Explore the premium STBA26 alloy steel tubes, engineered to meet stringent international standards such as JIS G3462 for boiler and heat exchanger applications. These seamless, hot-rolled or cold-finished tubes are manufactured by Fushun Metal LTD, a trusted global supplier of specialty steels since 1998. Designed for high-pressure environments in chemical, petrochemical, and power generation industries, STBA26 offers superior thermal conductivity, mechanical strength, and long-term durability under extreme conditions.

Key Features: - Material Composition: Carbon-based alloy with chromium (8–10%) and molybdenum (0.9–1.1%) for enhanced creep resistance and oxidation protection at elevated temperatures. - Dimensions: Available from 10mm to 200mm outer diameter, wall thickness ranging from 1mm to 20mm, with customizable lengths up to 7 meters or more. - Surface Finish Options: Black varnish coating, PE coating, or bare finish—ideal for corrosion prevention in harsh industrial settings. - Manufacturing Methods: Seamless (S), Hot Finished (H), Cold Finished (C) – ensuring precise dimensional control and surface integrity. - U-Bend Capability: Cold-bent tubes with minimum bending radius of 1.5×OD; no heat treatment required unless specified by client. - Compliance: Fully compliant with JIS G3462 specifications for boiler tubes, superheater tubes, condenser tubes, and catalyst tubes used in heat exchange systems.

These alloy steel tubing solutions are ideal for critical components like water tubes, smoke tubes, air preheaters, and condensers where consistent performance and safety are non-negotiable. The manufacturing process includes rigorous quality checks—chemical analysis, tensile testing, hydrostatic pressure tests, and non-destructive evaluation—to ensure each tube meets international engineering standards. With production capacity exceeding 30,000 tons annually, Fushun Metal delivers reliable supply chains for global clients seeking durable, high-performance materials.

Applications span across power plants, refineries, chemical processing units, and petrochemical facilities worldwide. Whether you're designing a new boiler system or replacing aging equipment, STBA26 provides the necessary resilience against thermal stress, fatigue, and corrosive media. Its unique combination of alloy elements ensures excellent weldability, machinability, and resistance to high-temperature oxidation—making it an optimal choice over standard carbon steel tubes in demanding operational scenarios.

Users praise these tubes for their consistency in both physical properties and surface finish. Many report reduced maintenance costs due to fewer leaks and less degradation over time compared to alternative materials. Engineers particularly appreciate the tight tolerances on diameter (+/-0.1mm for cold-finished versions) and wall thickness (+20/-0%), which simplifies installation and enhances system efficiency.

Frequently asked questions include whether STBA26 is suitable for low-temperature service—it is not recommended for cryogenic applications—and if heat treatment is mandatory after forming. While normalizing followed by tempering at 650°C or higher is advised for grades STBA23 through STBA26, the final decision depends on end-use requirements and customer specifications. Additionally, while electric resistance welded variants exist in this series, they must undergo special care during welding to avoid internal swelling beyond 0.25mm (or 0.15mm for smaller diameters).