High Quality Hot-rolled Steel Coil Black Steel Coil S235 S355 SS400 Carbon Steel Coil

Short Description:

Hot rolled steel coil refers to the pressing of billets into the desired thickness of steel at high temperatures. In hot rolling, steel is rolled after being heated to a plastic state, and the surface may be oxidized and rough. Hot rolled coils usually have large dimensional tolerances and low strength and hardness, and are suitable for construction structures, mechanical components in manufacturing, pipes and containers.

Inspection: SGS, TUV, BV, Factory Inspection

Grade: Carbon steel

Material: 60, 65Mn, 55Si2Mn, 60Si2MnA, 50CrVA,

Technique: Hot Rolled

Width: 600-4050mm

Tolerance: ±3%, +/-2mm Width: +/-2mm

Advantage: Accurate Dimension

Delivery Time: 3-15 days (according to the actual tonnage)

Port Information: Tianjin Port, Shanghai Port, Qingdao Port, etc.

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Product Detail

Product Tags

Product Detail

Product Name	Hotselling Best Quality A Large Amount Hot Rolled Steel Coil
Material	Q195/Q235/Q345/A36/S235JR/S355JR
Thickness	1.5mm~24mm
Size	3x1219mm 3.5x1500mm 4x1600mm 4.5x2438mm customized
Standard	ASTM A53-2007, ASTM A671-2006, ASTM A252-1998, ASTM A450-1996, ASME B36.10M-2004, ASTM A523-1996, BS 1387, BS EN10296, BS
	6323, BS 6363, BS EN10219, GB/T 3091-2001, GB/T 13793-1992, GB/T9711
Grade	A53-A369, Q195-Q345, ST35-ST52
	Grade A, Grade B, Grade C
Technique	Hot rolled
Packing	Bundle, or with all kinds of colors PVC or as your requirements
Pipe Ends	Plain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded and coupling,etc.
MOQ	1 Tons, more quantity price will be lower
Surface Treatment	1. Mill finished /Galvanized /stainless steel
	2. PVC,Black and color painting
	3. Transparent oil,anti-rust oil
	4. According to clients requirement
Product Application	1. Manufacturing of building structures,
	2. lifting machinery,
	3. engineering,
	4. agricultural and construction machinery,
Origin	Tianjin China
Certificates	ISO9001-2008,SGS.BV,TUV
Delivery Time	Usually within 10-15 days after receipt of advance payment

Main Application

1.Fluid / Gas delivery, Steel structure, Construction;
2.ROYAL GROUP ERW/Welded round carbon steel pipes, which with Highest quality and strong supply ability are widely used in Steel structure and Construction.

Note:
1.Free sampling, 100% after-sales quality assurance, Support any payment method;
2.All other specifications of round carbon steel pipes are available according to your requirement (OEM&ODM)! Factory price you will get from ROYAL GROUP.

Size Chart

Thickness(mm)	3	3.5	4	4.5	5	5.5	customized
Width(mm)	800	900	950	1000	1219	1000	customized

Process of production

Billet Preparation: Continuously cast billets or blooms are used as raw material. After inspection and removal of surface defects, the billets are heated in a heating furnace to 1100-1250°C, reaching the temperature required for plastic deformation.

Roughing: The heated billets enter the roughing mill, where they undergo multiple passes (usually 3-7) to reduce the thickness from 150-300mm to 20-50mm. The width is also adjusted to form intermediate billets.

Finishing: After dephosphorization (to remove surface scale), the intermediate billets enter the finishing mill, where they undergo further high-temperature rolling (usually 5-7 passes) to further reduce the thickness to 1.2-25.4mm (depending on the product specification). Rolling speed and temperature are controlled to ensure that the steel meets the required grain refinement and mechanical properties.

Coiling: After finish rolling, the strip is rapidly cooled to a set temperature (typically 500-700°C) via a laminar cooling system. It is then coiled into a coil by a coiler, completing the hot-rolled coil formation process.

Inspection and Processing: Finished coils undergo dimensional inspection, mechanical property testing, and surface quality inspection. Once qualified, they are bundled, labeled, and finally stored or shipped.