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Help CenterAPI 5L X52 Carbon Steel Seamless Pipe 8-24 Inch OD With Mill Test Report
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Hemaokang Steel (Shandong) Co., Ltd. is a trusted supplier of high-quality API 5L X52 Carbon Steel Seamless Pipes, with outer diameters ranging from 8 to 24 inches. As a manufacturer with an annual export value between US$50 million and US$100 million, we ensure that every pipe meets stringent industry standards and is accompanied by a complete Mill Test Report (MTR). Our commitment to quality and reliability makes us a preferred partner for oil and gas pipeline projects worldwide.
This seamless pipe is designed for critical applications requiring high strength and resistance to pressure. The API 5L X52 grade offers excellent yield strength and weldability, making it ideal for transportation of oil, gas, water, and other fluids. Each pipe undergoes rigorous testing to guarantee dimensional accuracy, mechanical properties, and chemical composition compliance.
Key Features & Technical Specifications
- Material Grade: API 5L X52 (L360) – Minimum yield strength 52,000 psi (360 MPa).
- Size Range: Outer diameter 8 to 24 inches (customizable within this range).
- Wall Thickness Options: Schedule 40, 80, 160, XXS, or as per customer requirements.
- Length: Random lengths (5.8–12 meters) or fixed lengths (available upon request).
- Ends: Beveled ends for welding or plain ends for threading.
- Surface Treatment: Black painting, anti-corrosion coating, or bare finish.
- Testing: Hydrostatic test, tensile test, flattening test, and chemical analysis included in MTR.
- Certification: ISO9001:2025 quality management system.
| Property | API 5L X52 Requirement | Typical Value |
| Yield Strength (min) | 52,000 psi (360 MPa) | 55,000 – 60,000 psi |
| Tensile Strength (min) | 66,000 psi (455 MPa) | 70,000 – 80,000 psi |
| Carbon Content (max) | 0.26% | 0.22% – 0.25% |
| Manganese Content | 1.40% max | 1.10% – 1.30% |
| Phosphorus (max) | 0.030% | 0.020% – 0.025% |
| Sulfur (max) | 0.030% | 0.010% – 0.020% |
Product Advantages for Your Business:
- High Strength & Durability: X52 grade ensures reliable performance under high pressure and harsh environments.
- Seamless Construction: No welded seams, reducing the risk of leaks and failures in critical applications.
- Full Traceability: Each pipe comes with a Mill Test Report documenting chemical composition, mechanical properties, and heat number.
- Flexible Customization: We can adjust wall thickness, length, end finish, and coating to meet specific project requirements.
- Cost-Effective Transportation: Our central location in Liaocheng, Shandong, offers easy access to ports, ensuring timely delivery and competitive logistics.
Why Choose Hemaokang Steel?
Established in 2025, Hemaokang Steel (Shandong) Co., Ltd. has quickly become a reliable supplier in the global steel market. With a dedicated team of 51–100 employees and an annual export value exceeding US$50 million, we have the capacity and expertise to handle large-scale orders. Our products are exported to North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and more. We are ISO9001 certified, ensuring that every pipe is manufactured under strict quality control procedures.
Our API 5L X52 seamless pipes are independently tested and verified. We provide comprehensive Mill Test Reports that allow you to verify compliance with project specifications. By choosing Hemaokang, you benefit from competitive pricing, reliable supply, and professional after-sales support. Whether you need a small batch for a maintenance project or a full pipeline order, we are ready to serve.
Contact us today to discuss your requirements and request a quotation. Let Hemaokang Steel be your trusted partner for high-quality carbon steel seamless pipes.
Frequently Asked Questions (FAQ)
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Q: What wall thicknesses are available for 8-24 inch API 5L X52 seamless pipes?
A: We offer standard schedules like Sch40, Sch80, Sch160, and XXS, as well as custom wall thicknesses per your engineering drawings. Please specify your requirements. -
Q: Can you provide the Mill Test Report for each pipe?
A: Yes, every pipe shipment includes a Mill Test Report that documents chemical composition, mechanical properties, heat treatment, and hydrostatic test results. -
Q: What is the typical length of these pipes?
A: Standard random lengths are 5.8m to 12m. Fixed lengths (e.g., 6m, 12m) are available upon request with a minimum order quantity. -
Q: Do you offer surface coating or anti-corrosion treatment?
A: Yes, we can apply black painting, varnish, or 3LPE coating as needed. Please advise your coating requirements during order placement. -
Q: What is the minimum order quantity (MOQ) for 8-24 inch seamless pipes?
A: MOQ depends on the specific size and wall thickness. Typically, for standard sizes, we accept orders starting from 10 tons. For custom dimensions, please contact our sales team. -
Q: How long does delivery take?
A: For standard sizes, delivery is usually 15–30 days after order confirmation, depending on quantity. Larger orders or custom specifications may require 30–45 days. -
Q: Are these pipes suitable for high-pressure gas transmission?
A: Yes, API 5L X52 is designed for medium-pressure oil and gas pipelines. The seamless construction and strict testing ensure safe operation under designed pressure. Always consult your engineering team for specific pressure ratings. -
Q: Do you ship to international ports?
A: Absolutely. We export to major ports worldwide, including North America, South America, Europe, Middle East, Africa, and Asia. We can arrange FOB, CIF, or CFR terms based on your preference.
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