CS Pipe Gr 335 refers to a grade of carbon steel pipe that meets the ASTM A335 standard. Here's a brief overview: - "CS" stands for Carbon Steel - "Pipe" refers to the product form - "Gr" stands for Grade - "335" refers to the ASTM A335 standard specification for seamless ferritic alloy-steel pipe for high-temperature service ASTM A335 Grade 335 is a chromium-molybdenum alloy steel pipe that is widely used for high-temperature service in power plants, refineries, and other industries. It has a nominal chromium content of 0.5% and a nominal molybdenum content of 0.5%, which provides good strength, toughness, and resistance to corrosion and oxidation. Some of the key properties of CS Pipe Gr 335 include: - High temperature resistance - Good strength and toughness - Resistance to corrosion and oxidation - Good weldability and machinability CS Pipe Gr 335 is commonly used in applications such as: - Power plant piping - Refinery piping - Heat exchangers - Boilers - High-temperature processing equipment