Details of DN36 seamless steel pipe

Seamless steel pipes are essential components widely used across various industries, including petroleum, chemicals, power generation, construction, and machinery manufacturing. Among these, the DN36 seamless steel pipe is in high demand for various projects due to its versatility and reliability. Below is a detailed overview of the DN36 seamless steel pipe.

Union Steel Industry Co., Ltd is professional seamless carbon steel pipes manufacturer, for more details, please contact:sales@union-steels.com

Basic Concept of DN36 Seamless Steel Pipe

DN (Diamètre Nominal): This refers to the nominal diameter, a method used to specify the pipe size. The DN designation is commonly used in Europe, Asia, Africa, and other regions for defining pipe specifications.

DN36: A pipe with a nominal diameter of 36mm. This discussion specifically focuses on DN36 seamless steel pipe, which is commonly used in a variety of industrial applications.

Wall Thickness: The wall thickness refers to the difference between the outer and inner diameters of the pipe. This is a critical parameter for seamless steel pipes, as it directly influences the pipe’s mechanical properties and its ability to withstand internal pressure.

Selection and Calculation of DN36 Seamless Steel Pipe Wall Thickness

The selection of the wall thickness for a DN36 seamless steel pipe depends on the specific engineering requirements and design standards. The following factors should be considered when determining the appropriate wall thickness:

Working Pressure: The pressure within the pipeline is a crucial determinant for selecting the wall thickness. A higher working pressure demands a thicker wall to ensure the pipe can safely handle the stress without failure.

Medium Characteristics: The type of substance being transported, such as its temperature and corrosiveness, impacts the wall thickness selection. For instance, high temperatures may lead to material creep, thinning the pipe wall. In such cases, a thicker seamless steel pipe is required to maintain integrity.

Pipeline Laying Environment: Environmental factors, such as geological conditions and the likelihood of seismic activity, should be taken into account. For example, in earthquake-prone areas, selecting a pipe with a thicker wall enhances the pipeline’s seismic performance.

In engineering design, national standards such as GB/T 18248-2016 "Seamless Steel Pipe" and GB/T 3091-2015 "Welded Steel Pipe for Low-Pressure Fluid Transportation" provide detailed guidelines for selecting and calculating the wall thickness of DN36 seamless steel pipes.

Impact of Wall Thickness on Performance

The wall thickness of a DN36 seamless steel pipe significantly affects its performance in various ways:

Mechanical Properties: Thicker walls generally enhance the mechanical properties of the pipe. These include improved tensile, compressive, and bending strength, making the pipe more durable under high-pressure and high-temperature conditions.

Service Life: A thicker wall extends the service life of DN36 seamless steel pipes, particularly when used in the transport of corrosive media. A thicker wall provides better resistance to corrosion, thereby prolonging the pipe’s lifespan.

Installation and Maintenance: While thicker walls offer enhanced performance, they also increase the difficulty and cost of installation. Additionally, maintenance and repair costs are higher for thicker pipes due to the greater material strength and additional labor required.

When choosing the wall thickness for DN36 seamless steel pipe, it is important to balance these factors—ensuring the pipe meets engineering requirements while also being economically viable.

Application Cases of DN36 Seamless Steel Pipe

The DN36 seamless steel pipe is applied in numerous industries and projects. Below are some examples of its use:

Oil and Gas Transportation: DN36 seamless steel pipes are extensively used in long-distance oil and gas pipelines, particularly in branch lines, stations, and supporting infrastructure. One prominent example is the China-Russia East Line Natural Gas Pipeline Project.

Chemical Industry: In chemical plants, DN36 seamless steel pipes are utilized for transporting chemical raw materials and products, including fertilizers, pesticides, and dyes. These pipes are also integral in the construction of chemical equipment such as heat exchangers and reactors.

Construction Industry: The DN36 seamless steel pipe is used in structural applications within the construction industry, such as for scaffolding, formwork support, and structural reinforcements in high-rise buildings. Additionally, they are commonly found in municipal engineering projects, including water supply, drainage, and gas pipelines.