EN 10217-5 P235GH Welded Steel Tube Submerged Are Welded For High Temperature Service

EN 10217-5 P235GH P265GH 16Mo3 Welded Steel Tube Submerged Arc Welded for High Temperature Service

Introduction

EN 10217-5 is a European standard that specifies the technical delivery conditions for welded steel tubes for pressure purposes. This article focuses on the P235GH, P265GH, and 16Mo3 grades of steel tubes, which are commonly used for high-temperature service. We will explore the material, specification, key features, chemical composition, mechanical properties, steel grade, application, and possible alternative grades.

Material and Specification

The EN 10217-5 standard covers welded steel tubes made from non-alloy and fine grain steels. The P235GH, P265GH, and 16Mo3 grades are specifically designed for high-temperature service. These tubes are manufactured using the submerged arc welding (SAW) process, which ensures excellent weld integrity and dimensional accuracy.

Key Features

The key features of EN 10217-5 P235GH, P265GH, and 16Mo3 welded steel tubes are as follows:

1. High-temperature resistance: These tubes are capable of withstanding elevated temperatures, making them suitable for applications involving heat transfer and pressure.
2. Good weldability: The submerged arc welding process used in their manufacturing ensures strong and reliable welds, contributing to the overall structural integrity.
3. Corrosion resistance: The steel tubes exhibit good resistance to corrosion, making them suitable for various industrial environments.
4. Dimensional accuracy: EN 10217-5 specifies strict tolerances and dimensional requirements, ensuring consistent and precise tube dimensions.

Chemical Composition

Mechanical Properties

Steel Grade

The P235GH, P265GH, and 16Mo3 grades are classified as non-alloy and alloy steels, respectively. These grades are widely used in various industries due to their excellent high-temperature properties.

Application

EN 10217-5 P235GH, P265GH, and 16Mo3 welded steel tubes find extensive application in industries such as:

1. Power generation: These tubes are used in boilers, heat exchangers, and superheaters, where high-temperature resistance is crucial.
2. Petrochemical industry: They are employed in refineries and chemical plants for processes involving high temperatures and pressure.
3. Oil and gas industry: The tubes are used in pipelines and equipment for transporting and processing oil and gas.
4. Construction: They find application in structural components that require resistance to high temperatures and corrosion.

Possible Alternative Grades

In addition to the mentioned grades, there are several alternative grades available for specific applications. Some of the possible alternative grades include:

1. P235GH alternative grades: P265GH, P295GH, P355GH
2. P265GH alternative grades: P235GH, P295GH, P355GH
3. 16Mo3 alternative grades: 15Mo3, 13CrMo4-5, 10CrMo9-10

It is important to consult the relevant standards and specifications to determine the most suitable alternative grade for a specific application.

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