ASME SA335 P11 is a high temperature seamless ferritic alloy steel nominal pipe manufactured in accordance with the American standard ASME SA-335/SA-335M. P11 is a low-alloy heat-resistant steel with specific chemical composition and mechanical properties, suitable for high temperature working environments.

ASME SA335 P11 steel pipe features:

 

Excellent high temperature performance: ASME SA335 P11 steel pipe has good mechanical properties and corrosion resistance under high temperature conditions, and can maintain a stable structure and service life.

 

High strength and corrosion resistance: The strength and hardness of the steel pipe mainly depend on its chemical composition and heat treatment process, making it excellent in a variety of complex environments. In addition, it also has good corrosion resistance and can resist the erosion of a variety of chemical substances.

 

Excellent machining and welding performance: ASME SA335 P11 steel pipe is easy to process and connect, reducing the complexity of engineering and improving work efficiency.

 

The main chemical components of ASME SA335 P11 steel pipes include carbon (C), manganese (Mn), phosphorus (P), sulfur (S), silicon (Si), chromium (Cr), molybdenum (Mo), nickel (Ni) and vanadium (V). The specific chemical composition is as follows:

 

Carbon (C) : 0.05~0.15%

 

Manganese (Mn) : 0.30-0.60%

 

Phosphorus (P) : Maximum 0.025%

 

Sulfur (S) : Maximum 0.025%

 

Silicon (Si) : 0.50~1.00%

 

Chromium (Cr) : 1.00~1.50%

 

Molybdenum (Mo) : 0.44~0.65%

 

Nickel (Ni) : 0.50% Max

 

Vanadium (V) : 0.18~0.25%

 

The delivery condition of ASME SA335 P11 steel pipe is usually heat treated. In addition, the seamless steel pipe should be hydraulically tested and non-destructive testing to ensure that its quality and performance meet the standard requirements.

 

ASME SA335 P11 steel pipes are widely used in a variety of engineering fields, especially in situations requiring high temperature and pressure. It is often used in 300MW, 600MW and other boiler superheater, reheater and other heating surface piping and collecting box, main steam pipeline and so on, whose operating temperature does not exceed 550℃. In addition, it can also be used to manufacture carbon structural steel, alloy structural steel and stainless heat-resistant steel seamless steel pipes for steam boiler pipes with high pressure and above.