ASTM A335 / ASME SA335 P11 Seamless Alloy Steel Pipe For Hydrocracking Furnace

ASTM A335 / ASME SA335 P11 Seamless Alloy Steel Pipe For Hydrocracking Furnace

ASTM A335 P11 alloy steel seamless pipe is specified under the ASTM A335/A335M standard, which covers seamless ferritic alloy steel pipes for high-temperature and high-pressure service. The ASTM A335 P11 alloy steel pipe features a balanced chemical composition of chromium, molybdenum and silicon. The chromium element enhances high-temperature oxidation and corrosion resistance, molybdenum improves creep strength and high-pressure durability, while silicon optimizes high-temperature surface stability. Unlike carbon steel pipes, P11 alloy steel pipes maintain stable mechanical performance under long-term high-temperature and high-pressure working conditions, making it a core material for thermal power, petrochemical and industrial high-temperature piping systems. As a seamless pipe product, it eliminates welding seam defects, ensuring integral structural uniformity and higher pressure-bearing safety.

Chemical Composition(%):

Mechanical Properties:

Key Features of ASTM A335 P11 Alloy Steel Seamless Pipes:

High-Temperature Resistance

Superior Oxidation & Corrosion Resistance

Good Weldability & Processability

Uniform Structural Performance

Low Thermal Expansion

Good resistance to hydrogen attack

Main Applications Of P11 Seamless Pipes:

Petrochemical Industry

Industrial Furnace & Heating Equipment

Energy & Metallurgical Industry

Thermal Power Plants

Power Generation

Chemical and Fertilizer Industry

Superheater and Reheater Tubes in Boilers

Heat Exchanger Tubing in Nuclear

Furnace Tubes and Reformers.

High-temperature Steam Lines