Hot Expanded
Seamless Steel Pipe – Premium Carbon Steel Tubing for Industrial & Infrastructure Projects Worldwide This high-performance hot expanded seamless
Steel Pipe is engineered for demanding industrial applications where precision, durability, and cost-efficiency are critical. Unlike traditional cold-drawn or rolled methods, this advanced manufacturing technique uses controlled thermal expansion to increase outer diameter while maintaining structural integrity—ideal for producing custom-sized, large-diameter thin-walled tubes that meet global engineering standards. The process begins with a pierced billet forming a hollow tube blank, followed by precise heating and mechanical stretching under optimized conditions. This ensures uniform wall thickness, minimal internal defects, and enhanced mechanical properties—making it a preferred choice for pipelines handling hazardous media, steam systems, and heavy-duty structural frameworks. Key Features: - Outer Diameter Range: 6" to 36" (DN15–DN900) – suitable for both small-scale and large infrastructure projects - Wall Thickness Options: 4mm to 40mm – flexible customization for pressure-rated and non-pressure applications - International Standards Compliance: ASTM A106, API 5L, EN 10216, DIN 2448, GB/T 8163, BS 1387 – trusted across oil & gas, power generation, and construction sectors - Length Customization: From 2 meters up to 12 meters – tailored to project-specific logistics and installation needs - Surface Protection Choices: Black painted, anti-rust oil, hot galvanized, cold galvanized, 3PE coating – adaptable to harsh outdoor environments and corrosive atmospheres - Monthly Production Capacity: Up to 30,000 metric tons – reliable supply chain support for global clients Manufactured using a proven thermal expansion method, these seamless carbon steel pipes offer superior dimensional accuracy and consistent performance compared to conventional processes. By leveraging elevated temperatures during deformation, the material exhibits improved ductility, reduced stress concentration, and fewer surface imperfections—key advantages in high-stakes installations such as offshore platforms, chemical transport systems, and utility distribution networks. The technology also enhances raw material utilization and lowers production costs without sacrificing quality, making it an economically smart choice for engineers seeking value-driven solutions. Ideal for use in oil and gas transmission lines, industrial steam piping, coal gas distribution systems, and structural supports in commercial buildings, this product delivers excellent weldability, corrosion resistance, and long-term reliability under varying temperature conditions. Whether deployed indoors or outdoors, from arctic climates to tropical regions, the pipes maintain their mechanical strength and integrity over time. Engineers globally appreciate how the thermal expansion process eliminates common issues like wall thinning inconsistencies and micro-cracks found in cold-formed alternatives. Users in Europe, North America, and Southeast Asia have consistently praised the product for its ability to fulfill unique design requirements while delivering competitive pricing and robust performance. Many cite the uniform wall thickness and low defect rate as essential factors when designing safe, efficient pipeline systems for transporting flammable or toxic substances. With options for multiple protective finishes—including multi-layer 3PE coatings—the pipes provide extended service life even in aggressive chemical or marine environments. Common Questions: What distinguishes hot expanded seamless steel pipe from cold-drawn seamless tubes? Answer: Hot expansion occurs at elevated temperatures, allowing better metal flow and reduced internal stresses. This results in improved tensile strength, fewer surface cracks, and higher consistency in wall thickness—critical for pipelines carrying pressurized fluids or gases. Can I request non-standard wall thicknesses within the specified range? Answer: Yes, the thermal expansion process supports customization between 4mm and 40mm, enabling tailored solutions for specialized applications such as offshore drilling risers, heavy-duty chemical transport, or high-temperature boiler systems. Is surface finish customizable for specific environmental conditions? Answer: Absolutely. Available treatments include black paint for UV protection, rust inhibitors for temporary storage, zinc coatings (hot or cold galvanizing) for moisture resistance, and 3PE (three-layer polyethylene) for long-term corrosion protection in aggressive soil or seawater environments. This innovative product bridges gaps in global supply chains by offering technically advanced, standardized yet flexible carbon steel tubing that meets international benchmarks. It’s not just a pipe—it’s a solution designed for modern infrastructure challenges, combining technical precision, economic efficiency, and compliance with global safety regulations. For engineers, contractors, and procurement managers worldwide, hot expanded seamless steel pipe represents a dependable asset for building resilient, future-ready systems across diverse industries—from energy and utilities to civil engineering and industrial manufacturing.
Product Categories : Steel Pipe > Seamless Steel Pipe
