ASTM A335 GRADE P11 ALLOY STEEL SEAMLESS PIPE FOR HEATER RADIANT SECTION
Yuhong Group specializes in the production of alloy boiler pipes, dedicated to providing high-quality
products for power plants and related industries. Our alloy boiler pipes offer exceptional high-temper-
ature and pressure resistance, ensuring reliable performance even in extreme operating conditions.
With advanced manufacturing techniques and strict quality control, Yuhong Group's alloy boiler pipes are
widely used in various power stations, ensuring equipment safety and efficiency. We are committed to
continuous innovation and collaboration with our clients to help drive a sustainable future together.
P11 IBR Pipe Mechanical Characteristics
| Yield Properties | Tensile Properties | Elongational |
| 205 min | 415 min | 30 min |
P11 Pipe Telorence
| ASTM A530 & ASTM A335 | NPS | Outside Diameter, inch | Tolerance, mm |
| 1/8≤Outer Diameter≤1-1/2 | ±0.40 |
| 1-1/2＜Outer Diameter≤4 | ±0.79 |
| 4＜Outer Diameter≤8 | +1.59/-0.79 |
| 8＜Outer Diameter≤12 | +2.38/-0.79 |
| Outer Diameter>12 | ±1% |
The fired heater consists of several distinct zones: radiant, shield, and convection. The radiant zone is responsible for absorbing and emitting heat, while the shield zone protects sensitive components from high temperatures. Meanwhile, the convection zone improves heat transfer efficiency. Each zone plays a vital role in the overall heat transfer process.
The tubes in the radiant section of the heater are typically configured as U-shaped, S-shaped, straight, or J-shaped.
In addition, P2, P12, P22, P22L, P21, P21L, P5, P9 and P91 are alloy steels used for the rebuilding and modernisation of existing heaters and equipment. These materials are widely used in upgrading projects for boilers, heaters and other industrial equipment due to their excellent high temperature strength and corrosion resistance. By using these alloy steels, it is possible to improve the overall efficiency of the equipment, extend its service life, and ensure safety and reliability in high-temperature and high-pressure environments. Each material plays an important role in specific application scenarios, helping to meet the energy efficiency and equipment performance requirements of modern industry.
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ASTM A335 GRADE P11 Alloy Steel Seamless Pipe For Heater Radiant Section Images
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