LSAW Pipe
LSAW Pipe
Emirerri Steel is a trusted name in the global steel industry, offering a wide range of high-quality piping solutions, including Longitudinal Submerged Arc Welded (LSAW) Pipes. Engineered for strength, durability, and reliability, our LSAW pipes are widely used across industries such as oil & gas, petrochemicals, water transportation, construction, and more. With a strong commitment to quality and precision, Emirerri Steel manufactures and supplies LSAW pipes that meet the highest international standards.
What is an LSAW Pipe?
LSAW pipes are made by bending and welding steel plates longitudinally. The welding process used is known as Submerged Arc Welding (SAW), which ensures a clean, high-integrity weld seam. The longitudinal welding makes LSAW pipes exceptionally strong and ideal for high-pressure and high-load applications.
Unlike spiral welded pipes (SSAW), which have helical welds, LSAW pipes have a straight seam weld, enhancing their structural integrity and axial strength. This makes them suitable for transporting hydrocarbons over long distances and in harsh environments.
Why Choose LSAW Pipes?
- High-pressure resistance is critical
- Tough terrain or deep-sea installations are involved
- Large-diameter, thick-wall pipes are needed
- Strict adherence to dimensional tolerances and welding quality is essential
Manufacturing Process of LSAW Pipes
Plate Selection: High-quality steel plates sourced from reputed mills
Edge Milling: Precision edge preparation for optimal weld quality
Forming: Steel plate is rolled into a U-shape and then into an O-shape using advanced forming presses
Welding: Inner and outer seams are welded using Submerged Arc Welding (SAW)
Heat Treatment: To relieve residual stresses and improve mechanical properties
Non-Destructive Testing (NDT): 100% Ultrasonic testing and Radiographic testing for weld seam integrity
Hydrostatic Testing: Ensures the pipe can withstand operating pressures
Finishing and Coating: Surface finishing and anti-corrosion coating as per client specifications
Final Inspection & Packing: Dimensional check, marking, and protective packaging for dispatch
LSAW Pipes Specification
| Parameter | Description |
|---|---|
| Product Name | LSAW (Longitudinal Submerged Arc Welded) Pipe |
| Manufacturing Process | Steel plates rolled and welded longitudinally using submerged arc welding |
| Standard | API 5L, ASTM A252, ASTM A671/A672, EN 10210/10219, ISO 3183, CSA Z245.1, DNV |
| Grades Available | API 5L Gr. B/X42/X52/X60/X65/X70/X80, ASTM A252 Gr.1/2/3, EN S355J2H, ISO L360 |
| Outer Diameter (OD) | 16″ to 60″ (406mm to 1524mm) |
| Wall Thickness | 6mm to 50mm |
| Length | 6m to 18m (custom lengths on request) |
| Ends | Beveled, Plain End, Threaded with Coupling |
| Surface Coating | Black Painted, Anti-corrosion Coated (FBE, 3LPE, etc.), Bare |
| Applications | Oil & Gas Transportation, Offshore Platforms, Structural Applications, Water Transmission |
| Welding Type | Double Submerged Arc Welding (DSAW) |
| Certifications | ISO, CE |
LSAW Pipe Standards & Grades
API 5L Grade B x42
API 5L Grade B x46
API 5L Grade B X52
Api 5L Grade B x56
API 5L Grade B x60
API 5L Grade B x70
API 5L Grade B x80
ASTM A53 Gr A & B
ASTM A252
EN 10219
ISO 3183
ISO 3183
Applications
1. Oil & Gas Industry
Used for cross-country pipelines carrying crude oil, natural gas, and refined petroleum products.
2. Water Transmission
Large-diameter LSAW pipes are widely used in water supply networks, sewage treatment plants, and desalination systems due to their long service life and resistance to corrosion.
3. Structural and Construction Projects
Used in the construction of bridges, piling, and structural supports for skyscrapers and industrial buildings.
4. Power Generation
Utilized in power plants for transporting cooling water, fuel, and other fluids under high-pressure conditions.
5. Shipbuilding and Marine Applications
LSAW pipes are often used in offshore platforms, jack-up rigs, and subsea pipeline networks where durability in harsh environments is key.