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Help CenterCorrugated Galvanized Steel Coil GI Roofing Sheet Making Thickness 0.3-0.8mm Width 900-1200mm Wave Pattern
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What Is Carbon Steel Coil？
Product Definition：
Carbon steel coil is a flat-rolled steel product manufactured by hot rolling slabs into continuous coils. The coil form enables long continuous lengths, making it the preferred raw material for high-volume stamping, roll forming, tube manufacturing, pipe production, and precision slitting operations-1. With carbon as the primary alloying element (typically 0.06-0.25%), it offers an excellent balance of strength, ductility, weldability, and cost-effectiveness-.
Hot Rolled vs Cold Rolled Coil：
| Feature | Hot Rolled Coil (HRC) | Cold Rolled Coil (CRC) |
|---|---|---|
| Thickness | 0.8 – 25 mm | 0.2 – 3 mm |
| Surface | Mill scale (black), slightly rough | Smooth, bright, oiled |
| Tolerances | Standard | Tighter |
| Strength | Good | Higher (work hardened) |
| Cost | Lower | Higher |
| Primary Use | Structural, general fabrication | Precision parts, appliances, automotive |
Key Characteristics：
| Feature | Description |
|---|---|
| High Strength | Tensile strength from 370–600+ MPa depending on grade and thickness-49 |
| Excellent Weldability | Suitable for arc welding, gas welding, and resistance welding-1 |
| Good Formability | Can be bent, rolled, stamped, and fabricated-1 |
| Cost-Effective | Most economical choice for structural applications – up to 40-60% less than stainless steel |
| Available in Large Dimensions | Width up to 2000mm, coil weight up to 25 tons |
| 100% Recyclable | Environmentally friendly with no loss of properties |
| Uniform Edge Quality | Precise, uniform edges minimize material loss during processing-1 |
Typical Applications by Industry：
| Industry | Applications | Recommended Grades |
|---|---|---|
| Construction & Infrastructure | Building frames, steel structures, bridges, roofing sheets, steel decks | Q235, A36, SS400, S235JR-49 |
| Steel Pipe & Tube Manufacturing | ERW pipes, structural tubes, welded pipe production | Q235, Q355, S355JR |
| Heavy Machinery | Equipment frames, industrial platforms, base plates, beams | Q355, S355JR-1 |
| Storage & Containers | Storage tanks, containers, silos | Q235, A36-49 |
| Shipbuilding | Hull plates, decks, ship structures | ABS Grade A/B/D |
| Automotive | Truck frames, chassis components, structural parts | Q235, A36, S235JR |
| General Fabrication | Frames, fences, welded structures, reinforcements | Q235, A36-49 |
Key Specifications – Carbon Steel Coil
| Parameter | Specification / Range | Remarks |
|---|---|---|
| Standards | GB/T 700, GB/T 3274, ASTM A36, EN 10025, JIS G3101, DIN 17100 | Others on request-1 |
| Structural Grades (General) | Q235A/B/C/D/E, A36, SS400, S235JR/J0/J2 | Most common for construction--11 |
| Higher Strength Grades | Q355B/C/D/E, S355JR/J0/J2, SS490, SS540, A572 Gr.50 | Load-bearing structures- |
| Carbon/Machinery Grades | 20#, Q195, Q215, Q255, Q275 | For mechanical parts- |
| Thickness | 0.8 mm – 25 mm | Tolerance: ±0.1–0.3mm--49 |
| Width | 700 mm – 2000 mm | Custom slitting available--1 |
| Coil ID (Inner Diameter) | 508 mm (standard), 610 mm (optional)--49 | |
| Coil OD | ≤2000 mm-49 | |
| Coil Weight | 3 – 25 tons per coil | Standard: 5–25 tons- |
| Surface Treatment | Black (mill scale), pickled & oiled, anti-rust coating | See Screen 8 |
| Edge | Mill edge or slit edge | – |
| Density | 7.85 g/cm³ | – |
| Testing | Chemical analysis (OES), tensile, hardness, impact (Charpy), UT (optional) | Mill cert EN 10204 3.1 |
| Packaging | Waterproof paper + steel straps + wooden pallet | Seaworthy, ISPM 15 |
Wuxi Yansheng Technology Co., Ltd. – Company Profile
Wuxi Yansheng Technology Co., Ltd. is a comprehensive technology enterprise specializing in high-quality metal raw material supply and precision processing services. Located in Wuxi City, a major steel distribution center in China, the company leverages the mature industrial chain advantages of the Yangtze River Delta region to provide professional material solutions to global customers.
As a technology-driven enterprise, Yansheng Tech maintains strategic cooperation with several well-known steel mills (such as TISCO, Baosteel, JISCO, Dongfang Special Steel, etc.) and is an authorized distributor of these mills. Our main products include stainless steel (304/316/BA/EP pipe), carbon steel, silicon steel, copper, aluminum and other materials in the form of sheets, pipes, coils, as well as custom-processed parts.
Core Business Highlights:
Material Supply: We maintain sufficient stock inventory, offering 304/316 stainless steel sheets, pipes, coils, API 5L casing, electrical steel, and more. We also accept orders for special steel grades and non-standard specifications.
Precision Processing: Equipped with imported mirror polishing machines, water jet cutting machines, high-precision slitting/leveling lines, large CNC milling machines, boring machines, and more. We provide customized services including BA/EP pipe finishing, medium plate polishing, matte finishing, embossing, plasma cutting, etc.
Main Applications: Our products are widely used in industries such as solar energy, pressure vessels, boilers, electric heating equipment, petrochemicals, environmental protection machinery, pharmaceutical and food processing, and new energy vehicles.
Our processing center is located in Xishan District, Wuxi City, covering nearly 10,000 square meters, with an experienced technical and service team. We adhere to the business philosophy of "Technology First, Quality Oriented, Service Supreme" , providing 24/7 warehousing and logistics support as well as comprehensive after-sales service. Yansheng Tech is committed to being your trusted long-term partner.
Frequently Asked Questions (FAQ)
Q1. What products do you mainly supply?
We mainly supply stainless steel (304/316/BA/EP pipes), carbon steel, silicon steel, copper, aluminum, and other materials in sheets, pipes, and coils. Customized processing services are also available.
Q2. Do you have stock available?
Yes, we maintain sufficient stock for most standard specifications. For non-standard sizes, we can accept orders with reasonable lead time.
Q3. Can you provide MTC (Mill Test Certificate)?
Yes, we provide MTC for every shipment. Third-party inspection (SGS, TÜV, BV, etc.) is also available upon request.
Q4. Do you support video inspection before shipment?
Yes, we fully support video inspection. You can also arrange an agent or third party to visit our factory for on-site inspection before shipment.
Q5. What are your main export markets?
We export to Southeast Asia, the Middle East, Europe, Africa, and South America. We have rich experience in international trade and export documentation.
Q6. What payment terms do you accept?
We accept T/T (wire transfer), L/C at sight (irrevocable), and sometimes a combination of T/T deposit + L/C balance. Payment terms are negotiable based on order size and customer history.
Q7. Can you provide samples?
Yes, samples are available for most standard products. For custom sizes, we may need to produce small batch samples. Sample cost and shipping are usually borne by the customer, but can be discussed.
Q8. What is your typical lead time?
For stock items: 7–10 days after order confirmation. For custom production: 20–30 days, depending on the specification and quantity.
Q9. What quality certifications do you have?
We provide MTC with every shipment. Our partner mills are ISO9001 certified. We can also assist with third-party inspections (SGS, TÜV, BV) upon request.
Q10. How can I get a quotation?
Please send us your material grade, specification (size, thickness, length), quantity, and preferred trade term (FOB, CIF, DAP, etc.). We will reply with a detailed quotation within 24 hours.
Send Inquiry to This Supplier
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