Classification of corrugated metal hoses

In the GB/T 14525-2010 standard, metal hoses are divided into Class A and Class B, with the main differences as follows: 1. Structure: Class A hoses are made by spirally winding stainless steel strips; they are usually single-layered and possess good flexibility. Class B: It is formed by spirally winding multiple layers of stainless steel strips together, which results in a more complex structure and higher strength. 2. Performance Class A: Good flexibility, suitable for general use. Class B: Higher strength, greater pressure resistance and tensile strength, suitable for applications with high requirements. 3. Application Category A: Suitable for low-pressure, normal-temperature environments, such as ventilation and exhaust systems. Class B: Suitable for high-pressure, high-temperature, or corrosive environments, such as in the petroleum and chemical industries. 4. Manufacturing Process Category A: The manufacturing process is relatively simple, resulting in lower costs. Category B: Complex manufacturing process and high cost. 5. Appearance Class A: The surface is relatively smooth with shallow ripples. Class B: The surface ripples are deeper, and the structure is more pronounced. Summary Category A: Good flexibility, suitable for general low-pressure environments. Class B: High strength, suitable for high-pressure, high-temperature, or corrosive environments. The choice should be determined based on specific requirements and application scenarios.