API 5L LSAW Steel Line Pipe
API 5L LSAW Steel Line Pipe is a high-performance welded pipe manufactured by rolling steel plates and welding the longitudinal seam using Double Submerged Arc Welding process. It is a key product line specified under the API 5L standard, primarily designed for the transportation of fluids in the oil and gas industry.
Products Description
Product | API 5L LSAW Steel Line Pipe |
Standard | API 5L PSL1, PSL2 |
Grade | B, X42, X46, X52, X56, X60, X65, X70 |
Manufacturing method | Longitudinal Submerged Arc Welding, JCOE forming |
Range | OD 406~1620mm, Thickness 8~50mm |
Coating | Bare, black painting, FBE, Epoxy , 3LPE,3LPP... |
Ends | Bevel or Plain or Groove |
Applications | Oil/Gas/Water piping line, Stucture, Piling... |
manufacturing process
Key Features
* Cost-effectiveness: Compared to seamless pipes, LSAW production is more economical, especially for large diameters.
* Large Diameter and Thick Wall: LSAW pipes are typically produced in large diameters (common range: 406.4mm to 1620 mm, with maximum lengths up to 12.2m) and with thick walls (e.g., 8mm to 50mm), making them suitable for high-pressure applications.
*High Strength and Durability: The Double Submerged Arc Welding is welded both inside and outside, the seam is a little thicker than pipe body ,It has higher strength performance than other kinds of welding (like ERW)
*Uniform Stress Distribution: The straight longitudinal weld provides a more uniform stress distribution compared to spiral welds.
*Ease of Handling and Installation: Their dimensions and welded construction facilitate transportation and on-site installation.
Surface Coatings
To enhance durability in various environments, LSAW pipes can be supplied with protective coatings.
Common options include Black painting, Fusion Bonded Epoxy (FBE), 3-layer Polyethylene (3PE), 3-layer Polypropylene (3PP)
coal tar epoxy, and bitumen coating.
Applications
LSAW pipes are predominantly used in constructing large-diameter, thick-walled pipelines for long-distance oil and gas transmission.
According to API standards, they are the designated pipe type for critical pipeline sections passing through harsh environments, including high-altitude cold regions, subsea areas, and densely populated urban zones
quality control
The LSAW steel line pipe undergoes strict quality control per Standard requirements
* Hydrostatic Pressure Testing
* Non-Destructive Testing (X-Ray, Ultrasonic)
* Chemical composition test
* Mechanical Property Testing
* Dimension & Visual Inspection
* Full Traceability (Mill Test Certificates 3.1 provided)
why us
* High quality assured & Fast delivery.
* Rich experiences(23 years) in Technics/Production/Post-sales.
* Technical & full set of documents support (API 5L, ISO, MTC, ITP &MPS .etc)
shipment
