Galvanized steel pipe is a commonly used steel product widely used in construction, engineering, and manufacturing industries. It is very important to understand the national standard thickness standard specification when selecting and using galvanized steel pipe.
1. The importance of national standard thickness standard specification
The national standard thickness specification is formulated according to the needs and requirements of steel pipe applications in different fields. It not only stipulates the thickness range of steel pipes but also ensures that the quality and performance of steel pipes meet the relevant standards. Understanding and complying with the national standard thickness specification can help us choose the right galvanized steel pipe to ensure safe and reliable use.
2. Overview of the national standard thickness standard specification for galvanized steel pipe
According to the national standards GB/T 3091-2015 “Welded Steel Pipe” and GB/T 9711.1-2011 “Steel Pipe for Petroleum and Natural Gas Industry”, the thickness of galvanized steel pipes shall meet the following requirements:
- The wall thickness of galvanized steel pipes shall be within the specified range, generally between 0.8mm and 2.5mm. In special cases, it can be adjusted according to specific needs.
- The average weight of the galvanized layer should meet the specified requirements, usually between 60g/m² and 600g/m². The greater the weight of the galvanized layer, the better the corrosion resistance of the galvanized steel pipe.
- The inner and outer surfaces of the galvanized steel pipe should be smooth, without defects such as wrinkles, cracks, bubbles, etc. At the same time, the galvanized layer should be firmly attached to the surface of the steel pipe and not easy to peel off.
3. The use temperature limit of galvanized steel pipe
The use temperature limit of galvanized steel pipe refers to the temperature range within which the galvanized steel pipe can work normally without deformation, cracking, or failure. According to international standards and industry practices, the use temperature limit of galvanized steel pipe is as follows:
- In general, the use temperature range of galvanized steel pipe is between -40℃ and 200℃.
- If used in special environments, such as high temperature, low temperature, or corrosive environment, it is necessary to select the appropriate galvanized steel pipe material and thickness according to the specific situation.
- When using galvanized steel pipe, pay attention to controlling the temperature to avoid exceeding its use temperature limit, so as not to affect the performance and life of the steel pipe.
4. Advantages and application fields of galvanized steel pipes
Galvanized steel pipes have the following advantages, which make them widely used in the construction, engineering, and manufacturing industries:
- Strong corrosion resistance: The galvanized layer can effectively prevent the steel pipe from being oxidized, corroded, and rusted, and extend the service life of the steel pipe.
- Good welding performance: The galvanized steel pipe has good welding performance and can be easily connected and installed.
- Economic and practical: The price of galvanized steel pipes is relatively low, cost-effective, and suitable for large-scale use.
Galvanized steel pipes are mainly used in building structures, pipeline transportation, machinery manufacturing, and other fields. In the construction field, galvanized steel pipes are often used to build frame structures, and install pipelines and ventilation systems. In the field of pipeline transportation, galvanized steel pipes can be used to transport liquids, gases, and solid particles. In the field of machinery manufacturing, galvanized steel pipes are often used to make mechanical parts and equipment.
Summary:
Understanding the national standard thickness standard specifications of galvanized steel pipes is crucial to the correct selection and use of galvanized steel pipes. When purchasing galvanized steel pipes, we should choose according to specific needs and national standard thickness specifications to ensure that the quality and performance of the steel pipes meet the requirements. At the same time, we also need to pay attention to the use temperature limit of galvanized steel pipes to avoid exceeding their use temperature range, so as not to affect the use effect. Galvanized steel pipes have broad application prospects in the construction, engineering, and manufacturing industries due to their strong corrosion resistance, good welding performance, and economical and practical advantages.
Post time: Mar-07-2025