Lsaw Carbon Steel Pipe
Grade:Gr.B to X80, ASTM A36, S235JR, S355JR/J0/J2
Outer Diameter:16" to 60" or customized
Wall Thickness: 6.0mm – 60mm or customized
Length: 6m to 12.5m or customized
Welding Process: Double-sided Submerged Arc Welding (Automatic)
Surface Treatment: Bare, Black Paint, 3PE, FBE, Epoxy Lining, Concrete Coating
End Finish:Beveled Ends (BPE) or Plain Ends (PE)
- Free Samples
- Quality Assurance
- 24/7 Customer Service
Product Introduction
LSAW Carbon Steel Pipe - Heavy-Wall High-Pressure Pipeline Solutions
Lsaw Carbon Steel Pipe Manufacturer
Hebei Jinsheng Pipe Fitting Manufacturing Co., Ltd. conveys proficient lsaw carbon steel pipe arrangements with over 40 a long time of fabricating skill. Our LSAW channels highlight NPS 16" to 60" breadth extend, utilizing programmed submerged circular segment welding with 100% X-ray review to guarantee prevalent weld astuteness. With yearly deals surpassing RMB 100 million and month to month shipments over 50 holders, we give heavy-wall keenness arrangements for high-pressure gas transmission frameworks worldwide.
LSAW Carbon Steel Pipe Overview
Our longitudinally welded carbon steel channels are designed for requesting high-pressure applications. Each pipe experiences exactness fabricating utilizing progressed longitudinal submerged circular segment welding innovation. The single straight crease plan combined with cold extension handle conveys remarkable dimensional exactness and auxiliary unwavering quality. These channels serve as the spine for basic framework ventures requiring most extreme security and execution standards.

Key Features & Advantages
Superior Weld Astuteness: Programmed submerged circular segment welding innovation makes welds as solid as the base metal itself. Each crease gets 100% radiographic testing to ensure auxiliary soundness.
Precision Dimensional Control: Cold extension handle guarantees precise external breadth estimations, encouraging consistent field establishment and association alignment.
Enhanced Security Profile: Single longitudinal crease plan diminishes potential disappointment focuses compared to winding welded options, making it perfect for high-pressure combustible gas applications.
Stress Help Properties: Fabricating prepare minimizes remaining stretch, amplifying benefit life and keeping up basic astuteness beneath requesting working conditions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Diameter Range | NPS 16" to 60" |
| Wall Thickness | 6mm - 50mm |
| Length | 6m, 12m, or custom |
| Welding Method | Longitudinal Submerged Arc Welding |
| Inspection | 100% X-ray Testing |
| End Preparation | Plain End, Beveled End |
Standards & Certifications
Our lsaw carbon steel pipe production strictly follows international standards:
- API 5L - Line Pipe Specifications
- ASTM A53 - Standard Specification for Pipe
- ASTM A252 - Welded and Seamless Steel Pipe Piles
- ISO 9001 Quality Management System
- CE Marking for European markets
- GOST-R certification for Russian markets




Chemical Composition & Mechanical Properties
| Grade | C (%) | Mn (%) | P (%) | S (%) | Yield Strength (MPa) | Tensile Strength (MPa) |
|---|---|---|---|---|---|---|
| Gr.B | ≤0.26 | ≤1.20 | ≤0.030 | ≤0.030 | ≥241 | ≥414 |
| X42 | ≤0.26 | ≤1.30 | ≤0.030 | ≤0.030 | ≥290 | ≥414 |
| X52 | ≤0.26 | ≤1.40 | ≤0.030 | ≤0.030 | ≥359 | ≥455 |
| X60 | ≤0.26 | ≤1.40 | ≤0.030 | ≤0.030 | ≥414 | ≥517 |
Manufacturing Process
Our longitudinal welded pipes take after a exact six-step fabricating arrangement. Steel plates experience cautious review some time recently shaping into round and hollow shape. The longitudinal crease gets programmed submerged circular segment welding beneath controlled parameters. Cold extension handle takes after to accomplish exact measurements and push alleviation. Each pipe experiences hydrostatic weight testing and total dimensional confirmation some time recently last inspection.
Surface Finish & Coating Options
Standard Finishes:
- Black (as-welded condition)
- Shot impacted to Sa2.5 standard
- Pickled and oiled surface
Protective Coatings:
- 3LPE (Three Layer Polyethylene)
- FBE (Fusion Bonded Epoxy)
- Liquid epoxy coating
- Zinc-rich groundwork systems
Applications
High-pressure gas transmission pipelines advantage altogether from our longitudinal welded development. Oil and gas gathering frameworks depend on the basic keenness these channels give. Water transmission ventures utilize the cost-effective huge distance across capabilities. Auxiliary applications counting bridge development and establishment heaping use the predominant roundness and dimensional precision. Mechanical handle channeling frameworks select these channels for their unwavering quality and execution consistency.
Packaging & Delivery
Pipes get defensive conclusion caps and bundling with steel strapping. Wooden dunnage anticipates harm amid transportation. Holder stacking takes after worldwide shipping measures with appropriate weight dissemination. Send out documentation incorporates process test certificates, review reports, and shipping shows. Conveyance timeframes ordinarily extend from 15-30 days depending on arrange determinations and amount requirements.
Customization Service
We oblige particular venture prerequisites through adaptable fabricating capabilities. Custom divider thickness, length details, and uncommon review materials are accessible upon ask. Building back helps with fabric determination and detail improvement. Specialized meeting makes a difference optimize pipe choice for your particular application requirements.

Quality Control
Every lsaw carbon steel pipe experiences comprehensive review conventions. Chemical composition confirmation employments progressed spectrometer examination. Mechanical property testing affirms quality and ductility prerequisites. Dimensional review guarantees compliance with indicated resiliences. Non-destructive testing counting radiographic and ultrasonic assessment ensures weld astuteness. Last weight testing approves basic soundness some time recently shipment.
FAQ
Q: Why choose LSAW over SSAW for high-pressure gas lines?
A: LSAW features a single straight seam and undergoes cold expansion, improving dimensional accuracy while reducing residual stress. This makes it significantly safer for high-pressure combustible gas applications compared to spiral welded alternatives.
Q: What inspection methods verify weld quality?
A: We perform 100% X-ray inspection on all longitudinal seams, ensuring every weld meets or exceeds base metal strength requirements.
Q: Can you provide custom specifications?
A: Yes, we manufacture pipes according to your specific requirements including special grades, dimensions, and testing protocols.
Contact Us
Ready to discuss your lsaw carbon steel pipe project requirements? Contact our technical team at admin@jsfittings.com for expert consultation and competitive pricing on your next order.
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