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Help CenterSeamless Carbon Steel Pipe With 1 Year Warranty and Standard Compliant 20 Inch
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Hemaokang Steel (Shandong) Co., Ltd., established in 2025 with an annual export value of US$50-100 million, proudly presents our premium Seamless Carbon Steel Pipe with 1 Year Warranty and Standard Compliant 20 Inch. As a trusted manufacturer and exporter based in Liaocheng, Shandong, China, we deliver high-quality steel pipes that meet rigorous international standards, backed by ISO9001 certification. Our seamless carbon steel pipes are designed for durability, reliability, and performance in demanding applications, ensuring your projects stay on schedule and within budget.
Our 20-inch seamless carbon steel pipe is manufactured using advanced hot-rolling or cold-drawing processes, resulting in a uniform structure without any welded seams. This eliminates weak points, offering superior strength and pressure resistance. The pipe is fully compliant with standards such as ASTM A106, A53, and API 5L, making it suitable for oil and gas transmission, structural support, and industrial piping systems. Each pipe undergoes strict quality control and is tested for chemical composition, mechanical properties, and dimensional accuracy.
Key Features & Benefits
- Seamless Construction: No weld joints mean higher reliability and reduced risk of leakage under high pressure or temperature.
- Standard Compliance: Manufactured to meet ASTM, API, and other international standards, ensuring consistent quality and easy integration with existing systems.
- 1-Year Warranty: We stand behind our product quality with a full year of warranty coverage, giving you peace of mind.
- Wide Range of Applications: Ideal for oil & gas pipelines, water supply networks, boiler tubes, and structural components.
- Customizable Options: Available in various wall thicknesses, lengths, and surface treatments (black, galvanized, anti-corrosion coating) to meet specific project requirements.
- Excellent Mechanical Properties: High tensile strength, good ductility, and impact resistance suitable for harsh environments.
Technical Specifications (Typical Parameters)
| Parameter | Value |
|---|---|
| Outer Diameter | 20 inches (508 mm) |
| Wall Thickness | SCH 20, SCH 40, SCH 80, or custom (6.35 mm - 25.4 mm) |
| Length | 6 meters (20 ft) or 12 meters (40 ft) or as required |
| Material Grade | ASTM A106 Gr.B, A53 Gr.B, API 5L Gr.B/X42/X52 |
| Tensile Strength | ≥ 415 MPa (60,000 psi) |
| Yield Strength | ≥ 240 MPa (35,000 psi) |
| Elongation | ≥ 20% (in 2 inches) |
| Ends | Plain ends, beveled ends, or threaded (as per request) |
Why Choose Hemaokang Steel?
- ISO9001 Certified: Our production process is quality-managed, ensuring consistent product excellence.
- Experienced Workforce: With 51-100 skilled employees, we maintain efficient manufacturing and strict quality control.
- Global Reach: We export to North America, South America, Europe, Africa, Oceania, Middle East, and Asia, handling volumes up to US$100 million annually.
- Flexible Shipping: All orders are shipped from Qingdao port, with options for FCL, LCL, or breakbulk.
- Customer Support: Our team provides after-sales service, technical guidance, and prompt responses to inquiries.
We understand that reliable steel pipes are critical for your infrastructure. That's why we offer a 1-year warranty on every 20-inch seamless carbon steel pipe, covering defects in material and workmanship. Our standard compliant pipes are tested thoroughly, including hydrostatic testing, ultrasonic testing, and dimensional checks. Whether you need pipes for a cross-country pipeline, a power plant, or a construction project, Hemaokang Steel delivers the quality you can trust.
Frequently Asked Questions
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Q: What is the difference between seamless and welded pipe?
A: Seamless pipe is manufactured without any welding seam, offering higher strength and pressure resistance. It is ideal for high-pressure and high-temperature applications where weld integrity is critical. -
Q: Can you provide custom wall thicknesses?
A: Yes, we offer customizable wall thicknesses according to your project specifications. Please contact us with your requirements. -
Q: Is the pipe suitable for sour service (H2S)?
A: Standard carbon steel pipes may not be suitable for sour service without special treatment. For H2S applications, we recommend consulting our technical team for appropriate material grades (e.g., API 5L NACE compliance). -
Q: What is the warranty coverage?
A: Our 1-year warranty covers manufacturing defects. We will replace or repair any pipe that fails under normal use within one year from shipment. -
Q: Do you provide test certificates?
A: Yes, we provide mill test certificates (MTC) with chemical and mechanical test results. Additional third-party inspection is available upon request. -
Q: How long does delivery take?
A: Typical lead time is 15-30 days after order confirmation, depending on quantity and customization. Urgent orders can be accommodated with prior arrangement. -
Q: What payment terms do you accept?
A: We accept T/T (telegraphic transfer), L/C (letter of credit), and other terms negotiable for large orders. -
Q: Can I get samples before bulk order?
A: Yes, sample orders are welcome. We can provide a small quantity for evaluation, with freight costs covered by the buyer.
With over US$50 million in annual exports and a strong presence in global markets, Hemaokang Steel (Shandong) Co., Ltd. is your dependable partner for seamless carbon steel pipes. Our 20-inch standard compliant pipe, backed by ISO9001 certification and a 1-year warranty, offers the reliability and performance your project demands. Contact us today to place your order or request a quote. Let us help you build with confidence.
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