ISO 3183 L245 Pipe
ISO 3183 L245 Pipe for Global Pipeline Transportation Systems – High Performance and Cost-Effective Solution
Hebei Longma Group manufactures ISO 3183 L245 Pipe with proven reliability for oil, gas, and water transmission projects worldwide. Our factory covers an area of 230,000 square meters, and the yearly output is over 1,000,000 tonnes, with more than 20 years of manufacturing experience since 2003. The product has a minimum yield strength of 245 MPa in outer diameters of 60.3 mm to 2032 mm and wall thickness of 4 mm to 100 mm. We manufacture to API 5L and ISO 3183 standards and can fully trace back from the raw materials supplied by the best Chinese steel mills such as Bao Steel, HBIS and Shougang. All pipe is subjected to extensive hydrostatic testing and non-destructive inspection before to shipment.
Understanding ISO 3183 L245 Pipeline Steel
ISO 3183 L245 is a globally recognised pipeline grade, created primarily for the transfer of hydrocarbons and fluids. The term 'L245' denotes that a minimum yield strength of 245 MPa is required for low to medium pressure applications.
This grade gives the best combination of mechanical strength and weldability. Controlled carbon content provides superior field fabrication performance without significant preheating operations.
L245 is a great choice for applications that need dependable performance, but don't need the added expense of higher-grade materials. It has a strict compliance with international specifications and it is cost-effective for big installations.
Technical Specifications and Material Properties
Our product meets precise dimensional and mechanical requirements for demanding pipeline applications:
| Parameter | Specification |
|---|---|
| Grade | L245 (equivalent to API 5L Grade B) |
| Outer Diameter | 60.3-2032mm (2"-80") |
| Wall Thickness | 4mm-100mm |
| Minimum Yield Strength | 245 MPa |
| Manufacturing Method | ERW / LSAW |
| PSL Options | PSL1 / PSL2 |
| Delivery Condition | As-Rolled, Normalizing Rolled, or Thermomechanical Rolled |
| Standard Compliance | ISO 3183, API 5L |
The controlled chemical composition ensures consistent weldability across production batches. Low carbon equivalent values facilitate field welding using standard GMAW or SAW techniques.
Each pipe undergoes dimensional inspection to verify tolerances. Wall thickness consistency remains within ±10-15% depending on diameter specifications, ensuring compatibility with standard connection systems.
Manufacturing Excellence with Advanced Production Technology
Longma Group operates both ERW and LSAW production lines to accommodate diverse project requirements. Our manufacturing process integrates advanced forming technology with rigorous quality checkpoints.
Raw materials undergo chemical composition verification before entering production. Plate selection from certified mills ensures baseline quality for all finished products.
Welding processes receive continuous monitoring through automated inspection systems. Heat treatment applications enhance weld zone properties when specifications require additional strength or toughness.
Hydrostatic testing validates pressure integrity for every pipe. Non-destructive testing methods including ultrasonic and radiographic examination detect any subsurface discontinuities before shipment.
Quality Assurance and International Certification
You obtain entire paperwork to support project compliance and regulatory approval. We are certified ISO9001, ISO14001 and ISO18001 and API 5L accredited in our quality management systems.
Mill Test Certificate with chemical analysis and results of mechanical testing are supplied with each shipment. Inspection and Test Plans are prepared as per project specific specifications provided by you at the time of placing order.
Traceability extends from steel coil identification through final pipe marking. Heat numbers enable tracking individual pipes back to original raw material batches.
Third-party inspection services can verify production at any stage. Our facility welcomes inspectors from international certification bodies and client representatives throughout manufacturing cycles.
Comprehensive Anti-Corrosion and Fabrication Services
Beyond standard pipe supply, we offer value-added processing for ISO 3183 L245 Pipe to reduce your on-site workload. Anti-corrosion coatings extend service life in challenging environmental conditions.
Available coating options include:
- Hot-dip galvanizing for atmospheric protection
- FBE coating for buried pipeline applications
- 3LPE coating systems for enhanced corrosion resistance
- 2PP coating for specific project requirements
Fabrication services address end preparation, beveling, and threading needs. Welding capabilities accommodate branch connections and custom configurations before delivery.
Expansion processing modifies pipe dimensions when installation conditions require non-standard sizes. Perforating services create drainage or distribution patterns according to your design specifications.
Global Supply Capability and Delivery Performance
We can manufacture 1,000,000+ tonnes a year, therefore we can meet your supply needs, whether urgent or planned. The fastest turnaround is 7 days from current inventory for standard specs.
Experience exporting to over 90 countries gives insight into international shipping needs. Documentation packages comprise commercial invoice, packing list, certificate of origin and shipping markings as per the destination requirements.
Logistics Coordination Loading of containers, vessel booking and freight transportation. Our shipping service proactively interacts with you on the progress of your production and expected departure dates.
Common sizes are held in buffer stock at the warehouse facilities. This inventory technique reduces waiting times when your project timing needs quick mobilisation.
FAQ
Q：What are the key differences between ISO 3183 L245 and other pipeline steel grades, and why should we select L245 for our project?
A：ISO 3183 L245 provides a minimum yield strength of 245 MPa, positioning it for low-to-medium pressure transportation systems. Higher grades like L290, L360, or L415 deliver increased strength but at elevated material costs. L245 offers superior weldability compared to higher-strength alternatives. Projects prioritizing fabrication ease and economic efficiency without extreme pressure demands find L245 ideally suited. Your selection should align with design pressure calculations and service conditions. When operating parameters fall within L245 capabilities, specifying higher grades unnecessarily increases project expenditure.
Q：How can you guarantee the quality and compliance of the products during production?
A：Our production control begins with certified raw material procurement from approved steel mills. Chemical composition verification occurs before manufacturing commencement. Manufacturing process controls include automated welding parameter monitoring and real-time dimensional measurement. Heat treatment applications follow documented procedures with temperature recording. Final inspection encompasses hydrostatic testing, non-destructive examination, and dimensional verification. Mill Test Certificates document all test results with specific values for chemical and mechanical properties. Weld seam quality receives particular attention through ultrasonic testing for LSAW pipes and continuous inspection for ERW production. Surface quality assessment identifies any coating defects or dimensional irregularities before acceptance.
Q：What information should we confirm before purchasing products from a supplier?
A：Specification clarity prevents misunderstandings during production. You should define outside diameter, wall thickness, pipe length, and PSL level (PSL1 or PSL2) in your inquiry. Manufacturing method selection between seamless, ERW, or LSAW affects production scheduling and pricing. Technical requirements including impact testing, specific NDT methods, and additional mechanical properties need clear communication. Coating and end preparation specifications should accompany your purchase order. Delivery timeline expectations help us schedule production within your project critical path. Previous supply references and quality documentation from similar projects demonstrate our consistent performance. Production capacity confirmation ensures we can meet your volume requirements within specified timeframes.
Contact Us
Ready to source reliable ISO 3183 L245 Pipe for your upcoming project? Request detailed quotations and technical documentation by contacting us at info@longma-group.com today.
