Cold Rolled Steel Sheet Q/ASB 312-2021 St12 SPCC – 1.5×1500×3000mm Precision Carbon Steel Now in Stock
We are pleased to offer our premium Cold Rolled Steel Sheet conforming to Q/ASB 312-2021, grade St12-m-FB-PT.A-PW.A, at 1.5 × 1500 × 3000 mm specification. This cold rolled carbon steel sheet delivers superior surface quality, tight dimensional tolerances, and excellent formability — making it the preferred choice for home appliance manufacturing, automotive components, and precision engineering applications.
Why Cold Rolled Steel?
Cold rolled steel plate is produced by further cold rolling hot-rolled steel strips of ordinary carbon structural steel at room temperature, typically resulting in thicknesses below 4 mm. Because rolling at ambient temperature does not produce oxide scale, cold rolled sheets achieve significantly better surface quality and higher dimensional accuracy than hot-rolled alternatives. Combined with annealing treatment, they deliver superior mechanical and technological properties — increasingly replacing hot-rolled thin steel plates across multiple industries.
Product Specifications
| Parameter | Details |
|---|
| Grade | St12 / SPCC / DC01 (and equivalents) |
| Standard | Q/ASB 312-2021, GB, JIS G3141, EN 10130, DIN 1623, ASTM |
| Thickness | 0.12 – 6.00 mm (this specification: 1.5 mm) |
| Width | 600 – 1500 mm |
| Length | 1000 – 6000 mm or coil (this specification: 3000 mm) |
| Surface | SB & SD; clean, blasting and painting per customer requirements |
| MOQ | 1 ton |
| Annual Capacity | 100,000 tons |
Full Grade Range Available
| Application Category | Grades |
|---|
| General Use | St12, SPCC — Refrigerator shells, oil barrels, steel furniture |
| Stamping Grade | St13, SPCD — Automotive, home appliances, construction stamping |
| Deep Drawing | St14 (F/HF/ZF), SPCE — Auto headlights, fuel tanks, door panels |
| Extra Deep Drawing | St15, St14T — Complex underbody panels, oil pans |
| Hard Steel | SPCC 1/4 Hard, 1/8 Hard — Bicycle rims, stationery components |
| Structural Steel | St37-2G, St44-3G, St52-3G — Building frames, car bodies |
| Weathering Steel | B440NQ–B500NQ — Auto/train outer panels, containers |
| Wheel Steel | B320LW, B360LW — Automotive wheel rims |
Dimensional Range
| Form | Thickness | Width | Length / Coil ID |
|---|
| Steel Plate (Trimmed) | 0.30 – 3.5 mm | 900 – 1830 mm | 1000 – 6000 mm |
| Steel Plate (Untrimmed) | 0.30 – 3.5 mm | 900 – 1850 mm | 1000 – 6000 mm |
| Steel Strip (Trimmed) | 0.30 – 3.5 mm | 900 – 1830 mm | 610 mm ID |
| Slitting Steel Strip | 0.30 – 3.5 mm | 120 – <900 mm | 610 mm ID |
Key Applications
- Home Appliances: Refrigerator panels, washing machine bodies, microwave oven housings, air conditioner cabinets, heating radiators
- Automotive: Body panels, door frames, window frames, fuel tanks, headlight housings, wheel rims, underbody components
- Construction: Roofing sheets, elevator panels, door panels, cold-formed steel sections, interior decorative panels
- Furniture & Storage: Steel furniture, lockers, cabinets, shelving systems, office equipment
- Industrial: Oil barrels, drums, electrical enclosures, general fabrication and stamping parts
Quality & Supply Chain
With over 20 years of experience in steel manufacturing and trading, we operate in-house production lines alongside strategic partnerships with top-tier mills. Our cold rolled steel sheets are produced using five continuous rolling processes with batch annealing, ensuring consistent mechanical properties and surface finish. All products undergo rigorous quality inspection with ISO certification, and we offer custom slitting to width, cut-to-length, and tailored surface treatments.
Standard seaworthy export packaging includes waterproof paper, plastic film, and steel plate covering, secured on iron or wooden pallets. We ship from Qingdao, Shanghai, and Ningbo ports with delivery within 15–20 working days after deposit or L/C receipt. Accepted payment: T/T (30% deposit, 70% before shipment) or L/C at sight.
For quotations, technical specifications, or to discuss your cold rolled steel requirements, please contact our export team today.
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