EN 10210 Seamless Steel Pipe vs. EN 10219 Welded Steel Pipe

EN 10210 and EN 10219 are two common steel pipe standards in the European market. They have their own characteristics in production requirements, application scenarios and technical specifications. The following will give you a detailed introduction.

Overview of EN 10210 standards

EN 10210 is another standard in the European steel pipe industry, which is specifically used for the production and application of hot-rolled steel pipes. Unlike EN 10219, EN 10210 mainly covers the relevant requirements of hot-rolled seamless steel pipe, and is mainly used in structures that need to withstand high pressures and high temperatures.

1. Contents of EN 10210 standard

Material requirements: The material requirements of hot-rolled seamless steel pipes are strict, covering the chemical composition, physical properties, etc. of different alloy steels and non-alloy steels.

Production process requirements: Clearly stipulate the hot rolling process of seamless steel pipes, especially the requirements for cooling speed, dimensional accuracy, etc. of steel pipes during the production process.

Inspection and quality control: Including quality inspection standards such as size, wall thickness, and mechanical properties of seamless steel pipes to ensure that the steel pipes meet relevant performance requirements.

2. Classification of EN 10210

The EN 10210 standard divides hot-rolled seamless steel pipes into two categories:

Non-alloy steel pipes: Used in ordinary buildings and structural engineering, such as industrial facilities, storage facilities, etc.

Alloy steel pipes: Due to the addition of alloy elements, this type of steel pipe has higher strength, corrosion resistance and better high temperature resistance, and is suitable for more demanding environments, such as high temperature and high pressure energy facilities.

3. Common applications of EN 10210

Hot-rolled seamless steel pipes of EN 10210 standard are mainly used in the following aspects:

High temperature and high pressure equipment: Such as boilers, pressure vessels and other equipment with high strength requirements.

Industrial structures: Including heavy structures such as pipe supports and industrial plants.

Energy industry: Especially in the transportation pipelines of oil and natural gas, alloy steel pipes are often used, which have good corrosion resistance and high temperature resistance.

Overview of EN 10219 standards

EN 10219 is a standard for cold-formed welded structural steel pipes issued by the European Committee for Standardization (CEN). This standard applies to cold-formed welded steel pipes, that is, steel pipes manufactured by cold forming methods, which are widely used in building structures, bridge construction, transportation facilities and other fields.

1. Contents of EN 10219 standard

Material requirements: Including chemical composition, mechanical properties, dimensional tolerances, etc. of welded steel pipes.

Manufacturing requirements: Detailed description of technical details such as production methods, welding processes, and cold-formed forming processes of cold-formed welded steel pipes.

Quality control: Strict regulations are imposed on the quality requirements of each welded steel pipe to ensure the performance of the product in harsh environments such as high strength and high pressure.

2. Classification of EN 10219

The EN 10219 standard divides cold-bent welded steel pipes into two categories: non-alloy steel pipes (EN 10219-1) and alloy steel pipes (EN 10219-2). There are certain differences in the application of these two types of steel pipes, as follows:

Non-alloy steel pipes: Suitable for conventional structural construction, commonly seen in building steel structures, bridges, support systems, etc.

Alloy steel pipes: Due to the addition of alloy elements, this type of steel pipe has stronger corrosion resistance, high temperature resistance and better mechanical properties, and is suitable for projects in special environments, such as tubing, natural gas pipeline, heat exchanger tube, etc.

3. Common applications of EN 10219

Steel pipes of EN 10219 standard are often used in the following projects:

Building structures: As important load-bearing components, cold-bent welded steel pipes are widely used in modern building structures, especially in the construction of high-rise buildings, large bridges, industrial plants, etc.

Bridge construction: Due to the high strength and light weight of cold-bent welded steel pipes, they are widely used in the support and structural systems of bridges.

Energy field: In the construction of oil and gas pipelines, alloy steel pipes are manufactured according to EN 10219 standards and can withstand high pressures and temperatures.

Differences between EN 10210 and EN 10219

1. Differences in production process

EN 10210 standard involves the production process of hot-rolled seamless steel pipes. The steel pipes are heated, rolled and then cooled. The production process of hot-rolled seamless steel pipes is relatively complex. They are suitable for applications with higher temperatures and pressures. They are often used in structures with high strength requirements and pipes in high-temperature environments.

EN 10219 standard mainly involves the production process of cold-bent welded steel pipes. Cold-bent welded steel pipes are rolled into tubes by cold forming technology and welding process. Since there is no heating in the production process, the internal stress of the steel pipe is small and the surface quality is high, which is suitable for conventional buildings and structures.

2. Different application scenarios of steel pipes

EN 10210 standard hot-rolled seamless steel pipes are more used in high-temperature and high-pressure environments, such as boiler tube, oil and gas pipeline, and structure of high-temperature equipment.

EN 10219 standard cold-bent welded steel pipes are usually used in fields with high bearing capacity requirements such as building structures and bridge construction, and are suitable for conventional construction and structural engineering.

3. Differences in material and performance requirements

EN 10210 standard has more stringent requirements for alloy steels, especially for performance requirements in high-temperature environments, including strength, corrosion resistance and high-temperature resistance.

EN 10219 standard has relatively broad requirements for the material of steel pipes, covering different non-alloy steels and alloy steels, and mainly focusing on the mechanical properties and welding properties of steel pipes.

4. Different applicable production equipment

Due to the process differences between cold-bending welding and hot-rolling production, the production of steel pipes in accordance with EN 10219 standard mainly relies on cold forming machines and welding equipment, while the production of steel pipes in accordance with EN 10210 standard relies on equipment such as hot rolling mills and high-temperature heating furnaces.

Basis for choosing EN 10210 and EN 10219

When choosing EN 10210 and EN 10219 steel pipes, enterprises need to decide based on specific application requirements:

1. Environmental requirements

If the project involves harsh environments such as high temperature and high pressure, it is recommended to choose hot-rolled seamless steel pipes in accordance with EN 10210 standard. If the application environment is relatively conventional, cold-bent welded steel pipes in accordance with EN 10219 standard can be selected.

2. Performance requirements

For pipes that require higher corrosion resistance and high temperature resistance, hot-rolled seamless steel pipes in accordance with EN 10210 standard are more suitable. For conventional buildings and infrastructure, EN 10219 cold-bent welded steel pipes are sufficient to meet the needs.

3. Production process

For steel pipes in building structures and other fields, cold-formed welded steel pipes (EN 10219) are more cost-effective; for high-strength pipes in the energy, oil and gas industries, hot-rolled seamless steel pipes (EN 10210) are a better choice.

Read more: Din en 10220 seamless steel pipes