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API 5L X42 ERW Carbon Steel Pipe 1/2 Inch Wall Thickness 4.0mm for Oil and Gas

API 5L X42 ERW Carbon Steel Pipe 1/2 Inch Wall Thickness 4.0mm for Oil and Gas photo-1
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API 5L X42 ERW Carbon Steel Pipe 1/2 Inch Wall Thickness 4.0mm for Oil and Gas photo-3
API 5L X42 ERW Carbon Steel Pipe 1/2 Inch Wall Thickness 4.0mm for Oil and Gas photo-4
API 5L X42 ERW Carbon Steel Pipe 1/2 Inch Wall Thickness 4.0mm for Oil and Gas photo-5

Product Spotlights

API 5L X42 ERW carbon steel pipe with 1/2 inch OD and 4.0mm wall thickness. High strength (290 MPa yield), precise ERW welding, ISO9001 certified. Suitable for oil and gas pipelines, gathering lines, and structural applications. Custom lengths, beveled ends, and third-party inspection available. Competitive pricing from a reliable exporter with $50M+ annual export value.
Negotiable MOQ: 1 Ton (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Carbon Steel
Surface Treatment:
Other, Black Painted / Bare / Oiled
Standard:
API 5L
Payment & Shipping
Payment Methods:
Port of Shipment:
Qingdao Port
Delivery Detail:
7 days
Material Carbon Steel
Surface Treatment Other, Black Painted / Bare / Oiled
Standard API 5L
Grade X42
Outer Diameter 1/2 inch (21.3 mm)
Wall Thickness 4.0 mm
Length 6m / 12m or Customized
Welding Type ERW (Electric Resistance Welded)
Application Oil and Gas Transmission
End Type Plain End / Beveled End

Hemaokang Steel (Shandong) Co., Ltd. is a professional manufacturer and exporter of carbon steel pipes, established in 2025 with an annual export value of US$50-100 million. Our API 5L X42 ERW Carbon Steel Pipe with 1/2 inch outer diameter and 4.0mm wall thickness is specifically engineered for the demanding oil and gas industry. This pipe combines high-strength X42 grade material with precise ERW welding technology, ensuring reliable performance in pipelines, transmission lines, and structural applications. With a dedicated team of 51-100 employees and ISO9001 certification, we deliver consistent quality that meets international standards.

Our ERW pipe is manufactured using advanced high-frequency induction welding, resulting in a uniform weld seam with excellent mechanical properties. The X42 grade offers a minimum yield strength of 290 MPa (42,000 psi) and a tensile strength of 415 MPa (60,200 psi), providing the strength-to-weight ratio required for medium-pressure oil and gas systems. The 4.0mm wall thickness ensures enhanced durability and resistance to deformation under load, while the 1/2 inch outer diameter (21.3mm) is ideal for small-diameter pipelines, gathering lines, and gas distribution networks.

Key Features & Benefits

  • Compliance with API 5L Standard: Manufactured in accordance with API 5L specification, suitable for both seamless and welded pipe applications in oil and gas.
  • High Strength X42 Grade: Yield strength of 290 MPa ensures reliable performance under pressure and temperature variations.
  • ERW Welding Process: Electric resistance welding provides a clean, strong, and defect-free weld seam, reducing the risk of leaks.
  • Precise Dimensional Tolerances: Outer diameter tolerance of ±0.5% and wall thickness tolerance of ±12.5%, ensuring compatibility with fittings and valves.
  • Excellent Weldability: Carbon content ≤0.22% facilitates easy field welding and fabrication.
  • Corrosion Resistance Options: Available with black paint, bare finish, or oiled surface to protect against environmental factors.
  • Length Customization: Standard lengths of 6m or 12m, with random lengths available upon request.
  • Hydrostatic Testing: Each pipe is hydrostatically tested to 100% of specified yield strength, ensuring integrity.

Technical Specifications

Standard API 5L
Grade X42 (PSL1/PSL2 optional)
Outer Diameter 1/2 inch (21.3 mm)
Wall Thickness 4.0 mm
Length 6m / 12m (custom length available)
Yield Strength (min) 290 MPa (42,000 psi)
Tensile Strength (min) 415 MPa (60,200 psi)
Carbon Content (max) 0.22%
Manganese Content (max) 1.25%
Phosphorus + Sulfur (max) 0.045%
End Type Plain End / Beveled End (30° + 1°)

The API 5L X42 ERW pipe is subjected to rigorous quality control, including visual inspection, dimensional checks, and non-destructive testing (NDT) such as ultrasonic or eddy current testing. This ensures that every pipe delivered meets the stringent requirements of the oil and gas industry. The 4.0mm wall thickness provides a robust solution for applications where higher pressure ratings are needed compared to standard schedule 40 pipes.

Applications

  • Oil and gas gathering lines and transmission pipelines
  • Natural gas distribution networks
  • Refinery and petrochemical plant piping
  • Structural support in offshore and onshore installations
  • Water injection and flow lines

Why choose Hemaokang Steel? We are a Shandong-based manufacturer with ISO9001:2015 quality management system certification. Our annual export volume of US$50-100 million demonstrates our reliability and global reach. We serve markets across North America, South America, Europe, Asia, Africa, and Oceania. With 51-100 highly skilled employees, we ensure on-time delivery and competitive pricing. Each order is backed by professional after-sales service and technical support.

We invite you to experience the quality difference. Contact us today for a quote or technical consultation. Our API 5L X42 ERW pipes are available in stock for quick shipment, and we can also arrange custom lengths and coatings. Trust Hemaokang Steel for your next oil and gas pipeline project.

Frequently Asked Questions

  1. What is the difference between API 5L X42 and X52? X42 has a minimum yield strength of 290 MPa (42,000 psi), while X52 has 360 MPa (52,000 psi). X42 is suitable for medium-pressure applications, while X52 is used for higher pressure requirements.
  2. Is this pipe suitable for sour gas service (H2S)? The standard API 5L X42 PSL1 is not specifically designed for sour service. For sour gas environments, we recommend PSL2 grade with additional hardness control and HIC testing. Contact our technical team for recommendations.
  3. What are the available end finishes? We offer plain end (PE) and beveled end (BE) options. Beveled end is recommended for welding to ensure proper penetration.
  4. Can you provide third-party inspection? Yes, we can arrange third-party inspection by SGS, BV, or other accredited agencies. The cost will be quoted upon request.
  5. What is the standard packaging for export? Pipes are bundled with steel strapping, wrapped in waterproof material, and loaded into containers or break-bulk shipments. Each bundle is marked with grade, size, and heat number.
  6. What is the minimum order quantity (MOQ)? Our MOQ for this size is typically 5 tons for standard lengths. For smaller quantities, please inquire with our sales team.
  7. Do you offer mill test certificates (MTC)? Yes, each shipment includes a mill test certificate per EN 10204 Type 3.1, showing chemical composition and mechanical properties.
  8. How long is the delivery time? For standard sizes in stock, delivery is within 7-15 days after order confirmation. For custom orders, lead time is 20-30 days.

* All information is provided for reference. For precise specifications and certifications, please contact Hemaokang Steel for detailed documentation.

Product Tags: API 5L X42 ERW Carbon Steel Pipe , 1/2 Inch Carbon Steel Pipe Oil and Gas , ERW Welded Steel Pipe 4.0mm Wall Thickness

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Gold Verified Supplier
1Yr
Verified Business License
Year Established
2025
Annual Export Value
US$50 Million - US$100 Million
Total Employees
51 - 100 People
Product Certifications
ISO9001