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Help CenterDIN 2448 St52.0 Carbon Steel Seamless Tube, 10-200mm OD, Heat Treated, 6m Length, Black Paint
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Hemaokang Steel (Shandong) Co., Ltd. is a trusted supplier of high-quality carbon steel seamless tubes, certified with ISO9001 and serving customers across North America, South America, Europe, Asia, Africa, and Oceania. Our DIN 2448 St52.0 Carbon Steel Seamless Tube is engineered to meet demanding industrial requirements, offering a perfect balance of strength, durability, and cost-effectiveness. With an annual export value of US$50-100 million and a dedicated team of 51-100 professionals, we ensure consistent quality and on-time delivery for every order.
This seamless tube is manufactured in accordance with DIN 2448 standard (now replaced by EN 10216-1, but still widely referenced), using high-grade St52.0 carbon steel. It undergoes a precise heat treatment process to enhance mechanical properties and relieve internal stresses, making it suitable for high-pressure and structural applications. The outer diameter ranges from 10 mm to 200 mm, with a standard length of 6 meters (custom lengths available). Each tube is coated with a black paint layer for corrosion protection during storage and transportation.
Key Features & Benefits:
- Superior Strength: St52.0 material offers a minimum yield strength of 355 MPa, ideal for load-bearing structures and machinery.
- Precise Dimensions: OD tolerance complies with DIN 2448, ensuring easy installation and compatibility with fittings.
- Heat Treated: Normalizing or quenching & tempering improves toughness and machinability.
- Rust Protection: Black paint coating provides temporary anti-corrosion protection; other coatings (e.g., varnish, galvanized) are available upon request.
- Customizable Options: Wall thickness, length (up to 12m), and end finish (plain, beveled, threaded) can be tailored to your project.
- Wide Applications: Used in construction, oil & gas pipelines, automotive parts, hydraulic cylinders, and general engineering.
| Standard | DIN 2448 |
| Material | St52.0 (1.0553) |
| Outer Diameter | 10 mm – 200 mm |
| Wall Thickness | 1.5 mm – 20 mm (customizable) |
| Length | 6 m (standard); others up to 12 m on request |
| Heat Treatment | Normalized or Quenched & Tempered (optional) |
| Surface Finish | Black paint (other finishes available) |
| Certification | ISO9001:2015 |
Technical Specifications: The St52.0 grade ensures excellent weldability and formability. After heat treatment, the tube achieves a tensile strength of 490-630 MPa and elongation of min. 22%. Each batch is tested for chemical composition and mechanical properties to guarantee consistency.
Why Choose Hemaokang Steel?
- Established in 2025, we have rapidly built a strong reputation in the global market.
- Annual export value of US$50-100 million demonstrates our capacity and reliability.
- Our team of 51-100 experienced employees ensures strict quality control from raw material to shipment.
- We serve all major markets worldwide, including North America, Europe, Southeast Asia, Africa, and Oceania.
- ISO9001 certified management system guarantees consistent product quality.
Contact us today for a competitive quotation or technical consultation. We are ready to support your projects with high-quality DIN 2448 St52.0 seamless tubes and flexible customization options.
Frequently Asked Questions (FAQ)
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Q: What is the equivalent grade of St52.0 in other standards?
A: St52.0 is similar to EN 10216-1 P355N, ASTM A106 Grade B (for seamless carbon steel), and Chinese GB/T 8163 Q345D. Always check specific mechanical properties for your application. -
Q: Can I get a different wall thickness not listed?
A: Yes, wall thickness can be customized within our production capabilities. Please provide your required thickness and we will confirm availability. -
Q: What is the standard heat treatment? Is it mandatory?
A: The heat treatment (normalizing) is standard for most applications to improve toughness. If you need quenched & tempered or no heat treatment, please specify. -
Q: How is the tube packaged for shipment?
A: Tubes are bundled with steel straps, wrapped in waterproof plastic, and protected with wooden ends or crates for sea freight. Custom packaging is available. -
Q: What is the minimum order quantity (MOQ)?
A: For standard sizes (OD 10-200mm, 6m length), MOQ is typically 1 ton. For non-standard sizes, MOQ may be higher. Contact us for details. -
Q: Do you provide third-party inspection or certificates?
A: Yes, we can arrange third-party inspection (e.g., SGS, BV) at buyer's cost. Mill test certificates are provided free of charge. -
Q: What is the lead time for a typical order?
A: For standard sizes and quantities, lead time is 15-25 days after deposit. Larger or customized orders may require 30-45 days. -
Q: Can I get a sample before placing a bulk order?
A: Yes, samples are available. The sample cost and shipping fee can be negotiated, and we may deduct the sample cost from your first bulk order.
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