Cold Rolled Steel Coil
Cold rolled mild steel coil in SPCC SPCD SPCE and DC01 to DC04 up to 1500mm wide
Specifications
Carbon Steel Coil
Hot Rolled and Cold Rolled Carbon Steel Coil
Mild steel coil for structural members bridge work and general fabrication
Carbon steel coil, also called mild steel coil, is low carbon strip supplied in coil for structural, bridge and general fabrication work. It is bought by structural fabricators, pipe and tube makers, service centers and road contractors who need steel that cuts, bends and welds without special procedures. Thickness runs from 0.1mm to 300mm and coil is released hot rolled or cold rolled, so thin gauge for pressed parts and heavy gauge for structural members come from one supplier. Grade is quoted against EN10025 ASTM A573 ASTM A283 GB/T 700-2006 GB/T711-2008 JIS G3101 JIS G3131 or JIS G3016, which keeps a drawing written for an export market from being filled with an unfamiliar substitute.
- Product Name — Mild steel coil carbon steel coil
- Place of Origin — China
- Standards — EN10025 ASTM A573 ASTM A283 GB/T 700-2006 GB/T711-2008 JIS G3101 JIS G3131 JIS G3016
- Material — Q195 Q215 Q235B Q345B S235JR S355JR SS400 SS490 SM400 SM490
- Grade — S235 S235JR S335 SS400 ST37 ST52 E250 E350 SM400 SM490
Why It Is Specified
Key Benefits of Carbon Steel Coil
Bends and Welds Without Special Procedures
Mild steel coil is easy to weld and easy to shape, and its bending strength is low enough that it falls into the easily bendable category. A general fabrication shop can run it with the equipment it already has.
Good Plasticity and Toughness
The material takes forming and impact without cracking, which is what keeps it in structural members platforms and road repair work.
Grade Quoted Against a Named Standard
EN10025 ASTM A573 ASTM A283 GB/T 700-2006 GB/T711-2008 JIS G3101 JIS G3131 and JIS G3016 are all covered, so a drawing is filled with the grade it actually calls for.
Hot Rolled or Cold Rolled From One Order
Hot rolled coil for structural sections and cold rolled coil for pressed and visible parts are supplied on the same purchase order.
Thin Gauge Through to Heavy Plate Thickness
Thickness from 0.1mm to 300mm covers light gauge stamping stock and heavy structural section without moving to a second supplier.
Processing Done Before It Reaches Your Shop
Bending, welding, decoiling, cutting and punching are available, so coil can arrive slit cut or blanked instead of tying up your decoiler.
Problems It Solves
What This Material Removes From Your Process
Grades Substituted Against the Drawing
A member called up as S355JR or SS400 is often filled with whatever is in stock. Coil is quoted against the named standard from EN10025 to JIS G3101 and documented on the mill test certificate.
Material That Cracks at the Bend
Higher strength strip can fail at a tight radius on a fabrication line. Mild steel coil has good plasticity and toughness and sits in the easily bendable category.
Splitting Thin and Heavy Sections Across Suppliers
Projects that need light gauge and heavy section usually buy from two sources. The 0.1mm to 300mm range covers both on one order.
Welding Procedures Slowing the Shop Down
Alloy and heat treated plate need controlled preheat and interpass conditions. Mild steel coil is easy to weld with standard shop practice.
Coil Arriving at the Wrong Width
Master coil that has to be slit again delays a tube mill or press line. Coil width is set on the order and decoiling is done before shipment.
Application Scenarios
Where It Is Used
Structural Members in Buildings
Beams columns bracing and base plates fabricated from coil that has been decoiled cut and welded into section.
Bridge Fabrication
Girder webs flanges stiffeners and deck plate work where a named structural grade has to be documented.
Road Repair Platforms
Trench covers running plates and temporary platform decks used to keep traffic moving over road works.
General Fabrication and Job Shop Work
Brackets frames skids and weldments produced from cut blanks where the grade is not critical but weldability is.
Pipe and Tube Production
Strip feed for welded tube and pipe mills where coil width and thickness are set to the mill forming line.
Pressed and Formed Components
Cold rolled coil blanked and pressed into panels enclosures and formed parts where surface condition matters.
Who It Is For
Buyers Who Specify This Product
- Structural steel fabricators buying coil for building and bridge members against EN or JIS grades
- Tube and pipe mills buying slit strip at a set width and thickness for the forming line
- Service centers buying master coil to cut into sheet and blanks for local shops
- Road and civil contractors buying plate stock for platforms and trench covers
- General fabrication and job shops buying mild steel blanks for weldments and brackets
- Press shops buying cold rolled coil for panel and enclosure production
Technical Data
Specifications and Technical Features
Values below come from the product data published by Shandong Tianyu Metal Products. Confirm the exact grade and size against your order.
| Product Name | Mild steel coil carbon steel coil |
|---|---|
| Place of Origin | China |
| Standards | EN10025 ASTM A573 ASTM A283 GB/T 700-2006 GB/T711-2008 JIS G3101 JIS G3131 JIS G3016 |
| Material | Q195 Q215 Q235B Q345B S235JR S355JR SS400 SS490 SM400 SM490 |
| Grade | S235 S235JR S335 SS400 ST37 ST52 E250 E350 SM400 SM490 |
| Thickness | 0-100mm standard with 0.1mm-300mm available or customized as required |
| Width | From 1500mm or customized as required |
| Size | Customized size |
| Technique | Hot rolled and cold rolled |
| Application | Building bridge general fabrication works |
| Processing Service | Bending welding decoiling cutting punching |
| Surface | Nature or painted |
| Certificate | Mill test certificate |
| Sample | Available |
Technical Features
- Low carbon mild steel coil for structural and general fabrication use
- Grades Q195 Q215 Q235B Q345B S235JR S355JR SS400 SS490 SM400 SM490
- Additional grades S235 S235JR S335 SS400 ST37 ST52 E250 E350 SM400 SM490
- Thickness 0.1mm to 300mm or customized as required
- Width from 1500mm or customized as required
- Delivery condition hot rolled or cold rolled
- Standards EN10025 ASTM A573 ASTM A283 GB/T 700-2006 GB/T711-2008 JIS G3101 JIS G3131 JIS G3016
- Surface supplied natural or painted
Materials
- Low carbon mild steel base in commercial grades Q195 Q215 and Q235B
- Structural grades Q345B S235JR S355JR SS400 and SS490
- Welded structure grades SM400 and SM490
- Equivalent designations ST37 ST52 E250 and E350 where the drawing calls for them
Certification
- Mill test certificate supplied with the coil
Manufacturing
How It Is Made and Processed
Steelmaking and casting to the ordered carbon grade
Hot rolling to coil at the ordered thickness
Cold rolling where a closer gauge and better surface are required
Decoiling and decoiling to the ordered coil width
Cutting to sheet or blank size against the order
Bending and punching where the order includes formed parts
Surface finishing natural or painted
Coil banding marking and export packing
Quality Control
Checks Before It Ships
- Grade confirmed against the ordered standard before rolling
- Thickness checked across the ordered 0.1mm to 300mm range
- Coil width verified against the ordered width before banding
- Surface checked for the ordered natural or painted condition
- Cut sheet and blank dimensions verified against the cutting list
- Mill test certificate issued for the supplied grade
Customization
What We Can Change on Your Order
- Grade selected against EN ASTM GB or JIS as your drawing requires
- Thickness set anywhere from 0.1mm to 300mm
- Hot rolled or cold rolled delivery condition chosen at the order stage
- Slit to the coil width your tube mill or press line takes
- Cut to sheet or blank size against your cutting list
- Bending punching and decoiling carried out before shipment
Comparison
Carbon Steel Coil Against the Alternatives
| Low alloy high strength coil | Mild steel coil is easier to bend and weld with standard shop practice, where higher strength grades need tighter radii control and more careful welding. |
|---|---|
| Galvanized steel coil | Carbon coil is supplied natural or painted and is chosen where the part is coated or enclosed after fabrication, which keeps the material cost down. |
| Hot rolled plate bought as cut sheet | Coil lets sheet and blank lengths be cut to the job instead of buying a fixed plate size and paying for the offcut. |
| Buying master coil and decoiling in house | decoiling before shipment removes a handling pass and delivers strip at the width a tube mill or press line actually feeds. |
Use Guide
Specifying Handling and Welding Notes
- Name the standard as well as the grade so an S355JR call out is not filled with a nearest equivalent
- Use hot rolled coil for structural members and cold rolled coil where surface and gauge tolerance matter
- Bend across the rolling direction on tight radii and check the radius on a sample from the same coil
- Order the coil width to your tube mill or press feed so the material does not need a second decoiling pass
- Store coils off the ground and under cover because natural surface coil will rust in open yard storage
- Ask for the mill test certificate with the shipment so the grade is documented for the structural inspection file
Questions Buyers Ask
Carbon Steel Coil FAQ
Which standards do you roll carbon steel coil to?
EN10025 ASTM A573 ASTM A283 GB/T 700-2006 GB/T711-2008 JIS G3101 JIS G3131 and JIS G3016. Quote the standard from your drawing and the coil is supplied against it.
What thickness and width can you supply?
Thickness from 0.1mm to 300mm and width from 1500mm, both customized as required. The spec sheet thickness for standard stock is listed as 0-100mm.
Which grades do you hold?
Q195 Q215 Q235B Q345B S235JR S355JR SS400 SS490 SM400 and SM490, with ST37 ST52 E250 E350 and S235 designations covered where the drawing uses them.
Is hot rolled or cold rolled better for our part?
Hot rolled suits structural members and heavy fabrication. Cold rolled suits pressed parts and visible panels where gauge tolerance and surface condition matter.
How does mild steel coil behave in the fabrication shop?
It has good plasticity and toughness, is easy to weld, easy to shape and falls into the easily bendable category, so standard shop practice applies.
Can you cut the coil into sheet or blanks?
Yes. Decoiling, cutting, bending, punching and welding are available, so coil can arrive as slit strip, cut sheet or finished blanks.
Do you supply a mill test certificate and samples?
A mill test certificate is issued for the supplied grade, and samples are available. Tell us the grade and thickness you want to evaluate.
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