LSAW Steel Pipe Supplier – API 5L LSAW Pipe from China Youfa
LSAW Steel Pipe Supplier – API 5L LSAW Pipe from China Youfa
LSAW
FOB, CIF
10tons
2000tons
Tianjin, China
30Day
LSAW steel pipe is a longitudinal submerged arc welded pipe widely specified for high‑pressure and large‑diameter pipeline projects. Known for its excellent straightness, stable mechanical performance, and strong pressure resistance, LSAW pipe is commonly selected for oil & gas transmission, water pipelines, and critical infrastructure applications where quality consistency is essential.
Quantity
What is LSAW Steel Pipe
LSAW steel pipe is a longitudinal submerged arc welded pipe widely specified for high‑pressure and large‑diameter pipeline projects. Known for its excellent straightness, stable mechanical performance, and strong pressure resistance, LSAW pipe is commonly selected for oil & gas transmission, water pipelines, and critical infrastructure applications where quality consistency is essential.
Tianjin Youfa Steel Pipe Group supplies a full range of LSAW steel pipe solutions through carefully selected production resources, supporting global projects with stable quality and reliable delivery.
How Is LSAW Steel Pipe Manufactured?
LSAW steel pipe is produced by forming steel plates into a cylindrical shape and welding them longitudinally using submerged arc welding technology. Depending on project requirements, forming methods such as JCOE or UOE may be applied to ensure dimensional accuracy and structural stability.
Compared with spiral welded pipes, LSAW pipe offers improved straightness, higher pressure‑bearing capability, and more uniform weld performance. These advantages make API 5L LSAW pipe a preferred option for long‑distance and high‑pressure pipeline systems.
What Production Processes Are Used for LSAW Pipe?
The typical production process for LSAW steel pipe includes:
- Steel plate inspection and edge milling
- Plate forming by JCOE or UOE process
- Longitudinal submerged arc welding (SAW)
- Ultrasonic and X‑ray non‑destructive testing
- Mechanical expansion and dimensional correction
- Hydrostatic testing and final inspection
Each step is designed to ensure weld integrity, dimensional precision, and compliance with API 5L LSAW pipe requirements.
LSAW Steel Pipe Specification
| Outside Diameter | 406 - 1422MM |
| Thickness | 6.0 - 50.0MM (Tolerance ± 10-12%) |
| Length | 6M - 12M |
| Standard | API 5L, ASTM A53, ASTM A252 |
| Steel Grade | Grade B, Grade C, X42, X52 |
| Pipe Ends | Plain end/ Bevel end; Threaded on two ends, one end with coupling, one end with plastic cap |
| Pipe Surface | Natural Black or Painted Black or 3PE Coated |
What Are the Specifications and Standards of LSAW Steel Pipe?
We supply LSAW steel pipe in accordance with major international standards, covering pipeline, and structural applications.
LSAW Weld Pipe Products Range – JCOE Production Line
- Outside Diameter: 20"–56"
- Wall Thickness: 8–50 mm
- Steel Grade Max.: X80
- Standard: API Spec 5L with Annex H
- Alloy Standard: ASTM A671 / A672 / A691
- Structure Standard: EN 10219 / ASTM A252
JCOE LSAW Production Line
- Outside Diameter: 16"–40"
- Wall Thickness: 6–25 mm
- Steel Grade Max.: X70
- Standard: API Spec 5L with Annex H & J
- Alloy Standard: ASTM A671 / A672 / A691
- Structure Standard: EN 10219 / ASTM A252
Coating Production Line
- Outside Diameter: 16"–56"
- Wall Thickness: 6–50 mm
- Steel Grade Max.: X80
- Coating Standards:
- 3LPE DIN 30670 / CSA Z245.21
- 3LPP DIN 30678 / ISO 21809
- FBE CSA Z245.20 / DEP 31.40.30.32
What Are LSAW Steel Pipes Used For?
LSAW steel pipe is widely used in applications that require high reliability and long‑term performance, including:
- Oil and gas transmission pipelines using API 5L LSAW pipe
- Water supply and drainage systems requiring large‑diameter LSAW pipe
- Offshore and onshore pipeline projects
- Structural and piling applications
- Large‑scale infrastructure construction
As a reliable China LSAW pipe supplier, Youfa supports diverse engineering projects with flexible sourcing and specification options.
How Is Quality Controlled for LSAW Steel Pipe?
At Youfa, it is our responsibility to provide customers with stable, safe, and reliable LSAW steel pipe products. To achieve this, we implement full traceability quality control from raw material sourcing to finished product delivery. Our facilities include a national CNAS laboratory equipped with advanced testing methods to ensure every LSAW pipe meets national standards and customer requirements.
We enforce strict quality control at every stage of production, following the nine “100% controls” principle:
- Raw Materials – 100% recheck of physical and chemical properties
- Steel Plates – 100% ultrasonic flaw detection
- Steel Pipes – 100% hydrostatic testing
- Welding Seams – 100% ultrasonic flaw detection and 100% X-ray inspection
- Steel Pipe & Welding Seams – 100% physical and chemical testing
- Pipe Size – 100% dimensional inspection
- Pipe Appearance – 100% visual inspection for surface quality
- Pipe Packaging – 100% inspection to ensure secure and compliant packaging
This rigorous approach ensures that every LSAW steel pipe supplied by Youfa is reliable, high-quality, and ready for demanding pipeline projects.
Why Choose Youfa as Your China LSAW Pipe Supplier?
With strong supply integration capabilities and extensive project experience, Tianjin Youfa Steel Pipe Group provides dependable LSAW steel pipe solutions for international customers.
- 15 production bases across China
- Over 300 production lines
- Annual production capacity of 20 million tons
- Mature quality control and inspection systems
- Stable export supply for global pipeline projects
As an experienced China LSAW line pipe factory and supplier, Youfa is committed to delivering consistent quality, flexible specifications, and reliable support for your pipeline projects.
