Corrosion-Resistant 5-15 Inch Carbon Seamless Boiler Tube

Corrosion-Resistant 5-15 Inch Carbon Seamless Boiler Tube

Product Overview

This product is a5 to 15-inch (approx. 127mm to 381mm)carbon seamless boiler tube, specifically designed for high-temperature, high-pressure, and corrosive service conditions. Manufactured from high-quality carbon steel or chromium-molybdenum alloy steel, it complies with international standards including ASTM A192/A192M, ASME SA213, and GB5310, meeting the stringent demands of power station boilers, industrial furnaces, and petrochemical applications.

This diameter range covers superheater, reheater, and water wall tube systems from small-to-medium industrial boilers to large-scale utility boilers, making it an ideal choice for critical pressure parts in medium and large boiler systems.

Core Advantages

🔒Superior Corrosion Resistance

⇒Precision-controlled carbon content (0.08%-0.15%) combined with alloying elements such as Cr and Mo forms a dense oxide layer, effectively resisting high-temperature flue gas corrosion, steam oxidation, and stress corrosion cracking

⇒Optional black protective coating enhances corrosion resistance by 30%-50% in severe environments such as marine or chemical applications

⇒Seamless structure eliminates weld weak points, fundamentally preventing preferential weld corrosion

💪High Strength & Thermal Stability

⇒ Operating Temperature Range: -20℃ to 550℃ (depending on material grade and coating selection)

⇒ Pressure Rating: Up to 3000 PSI (approx. 20.7 MPa) with ample safety margin

⇒Excellent creep resistance and sustained strength ensure structural stability during long-term high-temperature operation

📐Large Diameter Specification Advantage

⇒ Outer Diameter Range: 5" - 15" (127mm - 381mm), classified as large-diameter series in boiler tubes

⇒ Wall Thickness Range: Customizable per design requirements, typically 3mm - 40mm

⇒Ideal for high-flow steam transmission and large-furnace heat exchange requirements, reducing the number of tubes and simplifying system layout

Technical Specifications

Application Scenarios

Quality Assurance

✅100 percenthydrostatic testing,flaring testing, andflattening testingon each tube to ensure dense, defect-free structure

✅Hardness and metallographic examinationto guarantee grain size and decarburization layer comply with specification requirements

✅Full traceability throughout the entire process, with complete material certificates and inspection reports provided

✅Compliance with ASTM, ASME, GB and other international standards; third-party inspection supported

Why Choose Us?

With years of deep expertise in the boiler tube sector, we maintain close partnerships with leading domestic steel mills including Baosteel, Baotou Steel, and Tianjin Seamless, ensuring a reliable raw material supply. For 5-15 inch large-diameter boiler tubes, we offer mature custom fabrication capabilities, including value-added services such as cutting, bending, and weld end preparation, helping customers shorten project timelines and reduce on-site installation costs.

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