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Hemaokang Steel (Shandong) Co., Ltd. proudly presents our premium 304 Stainless Steel Pipe ASTM A312 2B Surface Finish 6 Meter Length Seamless, designed specifically for demanding oil and gas pipeline applications. Leveraging our ISO9001-certified quality management system and extensive global export experience (annual export value US$50–100 million), we ensure every pipe meets rigorous industry standards. Our seamless construction and 2B surface finish deliver superior corrosion resistance, dimensional accuracy, and long-term reliability, making this product a trusted choice for energy infrastructure projects worldwide.
This seamless pipe is manufactured from high-grade 304 stainless steel, offering excellent weldability and formability while maintaining structural integrity under high pressure and temperature fluctuations. The ASTM A312 standard guarantees consistent mechanical properties and chemical composition, essential for hydrocarbon transport and processing. The 2B surface finish, achieved through cold rolling and light annealing, provides a smooth, non-porous surface that reduces friction and resists scaling, ensuring efficient flow and minimal maintenance.
- Seamless Manufacturing: No welded seams eliminate weak points, enhancing pressure capacity and fatigue resistance.
- Standardized Length: 6-meter fixed lengths simplify installation, reduce waste, and facilitate precise project planning.
- Versatile Application: Suitable for oil, gas, steam, and chemical processing pipelines, both above and below ground.
- Customizable Dimensions: Outer diameter from 1/2" to 24" and wall thickness from Schedule 10S to XXS available upon request.
- Corrosion Resistance: 304 stainless steel offers excellent resistance to oxidation and many corrosive media, extending service life.
| Parameter | Specification |
|---|---|
| Grade | 304 (UNS S30400) |
| Standard | ASTM A312 / ASME SA312 |
| Surface Finish | 2B (cold rolled, annealed, pickled) |
| Length | 6 meters (19.7 feet) – fixed or custom |
| Manufacturing Process | Seamless (hot formed + cold drawn) |
| Tensile Strength | ≥ 515 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 35% |
Our pipes undergo rigorous quality checks including hydrostatic testing, ultrasonic examination, and dimensional inspection to ensure compliance with ASTM A312. The 2B finish not only enhances aesthetic appearance but also facilitates easy cleaning and inspection, critical for hygienic and high-purity applications in oil, gas, and petrochemical sectors. The seamless construction provides uniform wall thickness and superior pressure retention, reducing the risk of leaks and failures in high-stress environments.
With over 51–100 dedicated employees and a state-of-the-art production facility in Liaocheng, Shandong, Hemaokang Steel has achieved an annual export value of US$50 million to US$100 million since our establishment in 2025. Our ISO9001 certification reflects our commitment to quality, and our global reach covers North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and more. We offer flexible packaging (plywood cases, bundles, or loose loading) and reliable delivery schedules to meet your project timelines. Contact us today for competitive pricing, technical support, and customized solutions for your oil and gas pipeline requirements.
Frequently Asked Questions
- What is the chemical composition of 304 stainless steel? 304 contains approximately 18–20% chromium and 8–10.5% nickel, with low carbon content (≤0.08%). This provides excellent corrosion resistance and formability.
- Can this pipe be used for high-pressure gas applications? Yes, the seamless construction and ASTM A312 compliance ensure it can withstand pressures up to the specified schedule. We recommend selecting the appropriate wall thickness based on your operating pressure and temperature.
- Is the 2B surface finish suitable for welding? Yes, the 2B finish is smooth and clean, allowing for easy welding. However, for optimum weld quality, we advise removing any surface oxides near the weld zone before welding.
- Do you offer custom lengths or diameters? Yes, we can customize outer diameter from 1/2" to 24" and wall thickness per Schedule 10S to XXS. Lengths other than 6 meters are available upon request with minimum order quantities.
- What packaging options are available? Standard packaging includes plywood cases, steel bundles, or bulk loose loading. For sea freight, we use anti-corrosion wrapping and proper securing to prevent damage.
- How long is the delivery time? For standard sizes and quantities, delivery is typically 15–30 days after order confirmation. Custom orders may take 30–45 days depending on complexity.
- Does this pipe meet international standards for oil and gas? Yes, it complies with ASTM A312, which is widely accepted in the oil and gas industry. We also provide inspection certificates, mill test reports, and third-party testing upon request.
- What is the minimum order quantity? The minimum order quantity for standard sizes is 1 ton. For customized dimensions, please contact our sales team for specific requirements.
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