ISO 3183 L290 Pipe
ISO 3183 L290 Pipe for Oil & Gas Pipeline Systems – Reliable Medium-Strength Solution for Long-Distance Transmission
Hebei Longma Group manufactures high-quality ISO 3183 L290 Pipe designed for medium-pressure oil and gas transmission projects worldwide. With a minimum yield strength of 290 MPa and tensile strength of 415 MPa, our L290 pipes deliver superior load-bearing capacity for demanding pipeline applications. Backed by over 20 years of manufacturing expertise since 2003, our production facility spans 230,000 square meters with an annual capacity exceeding 1,000,000 tons. We offer pipe specifications ranging from 60.3mm to 2032mm in outer diameter and 4mm to 100mm in wall thickness, with delivery as fast as 7 days for urgent projects.
What Makes ISO 3183 L290 Pipe Ideal for Pipeline Transportation
L290 grade steel pipe represents an optimal choice for medium-pressure transmission systems. The material specification ensures consistent mechanical properties while maintaining excellent weldability for efficient field installation.
Your pipeline projects benefit from controlled chemical composition with carbon content typically capped at 0.22% for seamless pipes and 0.20% for welded variants. This careful balance optimizes the Carbon Equivalent, ensuring smooth welding operations without pre-heating in most conditions.
The pipe demonstrates remarkable versatility across various delivery conditions. Whether you need As-rolled (AR), Normalizing Rolled (N), or Thermomechanical Rolled (M) processing, each treatment provides a fine grain structure that enhances toughness and reliability in service.
Technical Specifications You Can Rely On
| Parameter | Specification |
|---|---|
| Grade | L290 |
| Minimum Yield Strength | 290 MPa |
| Minimum Tensile Strength | 415 MPa (60,200 psi) |
| Outer Diameter Range | 60.3-2032mm (2"-80") |
| Wall Thickness | 4mm-100mm |
| Manufacturing Process | ERW & LSAW |
| Product Standard Level | PSL1 & PSL2 available |
| Carbon Content | ≤0.22% (seamless), ≤0.20% (welded) for PSL2 |
| Delivery Condition | AR, N, M, Q&T |
| Fastest Delivery | 7 days |
Superior Manufacturing Process for Consistent Quality
Longma Group employs advanced LSAW and ERW manufacturing technologies to produce ISO 3183 L290 Pipe that meets international project standards. Our production process includes rigorous heat treatment procedures that optimize weld seam performance.
Each pipe undergoes comprehensive quality inspection throughout manufacturing. We utilize professional NDT equipment to detect potential defects before products leave our facility. Hydrostatic testing verifies pressure integrity, while mechanical testing confirms yield strength, tensile strength, and elongation meet specification requirements.
Raw materials sourced from reputable mills including Shagang, TISCO, and Bao Steel ensure stable baseline quality. Complete traceability from steel plate to finished pipe provides confidence throughout your procurement process.
Quality Certifications and Compliance Documentation
Our manufacturing plant has important certifications including API 5L Certificate, ISO9001 Quality Management System, ISO 14001 Environmental Management and ISO 18001 Occupational Health and Safety certifications. These certificates are evidence of our ongoing quality control.
For every order, we provide complete technical documentation packages. Mill Test Certificates according to EN 10204 3.1 include chemical composition analysis, mechanical test results, and dimensional inspection reports. Third-party inspection by agencies such as BV, TUV, or Intertek can be arranged based on your project requirements.
Value-Added Services That Simplify Your Project Execution
Beyond pipe manufacturing, we offer comprehensive fabrication services including welding, perforating, expansion processing, and specialized end treatments to match your connection requirements. These capabilities reduce your need to coordinate multiple suppliers.
Anti-corrosion protection extends pipe service life in challenging environments. Choose from hot-dip galvanizing, FBE coating, 2PP coating, 3LPE coating, or 3PE coating based on your operating conditions. Our integrated approach streamlines your supply chain while ensuring compatibility between pipe body and protective layers.
Applications Across Multiple Industry Sectors
ISO 3183 L290 Pipe serves diverse pipeline transportation needs globally. Oil and gas companies specify L290 for gathering lines and transmission systems where medium pressure ratings provide adequate safety margins without excessive material costs.
Water transmission projects benefit from the grade's corrosion resistance when combined with appropriate protective coatings. Infrastructure developers appreciate the balance between mechanical strength and weldability for efficient installation schedules.
The material's compliance with international standards makes it suitable for projects requiring cross-border procurement. Engineering contractors working on EPC assignments find our complete documentation support facilitates smooth approval processes.
Understanding PSL1 vs PSL2 Requirements
Product Specification Level selection impacts testing requirements and quality assurance protocols. PSL1 represents standard quality suitable for many general applications, offering reliable performance with fundamental inspection procedures.
PSL2 introduces enhanced requirements including mandatory Charpy V-notch impact testing, stricter chemical composition limits, and more rigorous non-destructive examination. Critical applications such as sour service environments benefit from PSL2's additional quality controls. For H2S-containing media, supplementary requirements per ISO 3183 Annex H address HIC and SSC resistance.
Your project specifications should clearly define which PSL level applies. We recommend discussing operating conditions with our technical team to ensure appropriate material selection.
FAQ
Q：How does ISO 3183 L290 compare to API 5L X42 grade?
A：These grades are technically equivalent in strength specifications. ISO 3183 follows international metric standards while API 5L represents American Petroleum Institute standards. Many modern mills including Longma Group dual-certify products to both standards, giving you flexibility in project specifications. The 290 MPa yield strength threshold applies to both designations.
Q：What quality documents should I request when ordering L290 pipes?
A：Always request a Mill Test Certificate according to EN 10204 3.1 showing chemical composition, mechanical properties including yield and tensile strength, elongation values, hydrostatic test records, and NDT reports. Dimensional inspection records verify diameter and wall thickness tolerances. For PSL2 orders, impact test results at specified temperatures should be included. Heat number traceability allows you to track materials throughout the supply chain.
Q：Does L290 require pre-heating before welding?
A：The relatively low carbon equivalent of the product provides excellent weldability in most conditions. Pre-heating requirements depend on wall thickness, ambient temperature, and your welding procedure specifications. Thinner walls typically weld without pre-heating, while heavier wall sections may benefit from pre-heating in cold weather. Your certified welding procedures should specify any pre-heat requirements based on actual conditions.
Q：Can L290 pipe be used in sour service environments?
A：Yes, when manufactured to ISO 3183 Annex H supplementary requirements addressing sour service. This involves additional testing for Hydrogen-Induced Cracking resistance and Sulfide Stress Cracking resistance. Standard L290 production does not automatically include sour service qualification. Specify Annex H requirements in your purchase order if your application involves H2S-containing fluids.
Q：What delivery conditions are available for L290?
A：Common delivery conditions include 'N' (Normalized or Normalizing Formed) and 'M' (Thermomechanical Rolled), both providing fine grain structures for enhanced toughness. As-rolled (AR) condition suits applications where standard mechanical properties suffice. Quenched and Tempered (Q&T) treatment can be specified for applications requiring optimized strength-toughness combinations. Your selection should align with operating temperature ranges and mechanical property requirements.
Contact Us
Ready to discuss your ISO 3183 L290 Pipe requirements? Contact our technical team at info@longma-group.com for detailed quotations, specification clarification, or to arrange mill inspections. We're committed to supporting your project success with quality products and responsive service.
