Q345D seamless steel pipe implements the GB/T6479-2013 standard, which stipulates its material characteristics, production process, inspection requirements, and application scenarios. The following is a specific analysis:
First, the standard overview of Q345D seamless steel pipe
GB/T6479-2013 is a Chinese national standard, and its full name is "Seamless Steel Pipe for High-Pressure Fertilizer Equipment". This standard specifies the size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking, and quality certificate of seamless steel pipes for high-pressure fertilizer equipment. As a product that meets this standard, the Q345D seamless steel pipe has a specific chemical composition, mechanical properties, and delivery status.
Second, the characteristics of Q345D seamless steel pipe
1. Chemical composition: The chemical composition of the Q345D seamless steel pipe is strictly controlled, and it has good mechanical properties and corrosion resistance. Among them, key elements such as carbon (C) content, silicon (Si) content, and manganese (Mn) content all meet the requirements of the GB/T6479-2013 standard.
2. Mechanical properties: Q345D seamless steel pipe has high yield strength and tensile strength, as well as good elongation and impact toughness. Its yield strength is not less than 345MPa, the tensile strength is between 470-630MPa, the elongation is not less than 22%, and it can maintain good impact toughness at a low temperature of -20℃.
3. Delivery status: Q345D seamless steel pipe is usually delivered in a normalized state, with uniform internal structure and stable mechanical properties.
Third, the production process and inspection of the Q345D seamless steel pipe
1. Production process: The production process of Q345D seamless steel pipe includes multiple links such as raw material preparation, heating, perforation, rolling, heat treatment, straightening, cutting, inspection, and packaging. Each link needs to strictly control the process parameters to ensure product quality.
2. Inspection requirements: According to GB/T6479-2013 standard, Q345D seamless steel pipes are subject to a series of inspections, including chemical composition analysis, mechanical properties testing, non-destructive testing (such as ultrasonic testing, magnetic particle testing, etc.), size and shape inspection, etc. These inspections are aimed at ensuring that all performance indicators of the steel pipes meet the standard requirements.
Threeway Steel is known as a professional supplier engaged in manufacturing and distributing a wide range of steel pipe, and our headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
