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Heat Enduring Hot Rolled Seamless Steel Pipe

Operating in extreme heat environments demands materials that offer uncompromising reliability and structural integrity. Our Heat Enduring Hot Rolled Seamless Steel Pipe is engineered specifically for such high-stakes applications, from power generation and petrochemical processing to high-temperature furnaces and heat exchangers. The inherent strength and seamless construction eliminate vulnerabilities found in welded pipes, ensuring superior performance under sustained thermal stress and pressure. To explore our specialized offerings for demanding thermal conditions, you can review our Heat Resistant Hot Rolled Seamless Steel Tube, designed for exceptional resistance to scaling and oxidation. For applications involving extreme operational temperatures, our High Temp Seamless Hot Rolled Steel Pipe provides outstanding creep strength. We also offer advanced solutions like the Thermal Resistant Hot Rolled Seamless Tube for efficient thermal management systems and the High Temperature Seamless Hot Rolled Pipe for prolonged service in aggressive atmospheres.


The manufacturing excellence of the Heat Enduring Hot Rolled Seamless Steel Pipe begins with a solid billet, which is pierced and rolled at high temperatures to create a uniform, hollow shell without any seams. This hot rolling process refines the grain structure, enhancing the pipe's mechanical properties and its ability to withstand thermal cycling without degradation. Key performance parameters are meticulously controlled to meet international standards, ensuring each pipe delivers consistent quality and durability. The following specifications detail the core attributes that define our product's capability in high-heat service.

Key Specifications & Materials

  • Standard Compliance: ASTM A335, ASTM A213, ASME SA335, EN 10216-2
  • Primary Grades: P5, P9, P11, P22, P91; T5, T9, T11, T22, T91
  • Key Characteristics: Excellent Creep Strength, High Oxidation Resistance, Good Thermal Fatigue Resistance, Stable Microstructure at Elevated Temperatures

Detailed Technical Parameters

Parameter Range / Specification Notes
Outer Diameter (OD) 10.3 mm - 914 mm (0.405" - 36") Custom sizes beyond this range are available upon request.
Wall Thickness (WT) 1.24 mm - 80 mm (Schedules 10S to XXS) Thickness is precisely controlled for optimal pressure rating.
Length Up to 12.5 meters (Random, Single Random, or Double Random) Fixed lengths or cut-to-size options are provided.
Temperature Service Range Up to 650°C (1202°F) for continuous service Specific limits depend on the alloy grade and application environment.
Pressure Rating Varies by size, grade, and wall thickness; designed per ASME B31.1/B31.3 Detailed pressure-temperature charts are provided for engineering.
End Finish Plain End, Beveled End, Threaded & Coupled Prepared as per customer specifications for immediate installation.
Surface Treatment Black, Galvanized, or with Anti-Corrosion Coating Treatments are applied to suit storage, transit, and service conditions.

Available Alloy Compositions (Typical % Weight)

Grade C Mn Cr Mo Si Other Elements
P5 / T5 0.15 max 0.30-0.60 4.00-6.00 0.45-0.65 0.50 max -
P9 / T9 0.15 max 0.30-0.60 8.00-10.00 0.90-1.10 1.00 max -
P11 / T11 0.05-0.15 0.30-0.60 1.00-1.50 0.44-0.65 0.50-1.00 -
P22 / T22 0.15 max 0.30-0.60 1.90-2.60 0.87-1.13 0.50 max -
P91 / T91 0.08-0.12 0.30-0.60 8.00-9.50 0.85-1.05 0.20-0.50 V: 0.18-0.25, Nb: 0.06-0.10, N: 0.03-0.07

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