High-strength Welded Pipe For Diverse Infrastructure
Saw pipe delivers high-strength, corrosion-resistant solutions for oil, gas, water, construction, petrochemical, and abrasive material transport.
High-strength Welded Pipe For Diverse Infrastructure
Saw pipe delivers high-strength, corrosion-resistant solutions for oil, gas, water, construction, petrochemical, and abrasive material transport.
SAW Pipe (Submerged Arc Welded Pipe) refers to pipes manufactured using submerged arc welding, encompassing both Longitudinal Submerged Arc Welded (LSAW) and Spiral Submerged Arc Welded (SSAW) pipes. Renowned for their strength, durability, and corrosion resistance, SAW pipes are ideal for oil and gas pipelines, water transmission, structural construction, petrochemical industries, piling, and abrasive material transport, meeting standards like API 5L, ASTM A671, and GB/T3091-2008.
The SAW process involves welding steel plates or coils under a flux layer, ensuring high-quality welds with minimal defects. LSAW pipes are formed longitudinally (via processes like JCOE or UOE), while SSAW pipes are spirally welded, offering flexibility for larger diameters. Available in diameters from 8 to 100 inches (219–2540 mm) and wall thicknesses from 5.0 to 40.0 mm, SAW pipes cater to diverse project needs.
SAW pipes undergo rigorous testing, including ultrasonic, hydrostatic, and X-ray inspections, to ensure weld integrity and compliance. Protective coatings like 3LPE or FBE enhance corrosion-resistant SAW pipe performance in harsh environments, such as offshore pipelines or chemical processing. Their versatility supports both high-pressure fluid transport and structural applications.
Compared to ERW pipes, SAW pipes offer superior weld quality and strength, making them suitable for large-diameter, high-pressure applications. Their ability to handle diverse materials and conditions makes them a preferred choice for critical infrastructure projects worldwide.
SAW pipes address challenges like corrosion, high pressure, and structural demands, providing engineers with reliable large-diameter SAW pipe solutions for oil, gas, water, construction, and petrochemical applications, ensuring safety and longevity.
SAW Pipe Manufacturing Process
Submerged Arc Welded (SAW) pipes are manufactured using metal fillers and conductive flux, ensuring strong welds for large-diameter, high-pressure applications.
SAW pipes are produced by forming steel coils into a cylindrical shape, with the seam welded using submerged arc welding. A conductive flux, which becomes electrically conductive when heated, shields the weld area, covering sparks and fumes. A copper-coated filler wire (up to 6mm thick) is fed into the open seam at a controlled speed, melted by the current conducted through the flux, and used to fuse the steel edges together.
The seam can be welded from the outside, inside, or both, with double-sided welding resulting in Double Submerged Arc Welded (DSAW) pipes. The process ensures robust, corrosion-resistant welds, meeting standards like API 5L, ASTM A671, and GB/T3091-2008. SAW pipes, suitable for oil and gas pipelines, water supply, and construction, undergo rigorous testing (e.g., ultrasonic, hydrostatic) to ensure weld integrity and durability.
SAW pipes, including DSAW variants, deliver high-strength, reliable welds, making them ideal for critical infrastructure projects in demanding environments.
| Grade | C (% max) | Si (% max) | Mn (% max) | P (% max) | S (% max) | Cr (% max) |
|---|---|---|---|---|---|---|
| API 5L Grade B | 0.28 | 0.45 | 1.20 | 0.03 | 0.03 | - |
| Q345 | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 0.30 |
| ASTM A671 CC60 | 0.21 | 0.13-0.45 | 0.55-1.30 | 0.035 | 0.035 | - |
The chemical composition ensures weldability, strength, and corrosion resistance for SAW pipe in demanding applications.
| Grade | Tensile Strength (MPa min) | Yield Strength (MPa min) | Elongation (% min) |
|---|---|---|---|
| API 5L Grade B | 415 | 245 | 23 |
| Q345 | 470 | 345 | 21 |
| ASTM A671 CC60 | 415 | 220 | 25 |
These properties ensure SAW pipes provide robust performance in high-pressure and structural applications.
| Feature | LSAW Pipe | SSAW Pipe | ERW Pipe |
|---|---|---|---|
| Welding Process | Longitudinal SAW | Spiral SAW | Electric Resistance |
| Diameter Range | 16–72 inches | 20–100 inches | 1/8–24 inches |
| Wall Thickness | 6.0–40.0 mm | 5.0–25.4 mm | 1.5–20 mm |
| Applications | Oil/gas, construction, water, petrochemical | Water, low-pressure systems, piling | Water, gas, low-pressure |
| Weld Quality | High (Double-Sided SAW) | Moderate (Spiral Weld) | Moderate |
| Cost | Moderate to High | Low to Moderate | Low |
Why Choose SAW Pipes? Their high weld quality and versatility make them ideal for oil, gas, water, construction, petrochemical, and abrasive material applications compared to ERW pipes.
Submerged arc welding ensures strong, defect-free joints.
Available from 8 to 100 inches for diverse project needs.
3LPE or FBE coatings protect against harsh environments.
Handles high-pressure and structural demands effectively.
Ensures accurate sizing and straightness for reliable performance.
Meets API 5L, ASTM A671, and GB/T3091-2008 standards.
SAW pipes in stock
Submerged Arc Welded (SAW) pipes are manufactured in a wide range of sizes and grades, tailored to meet diverse industrial standards and customer requirements.
SAW pipes are available with an outer diameter of 219–3200 mm, wall thickness of 5–30 mm, and lengths up to 12,000 mm + 500 mm. They comply with standards such as ASTM A252-89, API SPEC 5L, GB/T9711.1, and SY/T5037, using materials like Q235-Q345, L175-L485, SS400, 16Mn, and L290-L360, or customized per customer needs. Specific tolerances, mechanical, and chemical properties can be tailored on request.
Protective coatings, including HDPE, 3PE, 3PP, and pipe cement mortar lining, enhance corrosion resistance for applications in oil and gas, water transport, and construction. Quality is ensured through Mill Test Certificates (EN 10204/3.1B) and third-party inspections by SGS, BV, or Lloyds, guaranteeing reliable performance in demanding environments.
In addition to above specification, the pipes can be produced according to customer’s requirements.
SAW pipes offer versatile sizing and robust quality, making them ideal for critical infrastructure projects requiring durability and customization.
Explore LSAW pipes with targeted long-tail keywords for specifications, applications, and materials.
Note: LSAW pipes meet international standards, ensuring high performance and reliability. Contact suppliers for detailed specifications.
SAW Pipes are engineered for high strength, durability, and corrosion resistance, making them ideal for oil and gas pipelines, water transmission, structural construction, petrochemical transport, piling, and abrasive material conveyance, ensuring reliable performance in critical infrastructure projects.
Transports crude oil, natural gas, and hydrocarbons over long distances with superior weld quality.
Facilitates potable water, wastewater, and irrigation systems in urban and industrial settings.
Provides structural support for high-rise buildings, bridges, and offshore platforms.
Ensures safe transport of chemicals and petrochemical products in processing facilities.
Used as piling pipes for stable foundations in construction and offshore projects.
Transports abrasive materials in industrial applications with high durability.
Why Choose SAW Pipes? Their high strength, corrosion resistance, and versatility make SAW pipes ideal for oil, gas, water, construction, petrochemical, and abrasive material applications, ensuring reliable performance.
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