Hot rolled steel coil and steel sheet are fundamental products in the steel industry, widely used across various sectors due to their versatility and cost-effectiveness. Here’s a detailed overview based on the latest industry insights and technical specifications:

1. Manufacturing Process

Both products start with steel slabs heated to 1,000–1,200°C and rolled into thinner forms. Hot rolled coils are continuously rolled into coiled strips, while sheets are cut into flat, rectangular pieces from the coils . Key steps include:
  • Heating: Slabs are heated in a furnace to reduce deformation resistance.
  • Rolling: Passed through roughing mills and finishing mills to achieve desired thickness.
  • Cooling: Rapid cooling via laminar cooling controls microstructure and properties .
  • Coiling: Coils are wound for storage/transport; sheets undergo cutting and trimming .
Aspect Hot Rolled Coil Hot Rolled Sheet
Form Continuous roll (e.g., 5–25 tons per coil) Flat, cut-to-size pieces (e.g., 1–240″ length)
Surface Finish Oxidized scale (requires Pickled /oiled for better appearance) Similar to coil but often further processed (e.g., Straighten)
Applications Pipes, automotive frames, construction equipment Structural components, machinery parts, pressure vessels
Thickness Range Typically 1.2–25 mm 2.0–200 mm

Mechanical Properties

  • Strength: Hot rolled steel offers moderate tensile strength (e.g., 310–550 MPa for structural grades) but excels in ductility and formability .
  • Weldability: Generally good, making it suitable for fabrication .
  • Surface Quality: Rougher than cold-rolled products due to oxide scale, but ideal for applications where aesthetics are secondary

Hot Rolled Coil’s Application

  • Construction: Metal buildings, beams, and columns .
  • Automotive: Truck frames, wheel rims, and chassis components .
  • Industrial: Pipe manufacturing, material handling equipment .

Hot Rolled Sheet’s Application

  • Machinery: Structural parts, gears, and shafts .
  • Energy: Pressure vessels and pipelines .
  • Transportation: Shipbuilding and railway components .

Hot rolled steel coil and sheet are cornerstones of modern industry, valued for their strength, versatility, and cost efficiency. While coils dominate in high-volume, continuous applications, sheets excel in precision-driven projects. With evolving standards and sustainability initiatives, the industry continues to optimize production processes, balancing performance with environmental responsibility. Whether for construction, automotive, or industrial use, these products remain indispensable in shaping global infrastructure and manufacturing.

On April 28, 2025, the Ministry of Industry and Trade (MOIT) of Vietnam announced its decision to amend the temporary anti-dumping (AD) duties determined in its preliminary ruling on certain hot-rolled steel products from China and India. After the amendment, the provisional AD duty rate for China remains in a range from 19.38% 27.83%, while Win Faith Trading Limited is listed to the specific related trading company subject to a 27.83% duty rate.

The products involved are classified under HS codes 7208.25.00, 7208.26.00, 7208.27.19, 7208.27.99, 7208.36.00, 7208.37.00, 7208.38.00, 7208.39.20, 7208.39.40, 7208.39.90, 7208.51.00, 7208.52.00, 7208.53.00, 7208.54.90, 7208.90.90, 7211.14.15, 7211.14.16, 7211.14.19, 7211.19.13, 7211.19.19, 7211.90.12, 7211.90.19, 7225.30.90, 7225.40.90, 7225.99.90, 7226.91.10, and 7226.91.90.

Post time: May-21-2025

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