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About us
Tianjin lefin Industrial
TIANJIN LEFIN STEEL GROUP containing Tianjin lefin Industrial Co.,Ltd. 、Tianjin lefin steel import & export Co.,Ltd and Tianjin Shengqifeng International Trading Co., Ltd. -
Products
Steel Pipe Processing
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard -
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Service Capability
Guarantee Quality
Our steel pipes are suitable for oil, natural gas, shipbuilding, chemical industry, water conservancy, electrical, steel structure, construction and other related fields.
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard
Has rich experience in steel pipe processing, can be customized according to customer requirements according to the drawing and sample processing, assist in the development of new products.
Moldova EN 10210 S355J2H HOLLOW SECTION
Category:
Product Description
Basic Information
Standard: EN 10210
Steel Grade: S235JRH, S275JOH, S275J2H, S355JOH, S355J2H, S355K2H, S355NH, S460NH
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
EN 10210 is a European harmonized standard for the technical delivery conditions of hollow profiles for thermoformed structures, including round, square and rectangular cross sections, both welded and seamless.
Physical requirement
Unalloyed hollow section steel for steel structure | |||||||
Analyze the melting chemical composition of products with thickness ≤65mm | |||||||
GRADE | COMPOSITION % MAX | ||||||
C | Si | Mn | P | S | N | ||
Nominal thickness≤40mm | 40mm＜Nominal thickness≤65mm | ||||||
S355J2H | 0.22 | 0.22 | 0.55 | 1.60 | 0.035 | 0.035 | - |
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.
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.
Chemical composition
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 | |
S355J2H | 355 | 345 | 335 | 510-680 | 490-630 |
- Carbon (C) :Carbon is the main element that affects the strength and hardness of steel. With the increase of carbon content, the yield point and tensile strength increase, but the plasticity and impact properties decrease. High carbon content is easy to cause unqualified intergranular corrosion.
- Silicon (Si) :Silicon, as a deoxidizer and desulfurizer, helps to improve the strength and hardness of steel, while improving the thermal processing properties of steel.
- Manganese (Mn) :Manganese is an important austenitic stabilizing element that contributes to the formation of texture, increasing firmness and strength and abrasion resistance. Internal deoxidation of steel during heat treatment and rolling.
- Phosphorus (P) :Phosphorus is generally regarded as a harmful element, which will increase the cold brittleness of steel, reduce plasticity, and affect the weldability and cold bending properties. Therefore, the content of phosphorus should be controlled below 0.05%.
- Sulfur(S):Sulfur is also a harmful element that causes hot brittleness in steel, reduces ductility and toughness, easily causes cracks during forging and rolling, and also reduces corrosion resistance of steel. The sulfur content should be kept as low as possible.
Application
The EN10210 standard is widely used in many industries:
1. Construction industry:
EN10210 standard steel pipes play an important role in structural applications in the construction industry, including as structural components such as columns, supports and Bridges.
2. Bridge construction:
Because of their high strength and superior fatigue resistance, these steel pipes are well suited for use in bridge structures, especially in heavy loads and truss designs.
3. High-rise buildings:
EN10210 steel pipes are used in tall buildings for columns, beams and other major structural elements, where the strength-to-weight ratio is critical.
4. Offshore structure:
The excellent toughness and corrosion resistance of steel pipes make them suitable for offshore oil and gas platforms, wind turbines and other Marine structures.
5. Heavy industrial equipment:
In heavy machinery such as cranes and excavators, these steel pipes are used for their ability to withstand high stresses and dynamic loads.
6. Power transmission tower:
Combined with strength and lightweight properties, EN10210 steel pipes are also ideal for power transmission towers, especially in areas vulnerable to extreme weather conditions.
7. Sports venues:
In large span roof structures and support frames, EN10210 steel pipes are widely used for their strength and aesthetics.
8. Hangar:
EN10210 steel pipes are often used in structural frames due to the need for large spans of clear space in hangar design.
Application advantages of EN10210 standard in the construction industry
1. High strength and excellent weldability:
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.
2. High precision and pressure resistance:
This standard steel pipe is widely used in pipes and connectors in hydraulic systems, and its high precision and pressure resistance enable it to meet the needs of high-pressure liquid transmission.
3. Corrosion resistance and high sealing performance:
In the oil and gas industry, EN10210 standard seamless steel pipes are used in pipeline systems for transporting oil and gas, and their corrosion resistance and high sealing properties make them the first choice in these industries.
4. High temperature and pressure resistance:
This standard seamless steel pipe is 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.
5. Meet strict European standards:
The EN10210 standard ensures the quality and safety of steel pipes and provides a reliable material support for the construction industry.
6. Quality consistency and safety provisions:
This standard guarantees consistency in product quality and compliance with building and engineering safety standards, ensuring reliability and safety in structural applications.
7. Applicable to various machine parts and frames:
This steel is versatile and can be used in a variety of machine parts and frames for which precise mechanical properties are essential.
8. Durability and weather resistance:
The S235JR hollow profile is designed to withstand a variety of environmental conditions and is suitable for outdoor applications where exposure to the weather is a concern. Its characteristics ensure long service life and safety.
Address: Hengtai Road,Daqiuzhuang Town,Jinghai County,Tianjin,China
Mob: +8615122229899(whatspp)
Phone: +86 22 58171905
Fax: +86 22 58171902
E-mail:info@lefinsteel.com
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