Hot Expanded
Seamless Steel Pipe – Premium Carbon Steel Tubing for Industrial & Infrastructure Projects This high-performance hot expanded seamless
Steel Pipe is engineered for modern industrial applications where precision, strength, and cost-efficiency are critical. Unlike traditional seamless tubes, this thermally enhanced carbon steel tubing undergoes a proprietary expansion process that increases outer diameter while reducing wall thickness—delivering customized thin-walled solutions without sacrificing structural integrity. Ideal for non-standard or large-diameter requirements, it bridges supply gaps in global infrastructure projects by offering superior dimensional control and material optimization. Key Features: - Available in sizes from DN6" to DN36" (OD 1/2" to 48") with wall thicknesses ranging from 4mm to 40mm - Compliant with international standards including ASTM A106, API 5L, EN 10217, DIN 2448, GB/T 8163, and BS 1387 - Monthly production capacity up to 30,000 metric tons, ensuring reliable supply chain support - Customizable surface treatments such as black paint, anti-rust oil, hot galvanizing, cold galvanizing, or 3PE coating for corrosion resistance - Lengths tailored to project needs, typically between 2 and 12 meters Manufactured using advanced rotary piercing or pressure perforation techniques, the raw billet is transformed into a seamless tube blank before undergoing controlled thermal expansion. This innovative method applies uniform heat and mechanical force simultaneously, resulting in precise diameter enlargement and consistent wall thinning. The outcome is a lightweight yet robust product ideal for medium-pressure systems where performance and efficiency matter most. With minimal waste and optimized raw material usage, this process supports sustainable manufacturing practices across energy, construction, and fluid transport industries. Common Applications: These pipes are widely adopted in oil and gas transmission pipelines, district heating networks, structural frameworks in heavy-duty buildings, coal gas distribution systems, and general-purpose fluid conveyance. Their ability to produce oversized, thin-walled configurations at lower costs makes them indispensable for projects requiring custom dimensions beyond standard pipe offerings—particularly in offshore platforms, long-distance pipeline installations, and modular construction environments. User Feedback Highlights: Customers consistently praise the reliability of these pipes in harsh conditions, especially in marine environments and remote pipeline networks where uniform wall thickness and corrosion protection are essential. Many users report smooth integration with existing piping systems, ease of welding and installation, and excellent value compared to conventional alternatives. Positive reviews often emphasize the consistency in quality across batches and the manufacturer’s responsiveness to customization requests. Frequently Asked Questions: What is the typical lead time after deposit? Approximately 20 days. Are certifications available? Yes—each batch includes test certificates confirming compliance with relevant international codes like API 5L Grade B or ASTM A106 Grade B. How does thermal expansion affect tensile strength? Depending on the alloy grade and post-treatment heat processing, tensile properties remain within acceptable ranges for most industrial uses; however, specific values should be verified based on the intended application. Can it meet pressure vessel standards? While primarily designed for low-to-medium pressure applications, certain grades can be certified for use in pressure vessels when properly heat-treated and tested per ASME BPVC Section I or II. Is there a minimum order quantity? No fixed MOQ—orders are flexible based on customer specifications and volume requirements. In summary, hot expanded seamless steel pipes represent a significant advancement in metallurgical engineering—a fusion of proven steelmaking methods with cutting-edge thermal processing. By enabling efficient production of large-diameter, thin-walled tubes, this technology empowers engineers and contractors worldwide to meet evolving project demands with greater flexibility, reduced costs, and improved sustainability.
Product Categories : Steel Pipe > Seamless Steel Pipe
