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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.
- Details
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The following is a detailed introduction to the EN10217 standard Hollow Section, analyzed in combination with the technical requirements, material advantages, application scenarios and steel grade differences of the standard:
1. Overview of EN10217 Standard
EN10217 is the EU standard for technical delivery conditions of welded steel pipes for pressure applications, covering a wide range of materials and uses. Hollow Section mainly refers to welded steel pipes with circular, square or rectangular cross-sections, which need to meet strict requirements for pressure vessels and structural components. The standard is divided into multiple parts, among which:
- EN10217-1: Non-alloy steel for room temperature use.
- EN10217-5: Non-alloy and alloy steels for high temperatures (such as P235GH, P265GH).
- EN10217-7: Stainless steel (such as 1.4401/316L).
2. Core advantages
Core advantages
The core advantage of EN10217 hollow profiles lies in its strict production process and comprehensive performance guarantee:
High safety:
Through non-destructive testing (ultrasonic, eddy current, etc.) and sealing tests (water pressure/eddy current), it ensures no defects.
01
Corrosion resistance (stainless steel part)：
Such as 316L (1.4404) containing molybdenum (2-2.5%), resistant to acidic media and chloride corrosion.
02
High/Low temperature adaptability:
High-temperature steels (such as P265GH and 16Mo3) can maintain their strength above 500°C.
Stainless steel (such as 316L) has excellent low-temperature toughness (applicable at -196°C).
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Dimensional accuracy
The tolerance grades (such as D2/T2, D3/T3) are strictly controlled and are suitable for precision structures.
3. Main application fields
Application Industry Typical Scenarios Appliable Steel-grade Examples Energy And Electricity Boiler Pipelines, Heat Exchangers, Steam Pipelines P235GH, P265GH, 16Mo3 Architucture And Structural Load-bearing Frames, Bridge Components S235JR, S355J2H (structural steel) 4. Specific steel grades and their differences
The EN10217 standard covers carbon steel, alloy steel and stainless steel. The composition and properties of different steel grades are designed for specific working conditions.
4.1 Non-alloy steel and alloy Steel (EN10217-1/5)
Grades Characteristics Applicable Scene Key Differences P235GH Low Strength And High Ductility (RP0.2≥235MPa) Low-temperature Pressure Vessels, Boilers Low Cost And Good Weldability P265GH Moderate To High Intensity (RP0.2≥265MPa) High-temperature Pressure Vessels (≤450°C) The High-temperature Yield Strength Is Superior To P235GH 16Mo3 Molybdenum Alloy (0.25-0.35% Mo) Power Station Boilers (500-600°C) It Has The Best Creep Resistance And High-temperature Oxidation Resistance
Conclusion
EN10217 hollow profiles, through material classification design (from economical carbon steel to highly corrosion-resistant stainless steel) and strict quality control (non-destructive testing + process specifications), have become the ideal choice for high-pressure, corrosive, high/low temperature environments.
Its core value lies in:
① Safety (extremely low risk of leakage);
② Life cost ratio (high corrosion resistance reduces replacement);
③ Adaptability (covering operating conditions from -196°C to 600°C).
When selecting the type, the corrosiveness of the medium, temperature and cost should be comprehensively considered. Priority should be given to matching the characteristics of steel grades (for example, 316L for chemical industry and 16Mo3 for power stations).
EN10217 HOLLOW SECTION
Subcategory
Keyword
- Details
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The following is a detailed introduction to the EN10217 standard Hollow Section, analyzed in combination with the technical requirements, material advantages, application scenarios and steel grade differences of the standard:
1. Overview of EN10217 Standard
EN10217 is the EU standard for technical delivery conditions of welded steel pipes for pressure applications, covering a wide range of materials and uses. Hollow Section mainly refers to welded steel pipes with circular, square or rectangular cross-sections, which need to meet strict requirements for pressure vessels and structural components. The standard is divided into multiple parts, among which:
- EN10217-1: Non-alloy steel for room temperature use.
- EN10217-5: Non-alloy and alloy steels for high temperatures (such as P235GH, P265GH).
- EN10217-7: Stainless steel (such as 1.4401/316L).
2. Core advantages
Core advantages
The core advantage of EN10217 hollow profiles lies in its strict production process and comprehensive performance guarantee:
High safety:
Through non-destructive testing (ultrasonic, eddy current, etc.) and sealing tests (water pressure/eddy current), it ensures no defects.
01
Corrosion resistance (stainless steel part)：
Such as 316L (1.4404) containing molybdenum (2-2.5%), resistant to acidic media and chloride corrosion.
02
High/Low temperature adaptability:
High-temperature steels (such as P265GH and 16Mo3) can maintain their strength above 500°C.
Stainless steel (such as 316L) has excellent low-temperature toughness (applicable at -196°C).
03
Dimensional accuracy
The tolerance grades (such as D2/T2, D3/T3) are strictly controlled and are suitable for precision structures.
3. Main application fields
Application Industry Typical Scenarios Appliable Steel-grade Examples Energy And Electricity Boiler Pipelines, Heat Exchangers, Steam Pipelines P235GH, P265GH, 16Mo3 Architucture And Structural Load-bearing Frames, Bridge Components S235JR, S355J2H (structural steel) 4. Specific steel grades and their differences
The EN10217 standard covers carbon steel, alloy steel and stainless steel. The composition and properties of different steel grades are designed for specific working conditions.
4.1 Non-alloy steel and alloy Steel (EN10217-1/5)
Grades Characteristics Applicable Scene Key Differences P235GH Low Strength And High Ductility (RP0.2≥235MPa) Low-temperature Pressure Vessels, Boilers Low Cost And Good Weldability P265GH Moderate To High Intensity (RP0.2≥265MPa) High-temperature Pressure Vessels (≤450°C) The High-temperature Yield Strength Is Superior To P235GH 16Mo3 Molybdenum Alloy (0.25-0.35% Mo) Power Station Boilers (500-600°C) It Has The Best Creep Resistance And High-temperature Oxidation Resistance
Conclusion
EN10217 hollow profiles, through material classification design (from economical carbon steel to highly corrosion-resistant stainless steel) and strict quality control (non-destructive testing + process specifications), have become the ideal choice for high-pressure, corrosive, high/low temperature environments.
Its core value lies in:
① Safety (extremely low risk of leakage);
② Life cost ratio (high corrosion resistance reduces replacement);
③ Adaptability (covering operating conditions from -196°C to 600°C).
When selecting the type, the corrosiveness of the medium, temperature and cost should be comprehensively considered. Priority should be given to matching the characteristics of steel grades (for example, 316L for chemical industry and 16Mo3 for power stations).
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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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