LSAW Pipe For High Pressure Pipeline

Tianjin Brisk Steel is one of the manufacturers of LSAW Pipe For High Pressure Pipeline in China. Our products are mainly exported to the Middle East, Southeast Asia, Europe, New Zealand, and other regions.If you would like to learn more about our products, feel free to contact us and send your purchase list.

 PRODUCT

Tianjin Brisk Steel focus on produce and supply hollow section and steel pipe

• High-pressure LSAW pipe is a longitudinal submerged arc welded steel pipe optimized for extreme pressure pipeline systems. Different from spiral welded pipes, it adopts whole steel plate forming process, with single straight weld seam welded by internal and external multi-pass submerged arc welding. The entire production process includes plate trimming, precision JCOE/UOE cold forming, stress relief treatment, full-body non-destructive testing (NDT), and cold expansion calibration, ensuring uniform wall thickness, stable mechanical properties and zero weld defects.

• Thanks to deep weld penetration, low residual stress and excellent pressure-bearing capacity, LSAW steel pipe perfectly adapts to long-term high-pressure, cyclic load and harsh environmental working conditions, effectively avoiding pipeline leakage, deformation and rupture risks, which is irreplaceable for key high-pressure pipeline projects.

LSAW JCOE Production Process

LSAW UOE Production Process

Exceptional Pressure & Structural Resistance

LSAW pipes are manufactured using a single straight longitudinal weld seam. Because they are formed from high-quality, hot-rolled steel plates, they exhibit uniform wall thickness and excellent dimensional tolerances. This structural uniformity allows them to handle higher internal operating pressures compared to other welded pipe variations.

High-Grade Material Compliance

Our production facilities utilize superior carbon and alloy steel to meet strict international standards, ensuring peak performance under stress:

• API 5L (Line Pipe): Available in Product Specification Levels 1 and 2 (PSL1 & PSL2), spanning from Grade B up to high-strength X70, X80, and X100, ASTM A53, EN 10217

Comprehensive Multi-Layer Coating Systems

To safeguard high-pressure assets against corrosion and environmental degradation, we provide professional external and internal coating applications:

• 3PE / 3PP (Three-Layer Polyethylene/Polypropylene): Provides premium mechanical protection and excellent moisture resistance for buried pipelines.
• FBE (Fusion Bonded Epoxy): Delivers superior anti-corrosive properties and strong adhesion.
• Internal Liquid Epoxy Lining: Smooths the inner surface to reduce friction loss, increase flow capacity, and resist internal chemical wear.

High-pressure applications leave zero room for error. Every LSAW pipe undergoes a rigorous sequence of non-destructive and mechanical testing protocols before dispatch:

• Hydrostatic Testing: Each pipe is pressurized to ensure absolute seam integrity under design load limits.
• 100% Ultrasonic Testing (UT) & Radiographic Testing (RT): Conducted along the entire length of the weld seam to detect any internal imperfections or micro-defects.
• Destructive Material Testing: Tensile, flattening, bending, and Charpy V-notch impact tests verify exact mechanical compliance.

Maximize your pipeline's lifespan and lower fluid transport friction with high-precision internal coatings. Contact our international sales division today to request technical material sheets, specify custom internal micron tolerances, or secure a competitive FOB or CIF quotation delivered directly to your port of destination.

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