Tianjin Nangang Seawater Desalination Project

Introduction

In the face of escalating global water scarcity, seawater desalination has become an increasingly important solution for industrial and municipal water supply.

This case presents an OEM manufacturing reference associated with the Tianjin Nangang Seawater Desalination Project, a large-scale membrane-based desalination project with a total capacity of approximately 150,000 tons per day (TPD).

In this project reference, GlobalUF participated as an OEM equipment manufacturing and fabrication partner, supporting the manufacturing, fabrication, assembly, and quality control of selected membrane system equipment and structural components according to project-specific technical requirements.

The project demonstrates the importance of reliable equipment manufacturing, corrosion-resistant materials, modular fabrication, welding quality, and dimensional control in large-scale seawater desalination applications.

Client

Tianjin Nangang Industrial Zone

Project Type: Large-Scale Seawater Desalination
Capacity: Approximately 150,000 TPD
Application: UF + Seawater Reverse Osmosis
GlobalUF Role: OEM Equipment Manufacturer / Fabrication Partner
Location: Tianjin, China

Challenge

• Large-Scale Capacity:
  A desalination project with a total production capacity of approximately 150,000 TPD requires large quantities of membrane equipment, piping, support structures, and accurately fabricated components.
• Highly Corrosive Seawater Conditions:
  Seawater and concentrated brine create demanding operating conditions for pipelines, structural components, and associated equipment, making material selection and fabrication quality particularly important.
• Membrane System Reliability:
  Ultrafiltration and reverse osmosis systems require stable mechanical construction, accurate equipment positioning, and properly fabricated piping to support reliable operation.
• Manufacturing Accuracy:
  Large membrane system assemblies require precise dimensional control, support positioning, welding, and component identification to ensure compatibility during installation.
• Site Installation Requirements:
  Equipment and support structures need to be designed and manufactured in modular sections to simplify transportation, positioning, field assembly, and future maintenance.

GlobalUF’s Solution

As an OEM equipment manufacturing and fabrication partner, GlobalUF supported the production and assembly of selected equipment and structural components according to project technical drawings, material specifications, and manufacturing requirements.

The OEM scope focused on the following areas:

• UF and RO Equipment Fabrication:
  GlobalUF provided manufacturing and assembly support for selected ultrafiltration and reverse osmosis system components based on approved project specifications.
• Corrosion-Resistant Piping Fabrication:
  Duplex stainless steel was applied to specified seawater intake and concentrate pipeline sections where enhanced corrosion resistance was required.
• Precision Welding:
  TIG welding with argon shielding was applied to relevant stainless-steel fabrication. Welding processes were controlled to achieve reliable joints and consistent fabrication quality.
• Modular Structural Fabrication:
  Equipment support structures were manufactured in modular sections to facilitate transportation, positioning, and on-site installation.
• Component Positioning and Identification:
  Supports and structural components were numbered and positioned according to assembly requirements, helping improve installation accuracy and efficiency.
• Manufacturing Quality Control:
  Inspection and quality-control procedures were applied throughout fabrication and assembly to verify workmanship, dimensional accuracy, and compliance with approved technical requirements.

GlobalUF’s participation in this reference focused on OEM manufacturing and fabrication support, rather than EPC responsibility for the design, construction, commissioning, or operation of the complete desalination plant.

Key Features of the GlobalUF OEM Manufacturing

• Optimized Equipment Fabrication:
  Manufacturing details incorporated reinforced product water end structures and support positioning features according to the approved equipment design.
• Premium Corrosion-Resistant Materials:
  Duplex stainless steel was used for specified seawater intake and concentrate piping applications to improve corrosion resistance under demanding marine conditions.
• Controlled Welding Process:
  TIG welding with argon shielding was used for applicable stainless-steel fabrication, together with controlled welding procedures to support consistent manufacturing quality.
• Modular Support Structure:
  The equipment support arrangement consisted of four columns and three layers, forming a total of 12 support units.
• Numbered and Positioned Supports:
  Structural supports and assembly components were individually identified and positioned to simplify field installation and reduce assembly errors.
• Installation-Oriented Manufacturing:
  Fabrication considered transportation, field positioning, equipment assembly, and future maintenance requirements.

Results

Through controlled OEM manufacturing and modular fabrication, the project reference demonstrates several important benefits for large-scale membrane desalination equipment:

• Improved Manufacturing Consistency:
  Controlled fabrication procedures helped improve dimensional accuracy and repeatability across equipment and structural components.
• Enhanced Installation Efficiency:
  Modular construction and numbered support components simplified transportation, field positioning, and equipment assembly.
• Improved Corrosion Resistance:
  The use of appropriate corrosion-resistant materials supported equipment durability in seawater and concentrate applications.
• Reliable Equipment Integration:
  Manufacturing according to project-specific drawings and specifications helped ensure compatibility between fabricated equipment and the overall desalination system.
• Better Maintainability:
  Modular equipment arrangements provide easier access for inspection, maintenance, repair, and component replacement.

Conclusion

The Tianjin Nangang Seawater Desalination Project reference demonstrates the manufacturing requirements involved in large-scale membrane desalination systems.

As an OEM equipment manufacturing and fabrication partner, GlobalUF supported selected UF and RO equipment, corrosion-resistant piping, structural supports, modular assemblies, and associated fabrication work according to project-specific technical requirements.

Through controlled manufacturing, material selection, welding procedures, modular fabrication, and quality inspection, GlobalUF can support EPC contractors, engineering companies, system integrators, and project partners requiring customized OEM manufacturing for seawater desalination and membrane water treatment systems.

GlobalUF provides OEM manufacturing support for applications including UF, RO, BWRO, SWRO, containerized water treatment systems, and other membrane-based water treatment equipment.

Specific equipment configurations, materials, capacities, technical parameters, scope of supply, and performance requirements are determined according to individual project specifications and contractual agreements.

Note: This page is presented as an OEM/reference demonstration case. GlobalUF’s role described above relates to selected equipment manufacturing and fabrication support and does not represent EPC responsibility for the complete 150,000 TPD desalination facility.