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LSAW Pipe Applications
LSAW pipe is widely used for large-diameter water transmission systems where high flow capacity, structural strength, dimensional accuracy, and long-term corrosion protection are required.
It is commonly used for raw water, potable water, municipal water supply, wastewater, seawater, and industrial water pipelines.
Why Use LSAW Pipe for Water Transmission?
LSAW pipe is well suited for water transmission projects because it can be manufactured in large diameters and different wall thicknesses to meet project-specific flow and pressure requirements.
Key advantages include:
- Large Diameter: Suitable for high-capacity and long-distance water transmission.
- Flexible Wall Thickness: Can be selected according to operating pressure, burial depth, and external loads.
- High Structural Strength: Suitable for buried pipelines and demanding installation conditions.
- Dimensional Control: Supports reliable field jointing and pipeline installation.
- Customizable Production: Diameter, wall thickness, steel grade, pipe length, and end preparation can be specified according to project requirements.
Water Transmission Applications
LSAW water pipe can be used in a wide range of water infrastructure projects.
Raw Water Transmission
Used to transport water from rivers, reservoirs, lakes, or other sources to water treatment plants and storage facilities.
Potable Water
Used for treated drinking water transmission and municipal water supply systems. Internal lining and coating should meet the applicable water-contact requirements.
Municipal Water Supply
Suitable for large-diameter pipelines connecting water treatment plants, pumping stations, storage facilities, and urban distribution systems.
Wastewater
Used in wastewater transmission systems where internal corrosion protection may be required according to the chemical characteristics of the wastewater.
Seawater
Used for seawater intake, transmission, desalination, cooling water, and other marine-related water systems. Enhanced corrosion protection may be required.
Internal Lining & External Coating
For water transmission projects, internal lining and external coating provide different types of protection and are often used together.
Internal Lining
Internal lining protects the steel pipe from direct contact with water and helps maintain the internal surface.
Common options include:
- Internal Epoxy Lining
- Fusion-Bonded Epoxy (FBE)
- Cement-Mortar Lining
- Project-Specified Internal Lining
- Internal epoxy lining is commonly considered for water transmission applications where internal corrosion protection and a smooth internal surface are required.
External Coating
External coating protects the steel pipe from soil, groundwater, moisture, and other external corrosion conditions.
Common options include:
- 3PE / 3LPE
- FBE
- Polyurethane
- Other project-specified anti-corrosion systems
- For buried water pipelines, the external coating system should be selected according to soil conditions, groundwater, installation method, and project specifications.
Related: 3PE Coated SAWL Steel Pipe, 3PP Coated SAWL Steel Pipe, FBE Coated SAWL Steel Pipe
Key Specifications for LSAW Water Pipe
The main specifications normally considered for a water transmission project include:
| Specification | Typical Consideration |
|---|---|
| Pipe Diameter | Flow rate and transmission capacity |
| Wall Thickness | Operating pressure and external loads |
| Steel Grade | Strength and design requirements |
| Pipe Length | Transportation and field installation |
| End Preparation | Field welding and joint requirements |
| Internal Lining | Water quality and corrosion protection |
| External Coating | Soil and environmental conditions |
The final pipe specification should be determined according to the hydraulic design, pressure requirements, applicable standards, and project conditions.
Standards for Water Transmission Pipe
Depending on the project location and application, LSAW water pipe may be manufactured according to applicable AWWA, ASTM, API, or project-specific specifications.
For steel water pipe and protective systems, commonly referenced AWWA standards include:
- AWWA C200 – Steel Water Pipe, 6 In. (150 mm) and Larger
- AWWA C205 – Cement-Mortar Lining and Coating for Steel Water Pipe and Fittings
- AWWA C210 – Liquid-Epoxy Coatings and Linings for Steel Water Pipe and Fittings
- AWWA C213 – Fusion-Bonded Epoxy Coatings and Linings for Steel Water Pipe and Fittings
The applicable standard should be confirmed based on the water type, project location, design requirements, and purchaser's specification.
Related: LSAW Pipe Applications
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