Cold Rolled Steel Plate Supplier | High-Quality Q235, SPCC, DC01 Steel

Product Overview‌

Cold Rolled Steel Plate (also called substrate steel for cold rolling) are hot-rolled steel plates/pickled coils processed into cold-rolled sheets, galvanized steel, or color-coated panels. Widely used in automotive manufacturing, home appliances, and building materials.

Material Classification & Properties

1. Carbon Structural Steel (Low Carbon)

• Grades: Q195/Q215/Q235 (GB), SPCC (JIS), DC01 (EN)
• Features: Excellent formability, cost-effective
• Applications: General stamping, electrical cabinets

2. HSLA Steel (High Strength Low Alloy)

• Grades: Q345/Q390 (GB), SAPH440, HC340LA
• Features: 340-440MPa yield strength, lightweight
• Applications: Auto chassis, structural components

3. Automotive Structural Steel

• Features: Balanced strength/formability, fatigue resistanceM’s established supply network ensures reliable delivery to both emerging and mature wind markets worldwide.
• Grades: SAPH series, B-series, HR340LA

4. Silicon Steel Plate

• Grades: Non-oriented/Oriented silicon steel base
• Features: Superior magnetic properties
• Applications: Motors, transformers

Chemical Composition (%)‌

Grade	C	Mn	Si	P (≤)	S (≤)	Standard
Q235B	≤0.22	≤1.4	≤0.35	0.045	0.045	GB/T 700
SPHC	≤0.15	≤0.6	≤0.05	0.05	0.05	JIS G3131
DC01	≤0.12	≤0.6	–	0.045	0.045	EN 10130
SAPH440	≤0.18	≤1.5	≤0.05	0.03	0.03	Auto OEM
HC340LA	≤0.12	≤1.6	≤0.5	0.025	0.025	ISO 4950

‌Mechanical Properties‌

Grade	Yield (MPa)	Tensile (MPa)	Elongation (%)	Standard
Q235B	≥235	375-500	≥26	GB/T 700
SPHC	≥270	270-410	≥31	JIS G3131
DC01	≥140	270-410	≥28	EN 10130
SAPH440	≥440	510-610	≥24	SAE J2340
HC340LA	≥340	430-540	≥27	ISO 4950

Why Choose CJM Steel?‌

• 15+ Years of Specialization: Dedicated expertise in wind energy steel solutions since 2010
• Massive Inventory Capacity: Over 1 million tons annual stock for prompt delivery
• End-to-End Service: Integrated sales, precision cutting (plasma/oxy-fuel), processing (shot blasting, priming), and logistics
• Global Supply Network: Regular shipments to Europe, South America, Middle East, and India
• Competitive Pricing: Factory-direct prices with no middlemen

Applications‌

Cold Rolled Steel Plates are critical materials in multiple industries due to their excellent formability, surface quality, and mechanical properties. Below are the key application fields:

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‌1. Automotive Manufacturing‌

• ‌Components‌: Body panels, chassis parts, structural reinforcements
• ‌Material Examples‌:
  • ‌SAPH440/HR340LA‌: High-strength steel for crash-resistant structures
  • ‌HC340LA‌: Lightweight components for weight reduction
• ‌Advantages‌: High strength-to-weight ratio, fatigue resistance

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‌2. Home Appliances‌

• ‌Components‌: Refrigerator panels, washing machine drums, oven casings
• ‌Material Examples‌:
  • ‌DC01/SPCC‌: Superior surface finish for painting or coating
  • ‌Q235‌: Cost-effective for non-critical parts
• ‌Advantages‌: Corrosion resistance, aesthetic compatibility

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‌3. Building & Construction‌

• ‌Applications‌: Metal roofing, partition systems, HVAC ducts
• ‌Material Examples‌:
  • ‌Hot-dip galvanized steel‌: Corrosion-resistant cladding
  • ‌Color-coated panels‌: Aesthetic and durable architectural finishes
• ‌Advantages‌: Weather resistance, structural stability

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‌4. Electrical Engineering‌

• ‌Applications‌: Motor cores, transformer laminations, generator parts
• ‌Material Examples‌:
  • ‌Cold-rolled non-oriented silicon steel‌: High magnetic permeability
• ‌Advantages‌: Reduced energy loss, efficiency in electromagnetic applications

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‌5. General Manufacturing‌

• ‌Applications‌: Storage cabinets, machinery housings, industrial shelves
• ‌Material Examples‌:
  • ‌Q195/Q215‌: Low-cost structural components
  • ‌SPHC‌: Balanced performance for bending and stamping
• ‌Advantages‌: Versatility, ease of fabrication

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‌Key Selection Criteria by Industry‌

Industry	Priority Properties	Recommended Grades
Automotive	High strength, fatigue life	SAPH440, HC340LA, HR340LA
Appliances	Surface quality, formability	DC01, SPCC, Q235
Construction	Corrosion resistance	Galvanized/Color-coated variants
Electrical	Magnetic performance	Non-oriented silicon steel

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‌Standards & Certifications‌

• ‌Automotive‌: ISO 3575, SAE J2340
• ‌Construction‌: ASTM A653 (galvanized steel), EN 10346
• ‌Electrical‌: IEC 60404-8-4 (silicon steel)

Cold Rolled Steel Plate ensure precision and reliability across industries, meeting global standards for performance and sustainability.

Our Promise

• ① Factory-direct competitive pricing
• ② Technical guidance for your projects
• ③ Reliable supply chain management
• ④ Tailored solutions for your needs

Factory & Equipment‌

Packaging & Logistics‌

• Standard Export Packaging‌: Waterproof paper + steel straps + wooden pallets.
• Flexible Options‌: OEM packaging or bulk shipments.
• Global Logistics‌: FOB, CIF, or door-to-door delivery with real-time tracking.

Contact Us‌

Ready to order or need a quote? Email or call us for more information.

Q: What is your company’s main products/services?

A: We are a professional manufacturer for Carbon Steel, Alloy Steel and Profile products. We have the experience of steel business for more than 10 years and our products are exported to Mid East,South America,Southeast Asia,Africa,South and East Asia etc.

Q: Can I go to your factory for a visit?

A: Of course, we welcome customers from all over the world to visit our factory.

Q: What are your terms of payment?

A: 30% T/T deposite and 70% balance before shipment.

Q: What is your delivery time?

A: For stocks,we could transport the goods to loading port within 7 days after we received the deposit; For production,it usually takes about 15-30 days after receiving the deposit.

Q: Do you provide samples? Are they free or paid?

A: Samples are available for free,but the courier freight will be covered by customer account.

Q: Do you accept the third party inspection?

A:Yes, we fully accept ‌third-party inspections.

Q: Why should I buy from you not from other suppliers?

A: Integrating the superior resources of China’s steel industry, we provide customers with high-quality steel products at preferential prices, and can ensure that the goods are delivered to customers in a timely manner.

Q:How can you guarantee quality?

A: Always a pre-production sample before mass production;Always 100% inspected before shipment