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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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Brief introduction
EN 10210 S235JRH HOLLOW SECTION
Standard: EN 10210
Grade: S235JRH, S275J0H, S275J2H, S355J0H, S355J2H
Outside diameter: 20-660mm Wall Thickness:1.3-16mm
Outside diameter: 20*20-1200*1200mm Wall Thickness: 1.3-50mm
Outside diameter: 20*30-1500*1200mm Wall Thickness: 1.2-50mm
The Wall Thickness Tolerance: ±5%
Length: normally 5.8m, 6m, 12m or as your required
Surface Treatment: Bare Finish, Painting, Oiling, Galvanzation, 3PE, FBE coated......
Chemical composition
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
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
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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
Detailed information
Manufacturing process:
Seamless, electric welding (ERW, EFW) and submerged arc welding (LSAW, SSAW, DSAW) are allowed.
Delivery conditions:
Hot rolled (hot-finished), that is, the hollow structure can be hot formed, or it can be cold formed after heat treatment above 580℃.
Coating:
EN 10210 hollow structural steels are typically coated with a variety of coatings, such as paint, galvanized, 3LPE, 3LPP, FBE and HDPE, to improve durability and anti-corrosion properties.
Application:
EN 10210 S235JRH is suitable for construction structures, industrial equipment manufacturing, infrastructure works (e.g. Bridges and towers), Marine engineering structures, etc., mainly for structural components subjected to static or dynamic loads.
Peculiarity
Uniformity: The mechanical properties of EN 10210 hollow structural steel are uniform throughout the section, including corners and weld lines, and are superior to cold-formed sections.
High ductility: EN 10210 has a higher ductility than cold-formed hollow structural steels, making it suitable for applications that withstand cyclic loads or require fatigue resistance.
Resistance to breakage: With almost no residual stress, EN 10210 hollow structural steel is more resistant to breakage and is suitable for use in harsh conditions.
Buckling strength: The buckling strength of EN 10210 can be increased by up to 35% compared to the cold-formed section.
Dimensional stability: EN 10210 hollow structural steel is not easily deformed during cutting, welding or other manufacturing processes, while cold-formed sections are more prone to deformation due to higher residual stress.
Fire resistance: The performance of EN 10210 hollow structural steel is consistent and reliable in the event of fire, while the cold-formed section may suddenly lose its yield strength when heated.
Galvanizability: The silicon content of EN 10210 hollow structural steel is well controlled to ensure good galvanizing properties, thus providing additional protection against corrosion.
Fully quenched steel: Made using only normalizing, fine-grained steel, EN 10210 hollow structural steel is completely stress-free and has uniform mechanical properties and better weldability.
EN 10210 S235JRH HOLLOW SECTION
Subcategory
Keyword
- Details
-
Brief introduction
EN 10210 S235JRH HOLLOW SECTION
Standard: EN 10210
Grade: S235JRH, S275J0H, S275J2H, S355J0H, S355J2H
Outside diameter: 20-660mm Wall Thickness:1.3-16mm
Outside diameter: 20*20-1200*1200mm Wall Thickness: 1.3-50mm
Outside diameter: 20*30-1500*1200mm Wall Thickness: 1.2-50mm
The Wall Thickness Tolerance: ±5%
Length: normally 5.8m, 6m, 12m or as your required
Surface Treatment: Bare Finish, Painting, Oiling, Galvanzation, 3PE, FBE coated......
Chemical composition
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
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
-
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
Detailed information
Manufacturing process:
Seamless, electric welding (ERW, EFW) and submerged arc welding (LSAW, SSAW, DSAW) are allowed.
Delivery conditions:
Hot rolled (hot-finished), that is, the hollow structure can be hot formed, or it can be cold formed after heat treatment above 580℃.
Coating:
EN 10210 hollow structural steels are typically coated with a variety of coatings, such as paint, galvanized, 3LPE, 3LPP, FBE and HDPE, to improve durability and anti-corrosion properties.
Application:
EN 10210 S235JRH is suitable for construction structures, industrial equipment manufacturing, infrastructure works (e.g. Bridges and towers), Marine engineering structures, etc., mainly for structural components subjected to static or dynamic loads.
Peculiarity
Uniformity: The mechanical properties of EN 10210 hollow structural steel are uniform throughout the section, including corners and weld lines, and are superior to cold-formed sections.
High ductility: EN 10210 has a higher ductility than cold-formed hollow structural steels, making it suitable for applications that withstand cyclic loads or require fatigue resistance.
Resistance to breakage: With almost no residual stress, EN 10210 hollow structural steel is more resistant to breakage and is suitable for use in harsh conditions.
Buckling strength: The buckling strength of EN 10210 can be increased by up to 35% compared to the cold-formed section.
Dimensional stability: EN 10210 hollow structural steel is not easily deformed during cutting, welding or other manufacturing processes, while cold-formed sections are more prone to deformation due to higher residual stress.
Fire resistance: The performance of EN 10210 hollow structural steel is consistent and reliable in the event of fire, while the cold-formed section may suddenly lose its yield strength when heated.
Galvanizability: The silicon content of EN 10210 hollow structural steel is well controlled to ensure good galvanizing properties, thus providing additional protection against corrosion.
Fully quenched steel: Made using only normalizing, fine-grained steel, EN 10210 hollow structural steel is completely stress-free and has uniform mechanical properties and better weldability.
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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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