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Hot Rolled Seamless High Temperature Tube
For industrial applications demanding exceptional performance under extreme thermal stress, our hot rolled seamless high temperature tubes represent the pinnacle of engineering and material science. These tubes are specifically designed to maintain structural integrity, resist oxidation, and prevent creep deformation in sustained high-heat environments, making them indispensable for sectors like power generation, petrochemical processing, and high-temperature furnace construction. The core advantage lies in the hot rolling manufacturing process, which enhances the steel's grain structure, resulting in superior mechanical properties and uniformity compared to cold-formed alternatives. We offer a comprehensive range tailored for thermal management, including our premium Heat Resistant Hot Rolled Seamless Steel Tube, engineered for prolonged service in aggressive atmospheres. Our High Temp Seamless Hot Rolled Steel Pipe is optimized for efficient heat transfer and pressure containment. For applications requiring maximum thermal fatigue resistance, our Thermal Resistant Hot Rolled Seamless Tube provides outstanding stability. Furthermore, our High Temperature Seamless Hot Rolled Pipe is the go-to solution for critical high-pressure, high-temperature piping systems, ensuring reliability and long service life where failure is not an option.
The manufacturing excellence of our <产品名字> begins with the selection of specialized alloy steels, such as ASTM A335 P11, P22, P91, and similar grades rich in chromium and molybdenum. These alloys are fundamental to achieving the required high-temperature strength and corrosion resistance. The steel billet is pierced and then rolled at temperatures above its recrystallization point. This hot rolling process is meticulously controlled to produce a seamless tube with a homogeneous microstructure, free from the weaknesses associated with welded seams. The tubes undergo subsequent heat treatment processes like normalizing and tempering to refine the metallurgical properties, ensuring optimal hardness, toughness, and creep resistance. Rigorous non-destructive testing (NDT), including ultrasonic and eddy current inspections, is performed on every length to guarantee internal and external soundness, alongside comprehensive dimensional checks. This unwavering commitment to quality at every production stage ensures that each <产品名字> delivers consistent, predictable performance in the most demanding thermal applications.
Key Parameters & Specifications:
- Material Grades: ASTM A335 P5, P9, P11, P22, P91; ASTM A213 T11, T22, T91; DIN 17175 15Mo3, 13CrMo44, 10CrMo9-10.
- Manufacturing Standard: ASTM A335 / ASME SA335 for seamless ferritic alloy-steel pipes for high-temperature service.
- Key Features: Excellent creep strength, superior oxidation & sulfidation resistance, good thermal fatigue properties, seamless construction for enhanced pressure integrity.
- Common Applications: Boiler superheaters and reheaters, heat exchangers, steam pipelines, furnace radiant tubes, catalytic cracking units.
| Parameter | Typical Range / Value | Notes |
|---|---|---|
| Outer Diameter (OD) | 10.3 mm - 406.4 mm (0.405" - 16") | Custom sizes outside this range can be quoted upon request. |
| Wall Thickness | 2.0 mm - 40 mm (SCH 10S - SCH XXS) | Thickness is selected based on design pressure and temperature. |
| Length | Up to 12.5 meters (random or fixed lengths) | Can be supplied as straight lengths or U-bends for heat exchangers. |
| Temperature Range | Up to 650°C (1200°F) continuously | Maximum service temperature depends on the specific alloy grade and environment. |
| Tensile Strength (Rm) | 415 MPa - 620 MPa (Grade dependent) | e.g., Min. 415 MPa for P11, Min. 585 MPa for P91 at room temperature. |
| Yield Strength (Rp0.2) | 205 MPa - 415 MPa (Grade dependent) | Specified minimum values at room temperature. |
| Heat Treatment | Full Annealing / Normalizing & Tempering | Mandatory post-rolling treatment to achieve specified mechanical properties. |
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