EN 10217-4 P215NL P265NL Welded Steel Tube: ERW Electric Welded Non-Alloy Steel Tubes For Low Temperature Properties

Introduction

EN 10217-4 is a European standard that specifies the technical delivery conditions for electric welded non-alloy steel tubes for low temperature properties. This standard covers the requirements for tubes made from non-alloy and fine grain steel suitable for low temperature service. In this article, we will explore the key features, chemical composition, mechanical properties, steel grade, application, and possible alternative grades of the EN 10217-4 P215NL and P265NL welded steel tubes.

Key Features

The EN 10217-4 P215NL and P265NL welded steel tubes possess several key features that make them suitable for low temperature applications. These features include:

1. Electric Resistance Welding (ERW): The tubes are manufactured using the ERW process, which ensures a high-quality weld and excellent dimensional accuracy.
2. Non-Alloy Steel: These tubes are made from non-alloy steel, which provides good weldability and toughness.
3. Fine Grain Steel: The steel used in these tubes is fine grain, which enhances the low temperature properties and impact resistance.
4. Suitable for Low Temperature Service: The tubes are specifically designed to withstand low temperatures, making them ideal for applications in cryogenic environments.

Chemical Composition (Table Presentation)

Mechanical Properties (Table Presentation)

Steel Grade

The steel grade used in the EN 10217-4 P215NL and P265NL welded steel tubes is determined by the chemical composition and mechanical properties specified in the standard. These tubes are made from non-alloy and fine grain steel, ensuring good weldability, toughness, and low temperature properties.

Application

The EN 10217-4 P215NL and P265NL welded steel tubes find application in various industries where low temperature resistance is required. Some common applications include:

1. Cryogenic Storage: These tubes are suitable for use in the storage and transportation of liquefied gases, such as liquid nitrogen and liquid oxygen.
2. Petrochemical Industry: They are used in the petrochemical industry for low temperature processes, such as the production and transportation of liquefied natural gas (LNG).
3. Refrigeration Systems: The tubes are employed in the construction of refrigeration systems, ensuring efficient cooling in low temperature environments.
4. Energy Sector: They are utilized in power plants and energy infrastructure for low temperature applications, such as cooling systems and heat exchangers.

Possible Alternative Grades

While the EN 10217-4 P215NL and P265NL welded steel tubes are specifically designed for low temperature service, there are alternative grades available that may suit specific requirements. Some possible alternative grades include:

1. P275NL1 and P275NL2: These grades offer similar low temperature properties and are suitable for applications where higher strength is required.
2. P355NL1 and P355NL2: These grades provide even higher strength and impact resistance at low temperatures, making them suitable for more demanding applications.

It is important to consult the relevant standards and specifications to determine the most appropriate alternative grade for specific applications.

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