Shape:round square rectangular shaped
Dimensions: Customizable
Square:10*10-1200*1200mm
Rectangular:10*15-800*1200mm
Circular:10.3-2000mm
W.T.: 0.5-60mm
Length:0.5-24m or custmized
Grade：Gr.A,Gr.B,Gr.C,S235/275/355/420/460,,ss400,stkr400/490,Q195/235/355,etc
Standard：En 10219
Surface Treatment：Bare,oil,painted,galvanized,etc.
MOQ:2-5 Tons
Capacity: 5 million tons / year
Packaging:PVC package or follow your needs
Port of origin:Tianjin Port
Payment：TT/LC,etc
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Industry experience
Quality en 10219 steel tube manufacturers
Yuantai Derun was a large en 10219 steel pipe suppliers
Our main en 10219 tube products include en 10219 square hollow section, en 10219 rectangular hollow section,en 10219 circular hollow section,en 10219 shaped tube. What’s more, we have various kinds of steel pipes.We believe there will always be one for you.
High Production Capacity
High Precision
High Quality
High Efficiency
1. Strong: The hollow section design provides excellent strength while being light. It is suitable for a variety of load-bearing needs.
2. Stable: Its structural characteristics enable it to withstand large bending moments and shear forces, ensuring structural stability.
3. Light: Compared with solid cross section, hollow cross section greatly reduces the weight of the material, which helps to save energy and improve transport efficiency.
4. Easy to process: The cold forming process makes this material easy to work with, which improves construction efficiency.
1. S275J0H: Yield strength (N/mm2) Min or Min/Max T≦16 275 16＜T 265;Tensile strength (N/mm2) Min or Min/Max T＜3 430/580
3≦T 410/560
Elongation 1) (%) Min 20; Charpy absorption energy (J) Min 27(-20℃)
chemical position:C
(%)
Max 0.20 Si
(%)
Max - Mn
(%)
Max 1.50 P (%)
Max 0.040 S
(%)
Max 0.040 N
(%)
Max 0.009 Ceq or Cev 2)
(%)
Max 0.40
2. S275J2H: Yield strength (N/mm2) Min or Min/Max T≦16 275 16＜T 265;Tensile strength (N/mm2) Min or Min/Max T＜3 430/580 3≦T 410/560
Elongation 1) (%) Min 20; Charpy absorption energy (J) Min 27(0℃)
chemical position:C (%) Max 0.20 Si (%) Max - Mn (%) Max 1.50 P (%) Max 0.040 S (%) Max 0.035 N (%) Max - Ceq or Cev 2) (%) Max 0.40
3. S355J0H: Yield strength (N/mm2) Min or Min/Max T≦16 355 16＜T 345;
Tensile strength (N/mm2) Min or Min/Max
T＜3 510/680 3≦T 470/630
Elongation 1) (%) Min 20;
Charpy absorption energy (J) Min 27(0℃)
chemical position:C (%) Max 0.22 Si (%) Max 0.55 Mn (%) Max 1.60 P (%) Max 0.040 S (%) Max 0.040 N (%) Max 0.009 Ceq or Cev 2) (%) Max 0.45
4. S355J2H: Yield strength (N/mm2) Min or Min/Max T≦16 355 16＜T 345;
Tensile strength (N/mm2) Min or Min/Max
T＜3 510/680 3≦T 470/630
Elongation 1) (%) Min 20;
Charpy absorption energy (J) Min 27(-20℃)
chemical position:C (%) Max 0.22 Si (%) Max 0.55 Mn (%) Max 1.60 P (%) Max 0.035 S (%) Max 0.035 N (%) Max - Ceq or Cev 2) (%) Max 0.45
5. S355K2H: Yield strength (N/mm2) Min or Min/Max T≦16 355 16＜T 345;
Tensile strength (N/mm2) Min or Min/Max
T＜3 510/680 3≦T 470/630
Elongation 1) (%) Min 20;
Charpy absorption energy (J) Min 40(-20℃)
chemical position:C (%) Max 0.22 Si (%) Max 0.55 Mn (%) Max 1.60 P (%) Max 0.035 S (%) Max 0.035 N (%) Max - Ceq or Cev 2) (%) Max 0.45
EN10219 steel structural hollow sections are used in buildings because they are strong, light and easy to work with. They can be used in load-bearing structures such as beams, columns and trusses to provide stable support and reliable load-bearing capacity.
Marine engineering also uses EN10219 steel structural hollow sections. The marine environment is complex and changeable, so materials must be strong and resistant to corrosion. This hollow section structure meets the requirements and is used in marine platforms.
In the field of construction machinery, EN10219 steel structural hollow sections are also widely used. They can be used to manufacture support structures, frames, etc. for various mechanical equipment, providing stable support and reliable load-bearing capacity.
There are several main methods for manufacturing hollow sections of EN10219 steel pipes. The main process steps are:
Cold forming process:
Select steel plate or strip that meets EN10219 standard as raw material.
Bending and forming: Bend the steel plate or strip into the desired cross-section shape, such as round, square or rectangular, by means of a cold bending machine.
Welding: The bent steel is welded to form a hollow section.
Inspection: The finished hollow section is checked to ensure it meets the standards.
The hot rolling process is a common manufacturing method for steel tubes.
Process steps (brief description, as EN10219 is mainly concerned with cold forming):
The billet is heated to be rolled hot.
Piercing: The heated billet is pierced into a tube by a piercing machine.
Rolling: The tube is rolled to the right shape using a rolling mill.
The tube is cooled and straightened.
The EN 10219 standard focuses on cold forming because it controls dimensions better and gives a better surface. The cold forming process also lets us make improvements to the tubes' mechanical properties and durability.
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