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Basic Information
Standard: EN 10210
Steel Grade: S235JRH, S275JOH, S275J2H, S355JOH, S355J2H, S355K2H
Manufacturing Method: ERW (Resistance welding), SMLS (seamless), LSAW (Longitudinally Submerged Arc Welding)
Shape: Rectangular, Square, Circle
Specification:
Rectangular pipe: size: 20*30-1500*1000mm wall thickness: 1.2-50mm
Square pipe: size: 20*20-1200*1200mm wall thickness: 1.3-50mm
Circle pipe: size: 1/2 - 24 inch wall thickness: 5-50mm
Length: 6m / 12m, also depend on requirements
Pipe End: flat end/ chamfer end/ groove/ thread
Coating: Black/ varnish/ 3PE/ galvanized/ fused epoxy coating
EN10210 is a harmonized European standard that specifies the technical delivery conditions for thermoformed structural hollow sections, including round, square and rectangular cross sections, both welded and seamless.
The EN10210 standard specifies the technical delivery conditions of non-alloy and fine-grained steel hot-rolled structural steel pipes, which are widely used in building structures, machinery manufacturing, automobile manufacturing, oil and gas fields, etc.
Chemical composition
| Unalloyed hollow section steel for steel structure | |||||||
| Analyze the chemical composition of products with nominal thickness ≤65mm | |||||||
| GRADE | COMPOSITION % MAX | ||||||
| C | Si | Mn | P | S | N | ||
| Nominal thickness≤40mm | 40mm＜Nominal thickness≤65mm | ||||||
| S235JRH | 0.17 | 0.20 | - | 1.40 | 0.045 | 0.045 | 0.009 |
| S275J0H | 0.20 | 0.22 | - | 1.50 | 0.040 | 0.040 | 0.009 |
| S275J2H | 0.20 | 0.22 | - | 1.50 | 0.035 | 0.035 | - |
| S355J0H | 0.22 | 0.22 | 0.55 | 1.60 | 0.040 | 0.040 | 0.009 |
| S355J2H | 0.22 | 0.22 | 0.55 | 1.60 | 0.035 | 0.035 | - |
The EN10210 standard strictly regulates the chemical composition of the steel pipe, which includes carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), nitrogen (N) and other elements. The content of these elements directly affects the mechanical properties and process properties of the steel pipe.
- Carbon (C) : Carbon is the main element that determines the strength and hardness of steel.
- Silicon (Si) : Silicon is mainly used as a deoxidizer in steel, which helps to improve the strength and hardness of steel.
- Manganese (Mn) : Manganese is an important element to improve the strength and hardness of steel, and also helps to eliminate the adverse effects of sulfur.
- Phosphorus (P) and sulfur (S) : Phosphorus and sulfur are harmful elements in steel, which will reduce the plasticity and toughness of steel. The EN10210 standard imposes strict limits on the content of these two elements.
- Nitrogen (N) : Nitrogen in steel may lead to aging phenomenon, affecting the performance of steel.
How to ensure that the chemical composition meets the standard requirements?
1. Melting analysis: In the production process, the steel pipe must be melted to ensure that its chemical composition meets the requirements of the EN10210 standard.
2. Finished product analysis: In addition to melting analysis, the chemical composition analysis of the finished steel pipe is also required to verify whether it meets the requirements of the standard.
3. Quality control: In the entire production process, it is necessary to strictly control the quality of raw materials, production process and final products to ensure the consistency and stability of chemical composition.
4. Test certificate: EN10210 standard requires a test certificate to prove that the chemical composition and mechanical properties of the steel pipe meet the standard requirements.
Physical requirement
| Mechanical properties of unalloyed steels | |||||
| GRADE | Yield strength | Tensile strength | |||
| Nominal thickness≤16 | 16＜Nominal thickness≤40 | 40＜Nominal thickness≤65 | Nominal thickness＜3 | 3≤Nominal thickness≤65 | |
| S235JRH | 235 | 225 | 215 | 360-510 | 340-470 |
| S275J0H | 275 | 265 | 255 | 430-580 | 410-560 |
| S275J2H | |||||
| S355J0H | 355 | 345 | 335 | 510-680 | 490-630 |
| S355J2H | |||||
Instructions
Yield Strength
Yield Strength is the maximum stress that a material can withstand before it becomes plastic. For metal materials, yield strength is an important mechanical property index, which marks the limit of material transformation from elastic deformation to plastic deformation.
On a stress-strain curve, the yield strength usually corresponds to a specific point on the curve, the yield point. For many metals, the yield point is a distinct feature that appears as an inflection point or plateau on a curve. At this point, the material begins to undergo plastic deformation, and the deformation continues even though the stress is no longer increasing.
Tensile Strength
Tensile Strength is the amount of stress a material is subjected to during a tensile test. It is an important mechanical property index to measure the resistance to tensile fracture of materials.
When a tensile test is performed, the material sample is stretched until it breaks. The tensile strength usually corresponds to the highest point on the stress-strain curve, indicating the maximum stress a material can withstand before breaking. When the tensile strength is reached, the material will break or be destroyed.
EN10210 Seamless pipe applications and advantages:
Application field
- Structural Engineering field:
EN10210 seamless steel pipes play an important role in structural engineering such as construction, Bridges, machinery and equipment. Its high strength and excellent weldability make it an ideal choice for structural components.
- Hydraulic system:
EN10210 seamless steel pipes are widely used in pipes and connectors in hydraulic systems. Its high precision and pressure resistance enable it to meet the needs of high-pressure liquid transport.
- Oil and Gas Industry:
EN10210 seamless steel tubes are used in pipeline systems for transporting oil and gas in the oil and gas industry. Its corrosion resistance and high sealing properties make it the first choice for these industries.
- Heat exchangers and boilers:
EN10210 seamless steel tubes are widely used in heat exchangers and boilers for the transfer of high temperature fluids. Its high temperature and pressure resistance enables it to meet the needs of these special working conditions.
advantage
- High strength:
The EN10210 standard seamless steel pipe material has high strength and can withstand greater pressure and heavy loads.
- Good weldability:
The EN10210 standard seamless steel pipe material has good weldability and is easy to manufacture and install.
- Corrosion resistance:
EN10210 standard seamless steel pipes are made of corrosion-resistant materials and can be used in harsh environments for a long time.
- High precision:
The EN10210 standard seamless steel pipe has strict size and geometry control, with high precision and stability.
- Good mechanical properties:
EN10210 seamless steel pipe has good toughness and reliable mechanical properties, which can meet the needs of various working conditions.
What are the advantages of EN10210 pipe compared with other materials?
1. High strength:
The EN10210 standard seamless steel pipe material has high strength and can withstand greater pressure and heavy loads.
2. Good weldability:
The EN10210 standard seamless steel pipe material has good weldability and is easy to manufacture and install.
3. Corrosion resistance:
EN10210 standard seamless steel pipes are made of corrosion-resistant materials and can be used in harsh environments for a long time.
4. High precision:
The EN10210 standard seamless steel pipe has strict size and geometry control, with high precision and stability.
5. Good mechanical properties:
EN10210 seamless steel pipe has good toughness and reliable mechanical properties, which can meet the needs of various working conditions.
6. Widely used:
EN10210 seamless steel pipes are widely used in structural engineering, hydraulic systems, the oil and gas industry, as well as in heat exchangers and boilers. Its corrosion resistance and high sealing properties make it the first choice for these industries..
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