carbon Seamless Steel Pipe thick wall big

Hot Expanded Seamless Steel Pipe – High-Quality Carbon Steel Tubes for Industrial Applications

Discover premium hot expanded seamless steel pipes, engineered through advanced thermal expansion techniques to deliver superior strength-to-weight ratios and precise dimensional control. These pipes are manufactured using a specialized process that increases diameter while reducing wall thickness—ideal for applications requiring large-diameter, thin-walled tubing at competitive costs. With a proven track record in global infrastructure, energy, and construction sectors, this product bridges the gap between standard pipe availability and custom engineering needs.

Key Features:

• Manufactured via hot expansion method — a thermomechanical process enhancing formability without compromising structural integrity
• Available in OD from 6" to 36" (DN15–DN900), with wall thicknesses ranging from 4mm to 40mm
• Complies with international standards including ASTM, API, EN, DIN, GB, and BS
• Customizable surface finishes such as black paint, anti-rust oil, galvanizing, or 3PE coating
• High production capacity of up to 30,000 metric tons per month ensures reliable supply chain performance

This innovative hot-expanded seamless carbon Steel Pipe is produced by first creating a hollow billet through rotary piercing or pressure perforation, followed by controlled thermal expansion to achieve desired dimensions. The result is a high-density, low-defect tube suitable for demanding environments where uniformity and durability matter most. Unlike traditional cold-rolled or welded alternatives, these pipes offer improved mechanical properties due to their seamless structure and optimized grain flow during heating and rolling stages.

Applications span across multiple industries including oil & gas transmission systems, industrial steam pipelines, HVAC networks, structural frameworks, and water conveyance projects. Whether used in low-to-medium pressure fluid transport or as load-bearing elements in heavy-duty construction, these tubes provide excellent corrosion resistance, weldability, and dimensional stability under varying environmental conditions.

Users report consistent performance in both temperate and extreme climates, with minimal maintenance required over extended service life. Many clients appreciate the flexibility in customization—especially for non-standard sizes that are difficult to source elsewhere—and commend the efficient delivery timelines following order confirmation.

Frequently Asked Questions:

What makes hot expanded seamless steel pipe different from regular seamless tubes? Answer: Hot expansion allows for precise diameter increase while maintaining wall thickness control—ideal for producing custom-sized thin-walled pipes efficiently without sacrificing quality or increasing cost significantly.

Can I request special coatings or surface treatments? Answer: Yes, options include black painting, varnish, rust inhibitors, hot-dip galvanizing, cold galvanizing, and multi-layer 3PE protection depending on your project requirements.

How long does it take to receive an order after deposit? Answer: Typically 20 working days from receipt of payment or irrevocable letter of credit at sight—ensuring timely delivery for critical infrastructure projects worldwide.

Is this product suitable for offshore or subsea use? Answer: While primarily designed for land-based applications, certain surface treatments like 3PE or galvanization make them viable for marine environments when properly specified and tested.

Product Categories : Steel Pipe > Seamless Steel Pipe