phases. Their high-tensile outer layer resisted abrasion from waves and debris, ensuring operational reliability.
Efficient Deployment & Retrieval
The reusable airbag system streamlined installation workflows, reducing project timelines and costs. Post-installation, the units were safely deflated and retrieved for future projects, aligning with sustainable engineering practices.
Precision Alignment
Integrated pressure sensors within the airbags enabled real-time monitoring, allowing engineers to adjust positioning with millimeter-level accuracy during submersion—a vital feature for the pipeline’s long-term leak-proof performance.
Project Success & Industry Impact
The successful installation of the Jazan pipeline marks a global engineering benchmark. By leveraging DOOWIN’s buoyancy technology, the project team:
Achieved zero structural damage to the HDPE pipes during installation.
Reduced offshore installation time by 30% compared to conventional methods.
Set a new standard for large-diameter HDPE pipeline deployment in challenging marine environments.
Why DOOWIN Inflatable Buoyancy Units?
This project underscores our commitment to delivering innovative marine engineering solutions. Our Inflatable Buoyancy Units airbags are designed for:
Heavy-Duty Performance: Rated for loads exceeding 2,000 tons.
Environmental Resilience: Corrosion-resistant materials suitable for saltwater applications.
Customization: Scalable designs tailored to project-specific requirements.
Looking Ahead
As global demand grows for durable, corrosion-resistant pipelines, DOOWIN remains at the forefront of buoyancy technology. We invite industry partners to explore how our solutions can elevate your next marine engineering endeavor.
For technical specifications or collaboration inquiries, contact [Your Company Contact Information].
About DOOWIN
DOOWIN is a professional manufacturer of various buoyancy units, underwater air lift bags, and crane test water weight bags.
