API 5L X52 ERW (Electric Resistance Welded) Steel Line Pipe is a high-performance carbon steel pipeline solution designed specifically for the transportation of oil, natural gas, water, and other fluids in demanding industrial environments.
Products Description
|
Product |
API 5L X52 ERW Steel Line Pipe |
| Process | Electrical Resistance Welding |
| Production Stardard | API 5L PSL1, PSL2 |
| Grade | B, X42, X46, X52, X56, X60, X65, X70 |
| Size Range | OD 1/2"–24"(21.3–610mm), Thickness 0.055"–1.602"(1.65–26.97mm) |
| Pipe Length | 5.8m, 6m,12m,as requirement |
| Pipe Ends | Plain, Bevel, Threading and coupling, Grooved |
| Surface Treatment | bare, black paint, anti-rust oil,galvanized , FBE, Epoxy,3PE , 3PP |
| Application | oil , gas, water transportations, industries, Structure. Piling |
Material Grade: API 5L X52
1. Material Grade & Mechanical Properties
Grade: API 5L X52 (Equivalent to ISO 3183 L360)
Minimum Yield Strength: 360 MPa (52,000 psi)
Tensile Strength: Minimum 460 MPa (66,700 psi)
Product Specification Level (PSL): Available in PSL1 and PSL2.
PSL1: Standard requirements for chemical composition and mechanical properties.
PSL2: Enhanced requirements including stricter chemical controls (lower Carbon Equivalent), mandatory impact testing (Charpy V-Notch), and non-destructive testing (NDT) of the weld seam and body.
2. Chemical Composition
The steel used for X52 ERW pipes is carefully controlled to ensure weldability and toughness. Key elements include low carbon content for improved formability, along with manganese, silicon, and micro-alloying elements such as niobium, vanadium, or titanium to enhance strength through precipitation hardening. Sulfur and phosphorus levels are strictly minimized to prevent brittleness and improve resistance to sour service environments when required.
HFW / ERW manufacturing
ERW technology utilizes high-frequency electrical current to heat the edges of steel strips to a welding temperature, followed by pressure application to forge a solid-state bond without the use of filler metal. This process results in a narrow heat-affected zone and a uniform weld seam, ensuring consistent structural integrity along the entire length of the pipe. Compared to traditional submerged arc welding, ERW offers superior dimensional accuracy, smoother internal and external surfaces, and enhanced efficiency for diameters typically ranging from 1/2 inch to 24 inches.
Performance Advantages
High Strength-to-Weight Ratio: The X52 grade provides sufficient strength for medium-distance transmission lines while allowing for optimized wall thickness, reducing material costs and installation weight.
Excellent Weldability: The low carbon equivalent and clean microstructure of ERW pipes facilitate easy field welding, reducing construction time and labor costs.
Uniform Quality: The continuous manufacturing process ensures consistent mechanical properties and dimensional precision throughout the pipe length.
Corrosion Resistance Compatibility: The smooth surface finish of ERW pipes makes them ideal candidates for various external coatings (such as 3LPE, 3LPP, FBE) and internal linings (epoxy), significantly extending service life in corrosive environments.
Certifications
Quality Assurance
* Hydrostatic Pressure Test
* Non-Destructive Test (Eddy Current, Ultrasonic)
* Chemical composition test
* Mechanical Property Test
* Dimension & Visual Inspection
* Full Traceability (Mill Test Certificates 3.1 from raw material to finished pipes)
* Accept third party inspection before shipment
Applications
API 5L X52 ERW line pipes are widely utilized in:
Oil & Gas Transmission: Onshore gathering lines, distribution networks, and mid-pressure transmission pipelines.
Water Infrastructure: Large-scale water supply projects and wastewater treatment facilities.
Structural Applications: Due to their high strength and uniformity, they are also employed in structural piling and scaffolding.
Emerging Energy Sectors: Suitable for hydrogen blending pipelines and carbon capture, utilization, and storage (CCUS) infrastructure, particularly when specified with appropriate sour service ratings (e.g., X52MS).
Welcome to inquire
Kevin
Tianjin shenzhoutong steel pipe co.,ltd
kevin@tjshenzhoutong.com
Mob/whatsapp/wechat +86 15267768016
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