DIN EN 10216-2 Standard and its Sub Grades

DIN EN 10216-2 Standard and its Sub-grades

DIN EN 10216-2 Standard and its Sub-grades: Usage, Varieties, Technical Information, Dimensions and Tolerances, Standards, Chemical and Mechanical Properties, Certification


In the iron and steel industry, standards play a crucial role in ensuring quality, safety, and compatibility of materials and products. One such important standard is DIN EN 10216-2, which defines the technical delivery conditions for seamless steel tubes made of non-alloy and alloy steels. This article aims to provide a comprehensive understanding of DIN EN 10216-2 standard and its sub-grades, highlighting their detailed usage, varieties, technical information, dimensions and tolerances, international standards, chemical and mechanical properties, and certification.

DIN EN 10216-2 Standard: Overview and Significance

The EN 10216-2 standard specifies the requirements for seamless non-alloy and alloy steel tubes for specified elevated temperature conditions. Primarily used in the construction of pressure equipment such as boilers, heat exchangers, and pipelines. By adhering to this standard, manufacturers ensure the interchangeability of their products across different industries and countries, promoting efficiency and safety in the iron and steel sector.

Varieties of DIN EN 10216-2 Tubes:

DIN EN 10216-2 standard covers various sub-grades that differ in their chemical composition and mechanical properties. Some of the commonly used sub-grades include:

  1. P235GH: This sub-grade is characterized by good weldability and high strength. It is widely employed in the manufacturing of pressure vessels, boilers, and heat exchangers operating at moderate temperatures.
  2. P265GH: Offering higher mechanical properties than P235GH, this sub-grade is utilized in power plants, petrochemical refineries, and other industrial applications where elevated temperatures and pressures are involved.
  3. 16Mo3: With increased chromium and molybdenum content, 16Mo3 provides enhanced heat resistance and creep strength. It is commonly found in power plant equipment, industrial boilers, and heat exchangers.

Technical Information, Dimensions, and Tolerances:

DIN EN 10216-2 standard provides detailed technical information regarding the manufacturing process, chemical composition, and mechanical properties of the tubes. It specifies dimensions, tolerances, and permissible deviations for outer diameter, wall thickness, and length, ensuring uniformity and compatibility in different applications.

International Standards

To promote global compatibility and facilitate international trade, DIN EN 10216-2 standard aligns with equivalent standards from other international organizations. For instance, it corresponds to ASTM A106/A106M (American Society for Testing and Materials) and BS EN 10216-2 (British Standards), enabling seamless integration of products in the global marketplace.

Chemical and Mechanical Properties:

The DIN EN 10216-2 standard defines the chemical composition requirements for different sub-grades, highlighting elements such as carbon, manganese, phosphorus, sulfur, silicon, and others. Additionally, it specifies mechanical properties such as yield strength, tensile strength, elongation, and impact strength, thereby ensuring the tubes’ reliability and durability in various operating conditions. Moreover, this standard establishes a comprehensive framework for evaluating the performance of the tubes, providing a solid basis for quality assessment and regulatory compliance.

Certification of Compliance:

Manufacturers adhering to the DIN EN 10216-2 standard can obtain certification to demonstrate their compliance with the specified requirements. Certifications such as EN 10204 provide assurance to customers and regulatory bodies about the quality and traceability fostering confidence in the industry.

Usage of DIN EN 10216-2 Standard:

DIN EN 10216-2 standard encompasses a wide range of applications in various industries. Some of the key sectors where this standard finds extensive usage include:

  1. Power Generation: Seamless steel tubes complying with 10216-2 are employed in power plants for the construction of boilers, superheaters, and reheaters. These tubes can withstand high temperatures and pressures, making them suitable for the efficient generation of electricity.
  2. Petrochemical Industry: The petrochemical sector utilizes 10216-2 compliant tubes in the production of heat exchangers and pipelines for the transportation of fluids and gases. The standard ensures the durability and integrity of these tubes, even in corrosive environments.
  3. Automotive Manufacturing: Within the automotive industry, 10216-2 standard plays a vital role in the production of exhaust systems and components. The seamless steel tubes provide excellent resistance to high-temperature exhaust gases, ensuring optimal performance and longevity of automotive systems.


EN 10216-2 standard and its sub-grades play a significant role in the iron and steel sector, especially in the construction of pressure equipment operating at elevated temperatures. By adhering to this standard, manufacturers ensure the compatibility, reliability, and safety of their products. The comprehensive understanding of the in this article will assist your in comprehending the importance and applicability of EN 10216-2 standard.

DIN EN 10216-2 Standard and its Sub-grades


What is EN standards classification?: A Comprehensive Overview

Understanding EN Standards Classification:

EN Standards Classification is a systematic framework established by the European Committee for Standardization (CEN) to categorize seamless steel pipes based on specific characteristics and requirements. It provides a clear structure that enables manufacturers, suppliers, and users to identify and select the most suitable seamless steel pipes for their intended applications.

Key Components of EN Classification:

The EN Standards Classification comprises several key components that help in categorizing seamless steel pipes. Some important components include:

a. Material Composition: EN Standards Classification takes into account the material composition of seamless steel pipes, such as the type of steel used and its chemical composition. This classification helps identify pipes suitable for specific environments, such as high temperatures, corrosive conditions, or extreme pressure applications.

b. Mechanical Properties: Seamless steel pipes are classified based on their mechanical properties, including tensile strength, yield strength, elongation, and impact resistance. This classification enables users to select pipes with the required mechanical properties for their intended applications, ensuring structural integrity and performance.

c. Dimensional Specifications: EN Standards Classification considers dimensional specifications such as outer diameter, wall thickness, and length. These specifications help users identify pipes that meet their precise dimensional requirements, ensuring compatibility with existing infrastructure and ease of installation.

d. Application-specific Standards: The EN Standards Classification also includes specific standards tailored for various applications, such as pipes for structural purposes, pressure applications, or high-temperature environments. These application-specific standards provide detailed requirements and guidelines to ensure seamless steel pipes perform optimally in their intended applications.

Significance of EN Classification:

The EN Standards Classification offers several advantages for stakeholders in the seamless steel pipe sector:

a. Standardization: By categorizing seamless steel pipes based on specific criteria, the EN Standards Classification promotes standardization across the industry. It ensures consistency in product quality, performance, and dimensional specifications, allowing for seamless integration of pipes from different manufacturers.

b. Product Selection: The classification system helps users identify seamless steel pipes that align with their specific requirements, eliminating the guesswork involved in selecting the right product. It allows for informed decision-making, ensuring that the chosen pipes meet the necessary standards for their intended applications.c.

Compliance and Regulation:

The EN Standards Classification ensures compliance with industry regulations and safety standards. It provides a reliable framework for manufacturers and suppliers to produce and supply seamless steel pipes that meet the necessary requirements, ensuring the overall safety and reliability of infrastructure and systems.

Application Areas:

The EN Standards Classification is applicable to various industries where seamless steel pipes are used, including:

a. Oil and Gas: The classification system helps identify seamless steel pipes suitable for oil and gas exploration, production, and transportation, ensuring the integrity and reliability of pipelines and offshore structures.

b. Construction and Infrastructure: EN Standards Classification assists in selecting seamless steel pipes for construction and infrastructure projects, such as building frameworks, bridges, and underground pipelines, ensuring strength, durability, and compliance with building codes.

c. Mechanical Engineering: The classification system aids in choosing seamless steel pipes for mechanical engineering applications, including machinery, equipment, and automotive components. It ensures the pipes meet the required specifications for mechanical strength, precision, and performance.

The EN Standards Classification is a valuable tool for the seamless steel pipe industry, providing a structured approach to categorizing pipes based on material composition, mechanical properties, dimensional specifications, and application-specific requirements.


What is EN standards classification?

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