431 Stainless Steel Pipe 1Cr17Ni2 Small-diameter Seamless Steel Pipe

Product Overview

Our 431 stainless steel pipe, also known as 1Cr17Ni2 small - diameter seamless steel pipe, is a high - quality product crafted by Wuxi Weiman Gaodeng Special Steel Co., Ltd. Since its establishment in 2017, our company has been dedicated to the production of stainless steel, alloy steel pipes, nickel - based alloys, and titanium alloys. With an annual export volume ranging from US$5 Million to US$10 Million, we have established a strong presence in multiple international markets including North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, as well as the domestic market.

Material Characteristics

• Composition: The 431 stainless steel, or 1Cr17Ni2, is a martensitic stainless steel. It contains approximately 16 - 18% chromium (Cr) and 1.5 - 2.5% nickel (Ni). The chromium content provides excellent corrosion resistance, forming a passive oxide layer on the surface of the pipe that protects it from rust and other forms of corrosion. The nickel enhances the toughness and ductility of the steel, making the pipe more resistant to cracking under stress.
• Strength: This type of stainless steel offers high strength and hardness. It has good mechanical properties, allowing it to withstand high - pressure applications. The martensitic structure of the steel contributes to its superior strength, which is ideal for use in environments where the pipe may be subjected to heavy loads or pressure.
• Heat Resistance: The 431 stainless steel pipe can maintain its mechanical properties at elevated temperatures. It has a relatively high melting point and can resist oxidation and scaling at high - temperature conditions. This makes it suitable for applications in industries such as heat treatment, power generation, and chemical processing.

Pipe Design and Dimensions

• Shape: The pipe has a round shape, which is one of the most common and practical shapes for fluid transportation and structural applications. The round cross - section provides uniform stress distribution, ensuring the pipe can handle internal and external pressures evenly.
• Small - Diameter: Our small - diameter seamless steel pipes are available in a variety of sizes to meet different customer requirements. The small diameter makes them suitable for applications where space is limited, such as in precision machinery, instrumentation, and small - scale fluid systems.
• Seamless Construction: The seamless design of the pipe eliminates the weak points associated with welded joints. This results in a stronger and more reliable pipe that is less prone to leakage and failure. The seamless construction also provides a smooth inner surface, reducing fluid friction and improving the flow efficiency of the pipe.

Manufacturing Process

• Raw Material Selection: We carefully select high - quality raw materials to ensure the quality of our pipes. The raw materials are sourced from trusted suppliers and undergo strict quality control checks before entering the production process.
• Hot - Rolling and Cold - Drawing: The manufacturing process involves hot - rolling the steel billets into rough pipes, followed by cold - drawing to achieve the desired dimensions and surface finish. The hot - rolling process refines the grain structure of the steel, improving its mechanical properties. The cold - drawing process further enhances the dimensional accuracy and surface smoothness of the pipe.
• Heat Treatment: After the forming process, the pipes are heat - treated to optimize their microstructure and mechanical properties. The heat treatment process can improve the hardness, strength, and toughness of the pipe, as well as relieve internal stresses.

Applications

• Automotive Industry: The 431 stainless steel pipe can be used in automotive exhaust systems, where it needs to withstand high temperatures, corrosive exhaust gases, and mechanical vibrations. Its high strength and corrosion resistance make it an ideal material for this application.
• Aerospace Industry: In the aerospace industry, the small - diameter seamless steel pipes are used in hydraulic systems, fuel lines, and other critical components. The pipes' high strength - to - weight ratio and excellent corrosion resistance are essential for ensuring the safety and reliability of aerospace vehicles.
• Mechanical Engineering: The pipes are also widely used in mechanical engineering for various applications such as hydraulic cylinders, pneumatic systems, and precision machinery. Their small diameter and high strength make them suitable for use in compact and high - performance mechanical devices.

Quality Assurance

• Inspection and Testing: We have a comprehensive quality control system in place to ensure the quality of our products. Each pipe undergoes strict inspection and testing, including non - destructive testing (NDT) such as ultrasonic testing, magnetic particle testing, and eddy - current testing, to detect any internal or surface defects.
• Certification: Our products comply with international standards such as ASTM, JIS, and GB. We also provide relevant quality certificates to guarantee the quality and performance of our pipes. Our commitment to quality has earned us a good reputation among our customers worldwide.