Discussion and application of DN36 wall thickness of seamless steel pipe

First, introduction.
As an important steel product, seamless steel pipe is widely used in various fields, such as petroleum, chemical industry, electric power, construction, machinery manufacturing, etc. Among them, DN36 seamless steel pipe has a high demand in many projects.

Second, the basic concept of DN36 seamless steel pipe.
1. DN (Diamètre Nominal): nominal diameter, which is a way of expressing pipe specifications to indicate the size of the pipe. In Europe, Asia, Africa, and other regions, DN series pipe specifications are widely used.
2. DN36: Pipe with a nominal diameter of 36mm. Here, we mainly discuss DN36 seamless steel pipe.
3. Wall thickness: The wall thickness of the pipe refers to the difference between the outer diameter and the inner diameter of the pipe, that is, the thickness of the pipe wall. Wall thickness is an important parameter of seamless steel pipe, which directly affects its mechanical properties and ability to withstand pressure.

Third, selection and calculation of DN36 wall thickness of seamless steel pipe.
The wall thickness selection of DN36 seamless steel pipe should be based on actual engineering needs and design specifications. In practical applications, the choice of wall thickness is mainly affected by the following factors:
1. Working pressure: The working pressure of seamless steel pipe DN36 directly affects the choice of its wall thickness. The higher the pressure, the greater the required wall thickness to ensure the safety and stability of the pipeline.
2. Medium characteristics: The properties of the conveying medium, such as temperature, corrosiveness, etc., will also affect the choice of wall thickness. For example, in a high-temperature environment, the pipeline material may creep, resulting in thinning of the wall thickness. At this time, a seamless steel pipe with a larger wall thickness needs to be selected.
3. Pipeline laying environment: The geological conditions and earthquake intensity of the pipeline laying environment should also be taken into account. For example, in areas where earthquakes occur frequently, seamless steel pipes with larger wall thickness should be selected to improve the seismic performance of the pipeline.
In actual engineering design, relevant design specifications and standards, such as GB/T 18248-2016 "Seamless Steel Pipe" and GB/T 3091-2015 "Welded Steel Pipe for Low-Pressure Fluid Transportation", etc., can be referred to for the selection and calculation of the wall thickness of seamless steel pipe DN36.

Fourth, the influence of the wall thickness of seamless steel pipe DN36 on performance.
1. Mechanical properties: The thicker the wall, the better the mechanical properties of seamless steel pipe DN36, and the tensile, compressive, and bending properties can be improved. When subjected to harsh working conditions such as high pressure and high temperature, seamless steel pipes with larger wall thickness have higher safety.
2. Life: The thicker the wall, the longer the service life of seamless steel pipe DN36. When conveying corrosive media, seamless steel pipes with larger wall thickness have better corrosion resistance, thereby extending their service life.
3. Installation and maintenance: The thicker the wall, the greater the installation difficulty and cost of seamless steel pipe DN36. At the same time, during pipeline maintenance and overhaul, the replacement and repair costs of seamless steel pipes with larger wall thickness will also be higher.
Therefore, when choosing the wall thickness of seamless steel pipe DN36, various factors should be considered comprehensively to select a wall thickness that meets engineering needs and is economically reasonable.

Fifth, the application cases of seamless steel pipe DN36 in actual projects.
The following are several application cases of seamless steel pipe DN36 in actual projects for reference:
1. Oil and gas transportation: In long-distance oil and gas pipeline projects, seamless steel pipe DN36 is widely used in branch lines, stations, and supporting projects, such as the China-Russia East Line Natural Gas Pipeline Project.
2. Chemical industry: In chemical enterprises, seamless steel pipe DN36 is used to transport various chemical raw materials and products, such as fertilizers, pesticides, dyes, etc. At the same time, it is also used in the manufacture of chemical equipment, such as heat exchangers, reactors, etc.
3. Construction industry: In the construction industry, seamless steel pipe DN36 is used for structural support, scaffolding, formwork support, etc. of high-rise buildings. In addition, it is also used in water supply, drainage, gas, and other pipeline systems in municipal engineering.

The selection and calculation of the wall thickness of seamless steel pipe. DN36 should be based on the actual project needs and design specifications. In actual applications, factors such as working pressure, medium characteristics, and pipeline laying environment should be comprehensively considered to select a wall thickness that meets both project needs and is economically reasonable. Seamless steel pipe DN36 has broad application prospects in many fields such as petroleum, chemical industry, and construction.