Description

Carbon steel coil is hot-rolled or cold-rolled strip steel supplied in coils from carbon steel. It is mainly used in building structures, machinery manufacturing, automobile bodies, pipeline engineering, and appliance housings.

Classification and characteristics of carbon steel coil:

1. Classification by carbon content: Low-carbon steel coil (C ≤ 0.25%): good plasticity, easy to weld and form, used for automotive panels and building components; Medium-carbon steel coil (0.25% < C ≤ 0.6%): balances strength and toughness, used for machine parts after heat treatment; High-carbon steel coil (C > 0.6%): high hardness, wear-resistant, mostly used for springs and tool belts (rarely supplied directly in coils, often requiring further processing).

2. By quality grade: Ordinary carbon steel coils (S/P ≤ 0.05%/0.045%), high-quality carbon steel coils (S/P ≤ 0.035%), and premium high-quality carbon steel coils (S/P ≤ 0.03%). Lower impurities result in better toughness and homogeneity.

3. By application/grade: Carbon structural steel coils such as Q235 and Q275 (used in construction and bridges); high-quality structural steel coils such as 08, 20, and 45 (used for machined parts); tool steel coils such as T8 and T10 (rarely produced in coils, mostly flat bars or wire rods).

4. By processing state: Hot-rolled steel coils (surface oxide scale, lower dimensional accuracy, high strength, used for structural parts or pickled/cold-rolled raw materials); pickled steel coils (smoother surface after oxide scale removal, used for cold rolling or stamping); cold-rolled steel coils (high precision, good surface finish, but raw materials are mostly derived from hot-rolled carbon coils).

Applications of Carbon Steel Coil:

Carbon steel coils (including hot-rolled and cold-rolled forms) are mainly used in building structures, machinery manufacturing, automobile bodies, pipeline engineering, and appliance housings. They are differentiated by grade (e.g., Q235, A36 steel coil, SPCC steel coils) and process (hot-rolled/cold-rolled) for load-bearing, forming, or decorative applications.

1. Construction and Bridges: Hot-rolled carbon steel coils (e.g., Q235, A36) are used for load-bearing components such as steel structure beams and columns, bridge frames, and factory supports.

2. Automobile Manufacturing: Cold-rolled low-carbon steel coils (e.g., SPCC, DC04 steel coil) are used for body panels (door panels, hoods) and chassis components, relying on their good stamping properties and surface quality.

3. Machinery and Pressure Vessels: Medium and low-carbon steel coils (e.g., 20, 16Mn) are used to manufacture gears, shafts, boilers, storage tanks, and pipelines (petroleum, chemical, power).

4. Home Appliances and Hardware: Cold-rolled carbon steel coils (often galvanized/color-coated) are used for casings, brackets, cabinets, etc., requiring dimensional accuracy and formability.

5. General Structural Components: Various carbon steel coils can be processed into angle steel, channel steel, coiled pipes, fasteners, or welded structures, suitable for agricultural machinery, containers, shelves, etc.

Specifications of Carbon Steel Coil:

Standard	GB/T709-2006, ASTM A36, JIS G4051,
Standard	DIN EN 10083, SAE 1045, ASTM A29M
Steel Grade	EN: S185, S235JR, S275JR, S355JR, S420NL, S460NL S500Q, S550Q, S620Q, S690Q
	ASTM: Grade B, Grade C, Grade D, A36, Grade 36, Grade 40, Grade 42, Grade 50, Grade 55,
	Grade 60, Grade 65, Grade 80
	A36、A53、S235JR、S235J0、S235J2、SM400A、St37-2、SA283Gr、SA516 GR70, SS400、S355JR 、
	JIS: SS330, SPHC, SS400, SPFC, SPHD, SPHE
	GB: Q195, Q215, Q235A, Q235B, Q235C, Q235D, Q255A, 255B, Q275, Q295A, Q295B
	Q345B,Q345C,Q345D,Q345E,Q390A,Q390B,Q390C,Q390D,Q390E,Q420,Q420B,Q420C,Q420DQ420E,Q460D, Q460E, Q500D, Q500E, Q550D, Q550E,
	Q620D,Q620E,Q690D,Q690E

Standards and Classifications

Product	Carbon Steel Sheet In Coil
Commodity	Cold Rolled Steel Coil	Hot Rolled Steel Coil
Grade	Q195, Q215, Q235, 08AL, SPCC, SPCD, SPCE, SPCEN, ST12, ST13, ST14, ST15, ST16, DC01, DC03, DC04, DC05, DC06, SAE1006, AE1008, AE1010, S35CM, S45CM, ETC.	Q195, Q215A, Q215B, Q215AF, Q215BF, Q235A, Q235B, Q235C, Q235D, Q235BF, Q255A, Q255B, Q275A, Q275B, Q275C, Q275D, A36,GR36, 20#, 45#, 10#, T9, T12, JIS G3101 SS400, SS330, S235JR, S355JR, A992, A500, ASTM A283-B/A283C, ASTM A572 Gr50-B/A572 Gr42-B, ASTM A515 Gr70, ASTM A516 Gr70, EN10025-2:2004 S235JR-S355K2+N, EN10025-5:2004 S355J2W/S355K2W .etc.
Standard	ISO,JIS,ASTM,AS EN	ISO,JIS,ASTM,AS EN
Surface treatment	Chromated and oiled, and ant-finger	Chromated and oiled, and ant-finger
Hardness	Softy, half hard ,hard quality	Softy, half hard ,hard quality
Thickness	0.12-6mm	0.12-6mm
Width	600-1500mm	600-1500mm
Coil weight	3-30MT/Coil or as your request	3-30MT/Coil or as your request
Packaging	Export standard, seaworthy	Export standard, seaworthy
Transport Type	Container, bulk and train	Container, bulk and train