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S235jr S355jr Hot Rolled Steel Coil
Production technology and process
Raw material preparation: Select raw materials that meet the requirements, such as molten iron, molten iron for steelmaking and other additives.
Steelmaking: Put the raw materials into the steelmaking furnace for smelting, and control the parameters such as temperature, composition and atmosphere in the furnace.
Continuous casting: The molten steel is continuously cast through the continuous casting machine to form billets.
Finishing: The billets are subjected to surface cleaning, cutting, diameter reduction, flaw detection and other treatments.
Hot rolling: The finished billets are sent to the hot rolling unit for pressing.
Rolling mill cooling: Rapidly reduce the temperature of the steel plate to achieve the target mechanical properties.
Steel plate surface treatment: Pickling, quenching or shot peening are performed to improve the surface quality and corrosion resistance.
Steel plate surface treatment: Pickling, quenching or shot peening are performed to improve the surface quality and corrosion resistance.
Inspection and packaging: The produced steel plates are inspected, and they are classified, packaged and marked after passing the inspection.
Core performance advantage analysis
1. Material characteristics highlights
High strength and light weight: S355JR is 51% stronger than S235JR, and can achieve a structural design with a weight reduction of 20%-30%.
Excellent formability: The elongation is up to 26%, suitable for stamping, bending and other processing techniques.
Welding compatibility: C content ≤ 0.22%, conventional welding operations can be performed without preheating.
2. Professional testing and certification
Passed ISO 9001 quality management system certification
Provide third-party test reports (SGS/BV/TUV)
Comply with CE/PED Pressure Equipment Directive requirements
Application
Uses of S235JR
Construction field: hot rolled steel in coil is S235JR used for beams, columns, frames and other components of building structures, such as high-rise buildings, large factories, stadiums, etc.
Machinery manufacturing: suitable for load-bearing structures, machinery manufacturing and structures under low-temperature conditions, such as lifting mechanisms, conveying equipment, etc.
Other projects: hot rolled coil S235JR is used for mining machinery, metallurgical equipment, engineering machinery parts, etc.
Uses of S355JR
Construction field: hot rolled coil steel S355JR used in the construction of high-rise buildings, large factories, stadiums, etc., meeting the requirements of high strength and durability.
Bridge engineering: suitable for the main beams, piers, bridge supports and other parts of the bridge, which can meet the requirements of the bridge for steel strength and durability.
Heavy machinery and engineering: hot rolled carbon steel coil S355JR used in tower cranes, runways, petrochemical equipment and other occasions that require high-strength support.
Why choose hot rolled coil S235JR and S355JR?
In the field of industrial manufacturing and construction, material selection directly affects project cost, safety and construction efficiency.
As star products under the EN 10025 standard, S235JR and S355JR hot rolled steel sheet in coil has become the preferred solution for engineers around the world with their unique performance combination and supply chain advantages.
1. International standard certification, quality traceability
2. Golden balance of strength and ductility
3. Full-scenario processing adaptability
4. Full life cycle cost optimization
5. Sustainable procurement solutions
Quotation Questions ◢
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Q.
How to choose between the two materials?
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Q.
Do you provide processing services?
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Q.
How to ensure the authenticity of the materials?
A.Each batch comes with a material certificate and supports third-party re-inspection.
Interested?
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