Wholesale High Quality Carbon Steel Coil Q235 Q275 Q355 High Quality Carbon Steel Coil Manufacturer and Supplier

High Quality Carbon Steel Coil Q235 Q275 Q355 High Quality Carbon Steel Coil

Short Description:

Q235, Q275, and Q355 carbon steel coils are widely used structural steel materials with excellent strength, weldability, and formability. They are produced in accordance with GB/T standards and are suitable for a wide range of construction and industrial applications.

These carbon steel coils are widely applied in building structures, bridges, machinery manufacturing, steel fabrication, and infrastructure projects.

As a professional supplier, Royal Steel Group provides high-quality carbon steel coils with stable performance, competitive pricing, and global export support.

Inspection: SGS, TUV, BV, Factory Inspection

Standard: ASTM

Grade: Carbon steel

Model Number: A36,Ss400,Q235,Q345,St37,S235jr,S355jr

Technique: Hot Rolled

Thickness: 0.35 - 200mm

Width: ≥600mm，1000mm -2500mm

Tolerance: ±3%, +/-2mm Width: +/-2mm

Payment term: TT

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

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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/Q345A36/S235JR/S355JR
Thickness	0.35 - 200mm
Width	Width must be ≥ 600mm. Typically, the width ranges from 1000mm to 2500mm, with 6000mm being the most common length.
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 ,such as: A36 , SS400 , A572 Gr.50 ,Q195, Q215, Q235, Q345, S355JR
	Grade A, Grade B, Grade C
Technique	Hot rolled
Packing	Bundle, or with all kinds of colors PVC or as your requirements

Key specifications
KS	SS275, SS315, SS410, SS450, SM275A/B, SM355A/B/C/D, SM420A/B/C/D
JIS	SS330, SS400, SS490, SS540, SM400A/B, SM490A/B/C, SM490YA/YB, SM520B, SN400B, SN490B
ASTM	A36, A283-C, A1011CS Type B, A1011SS Gr.33, A1011SS Gr.40, A1011HS Gr.50, A1011HS Gr.55, A1018HS Gr.50, A1018SS Gr.36 Type2
EN	S235JR, S275JR/J0/J2, S355JR/J0/J2

Hot Rolled Coils

Thickness	0.35 - 200mm
Width	≥600mm，1000mm -2500mm
Grades	Re-rolling/ Drawing Grades, Tube and Pipe/ Forming Grades, Structural/ Medium Tensile Tube/ Forming Grades, LPG/ Low Pressure Vessel Grades, HSLA Grades, Medium Carbon Grades, Weather Resistance Grades, Line Pipe Grades, Chequered Plates

Hot Rolled - Pickled & Oiled (HRPO)

Thickness	1.6 - 6.0mm
Width	1650mm

Hot Rolled - Skin Pass Pickled & Oiled (HRSPO)

Thickness	1.6 - 2.6mm
Width	1650mm

Main Application

1. Applications
Widely used for fluid and gas transportation, steel structures, and construction engineering projects.

2. Product Features & Advantages
ROYAL GROUP ERW (Electric Resistance Welded) round carbon steel pipes feature high strength, stable quality, and reliable performance. With strong production capacity and consistent supply ability, they are widely used in steel structure systems, building construction, and industrial applications requiring durable and cost-effective steel pipe solutions.

Note:
1.Free gift, 100% after-sale quality assurance,Support any payment way; 2.All other specifications of round carbon steel pipes can be made as your requirements ( OEM&ODM )! You will get the factory price 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

The production process begins with molten iron desulfurization using magnesium-based treatment, followed by top and bottom blown converter steelmaking to ensure stable composition and high purity.

The molten steel then undergoes alloying, LF (ladle furnace) refining, calcium wire feeding, and soft blowing treatment, significantly improving cleanliness, toughness, and overall mechanical performance.

After refining, the steel is processed through medium-broadband continuous casting to produce slabs, followed by slab cutting and reheating in a walking beam furnace.

In the hot rolling stage, the slab goes through rough rolling (1 heating furnace, 5 passes), heat preservation, and finishing rolling (7 passes) with controlled rolling technology to achieve precise thickness and mechanical properties.

Finally, the strip undergoes laminar flow cooling, coiling, and packaging, ensuring excellent surface quality, strength, and dimensional stability for industrial applications.