S235JR LSAW Longitudinal Submerged Arc Welded Steel Pipe
Product Introduction of Large-Diameter Welded Pipes
LSAW (Large-Diameter Submerged Arc Welding) is a type of large-diameter steel pipe. It is made by pre-bending hot-rolled steel plates or coils into open pipes, and then fusing them into a straight weld seam through internal and external double-sided submerged arc welding (SAW). Its core process involves using a flux layer to melt the welding wire and base material under a burning electric arc, thereby achieving high-quality welding. Finally, it is manufactured through forming and other expansion processes, and is specifically designed for high-pressure, long-distance transportation pipelines for fluids such as oil and natural gas.
Key Parameters for SSAW Pipe
|
Parameter |
Details |
|
Steel Grade |
S235JR |
|
Outer Diameter (OD) |
406mm - 1626mm (16" - 64") |
|
Wall Thickness (WT) |
6.0mm - 75mm (typically up to 50mm ) |
|
Length |
6m - 12.5m (commonly 12m SRL/DRL) |
|
Pipe Ends |
Beveled End (BE) as per ANSI B16.25, Plain End (PE) |
|
Surface Treatment |
Bare, Black painting, Varnish, Anti-rust oil, 3PE, FBE, Epoxy coating, Concrete Weight Coating (CWC) |
Core Application Areas of LSAW Steel Pipes
LSAW steel pipes (LSAW) possess excellent pressure resistance, deformation resistance, and long service life, making them the preferred material for demanding engineering projects. Major application areas include:
Energy Transmission Backbone Networks:
Onshore and Offshore Oil and Gas Pipelines: Transporting high-pressure crude oil, natural gas, and refined oil products; suitable for long-distance pipelines thousands of kilometers long (e.g., the West-East Gas Pipeline Project).
Technical Support: Wall thickness up to 40mm and above; pressure rating X80 or higher (yield strength ≥555MPa).
Mining and Industrial Transportation:
High Abrasion-Resistant Slurry Pipelines: Transporting abrasive slurries (solid-liquid mixtures) such as ores and tailings; resistant to particle erosion corrosion.
Process Piping Systems: Suitable for high-temperature and high-pressure environments such as refinery cracking units and chemical plant reactors, meeting the demand for thick-walled (>25mm) pipes.
Large-Scale Infrastructure:
Marine Engineering: Offshore platform jackets, monopile wind turbine foundations (diameter up to 10 meters); resistant to seawater corrosion and wave impact.
Building Structures: Used for the pile foundations of cross-sea bridges and the core tubes of super high-rise buildings, providing extremely high axial load-bearing capacity (e.g., the steel pipe composite piles of the Hong Kong-Zhuhai-Macau Bridge).
Water Conservancy and Public Works: Major Water Supply Networks: Pressure pipelines for large-scale water supply projects (e.g., the South-to-North Water Diversion Project), with food-grade anti-corrosion treatment on the inner walls.
Foundation Pile Foundations: Anti-sinking piles used in wharves, deep-water ports, etc., capable of penetrating complex geological layers.
About us
We are a professional international welded pipe trader, with S235JR series welded pipes as our core export product. Leveraging a comprehensive supply chain system and a global logistics network, we provide clients with end-to-end services from procurement to logistics, ensuring that all types of welded pipes accurately match project requirements and arrive on time.
Hot Tags: s235jr lsaw longitudinal submerged arc welded steel pipe, China s235jr lsaw longitudinal submerged arc welded steel pipe manufacturers, suppliers, EN10208, Welded steel pipes for low pressure fluid transportation, Q345B Straight Seam Welded Pipe, Big Diameter LSAW Steel Pipe, Straight Seam Welded Pipe, A252 Welded Pipe Piles
You Might Also Like
Send Inquiry