API 5L X80 carbon welded steel pipe

High-Performance API 5L ERW Line Pipes & CRGO Silicon Steel Solutions.‌ ‌API 5L ERW Line Pipes: Precision Manufacturing for Oil & Gas Pipelines.‌ Engineered for high-pressure transmission of oil, gas, and hydrocarbons, our API 5L ERW (Electric Resistance Welded) pipes comply with strict dimensional tolerances and material standards. These pipes are ideal for cross-country pipelines, offshore rigs, and refinery networks requiring ‌Grade X42 to X80‌ yield strength (up to 80,000 psi).
We offer API 5L X80 carbon welded steel pipe and related grades with 100% factory direct pricing and free quotes available within 6 hours.

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Product Introduction

High-Performance API 5L ERW Line Pipes & CRGO Silicon Steel Solutions.‌

‌API 5L ERW Line Pipes: Precision Manufacturing for Oil & Gas Pipelines.‌

Engineered for high-pressure transmission of oil, gas, and hydrocarbons, our API 5L ERW (Electric Resistance Welded) pipes comply with strict dimensional tolerances and material standards. These pipes are ideal for cross-country pipelines, offshore rigs, and refinery networks requiring ‌Grade X42 to X80‌ yield strength (up to 80,000 psi).

‌Dimensional Tolerances & Compliance‌

‌Outer Diameter (mm)‌ ‌Pipe End Tolerance‌ ‌Wall Thickness Tolerance‌ ‌Standard‌
219.1–273.1 +1.6mm / -0.4mm ±0.75% API 5L PSL2
274–610 +2.4mm / -0.8mm ±0.75% API 5L PSL2
508–610 (X42–X80) +19.5% / -8% ISO 3183

‌Key Features‌:

  • ‌Material Grades‌: X42, X52, X60, X65, X70, X80
  • ‌Pressure Rating‌: 8.6–25.8 MPa (1,250–3,750 psi)
  • ‌Coating Options‌: 3LPE, FBE, or dual-layer epoxy for corrosion resistance

‌CRGO Silicon Steel: Ultra-Efficient Transformer Core Material‌

Cold Rolled Grain Oriented (CRGO) Silicon Steel minimizes energy loss in electrical transformers, achieving ‌core losses as low as 0.85 W/kg‌ at 1.5 Tesla. Its Goss texture {110}<001> alignment ensures 98% magnetic flux efficiency.

‌Technical Specifications‌

‌Parameter‌ ‌CRGO Value‌ ‌Testing Standard‌
Thickness 0.23mm, 0.27mm, 0.30mm IEC 60404-8
Core Loss (W/kg @1.5T) 0.85–1.20 Epstein Frame (IEC 60404-2)
Permeability (μmax) 1,800–2,000 ASTM A912
Surface Insulation 3–5 μm MgO coating Resistance >20 Ω·cm²

‌Applications‌:

  • ‌Power Transformers‌: 50/60 Hz grid distribution
  • ‌High-Frequency Reactors‌: Up to 1 kHz operations
  • ‌Renewable Energy Systems‌: Solar/wind farm step-up transformers

‌API 5L Pipe Manufacturing Process‌

  1. ‌Coil Preparation‌: Hot-rolled steel coils (SAW/AH36) slit to 219–610mm widths.
  2. ‌ERW Welding‌: High-frequency induction welding at 1,250–1,400°C.
  3. ‌Sizing & Straightening‌: OD calibrated to ±0.75% via 6-roll cold forming.
  4. ‌Hydrostatic Testing‌: 90% SMYS (Specified Minimum Yield Strength) pressure for 10 sec.
  5. ‌Nondestructive Testing‌: Ultrasonic (UT) and electromagnetic (ET) flaw detection.

‌CRGO Silicon Steel Production Workflow‌

  1. ‌Hot Rolling‌: Slabs heated to 1,100°C and rolled to 2.3mm thickness.
  2. ‌Cold Rolling‌: Reduced to 0.30mm with 85% deformation for grain orientation.
  3. ‌Decarburization‌: Annealed in wet H₂/N₂ at 820°C (carbon content ≤0.005%).
  4. ‌Final Coating‌: Tension-coated with MgO for interlaminar insulation.

‌Competitive Advantages‌

‌Product‌ ‌MOQ‌ ‌Certifications‌ ‌Lead Time‌
API 5L ERW Pipes 20 tons API 5L/ISO 3183/CE/PED 30–45 days
CRGO Silicon Steel 5 tons IEC 60404/Mil-S-11595/ROHS 45–60 days

‌Why Choose Us?‌

  • ‌API 5L Pipes‌: Seamless/flawless welds with 100% UT/RT inspection.
  • ‌CRGO Steel‌: Laser-scribed domains reduce hysteresis loss by 18%.

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Supplier of various types of carbon steel

Luo Kaiwei Steel Company is a comprehensive steel supplier that produces a variety of carbon steel plates, carbon steel pipes, galvanized steel, carbon steel coils, and steel profiles.

Luo Kaiwei Steel Company is a multi-ISO certified steel manufacturer specializing in carbon steel plates, pipes and galvanized coils since 2010. Competitive prices and ASTM/JIS compliant. Get instant quotes for bulk orders and global shipping support.

Tel: +86 15635685959

E-mail: [email protected]  

WhatsApp: +86 18912200505

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