Cold Rolled Steel Coil 1.5-6mm Thickness SPCC SPCD SPCE St12 St13 St14 Grades for Automotive and Industrial Applications
Zhengde cold rolled steel coil is manufactured using hot-rolled steel coil as raw material, which undergoes acid washing to remove oxide scale followed by cold continuous rolling. The resulting product is hard rolled coil with enhanced strength and hardness due to cold work hardening, while toughness and plasticity decrease. Deep processing applications require annealing treatment.
The cold rolling production process eliminates common hot-rolling defects such as pitting and oxide scale, delivering superior surface quality, high smoothness, and precise dimensional accuracy. These coils meet specialized requirements including electromagnetic performance and deep drawing capabilities.
| Application | Zhengde Standard | Grade | International Standard | Grade | Primary Uses |
|---|---|---|---|---|---|
| General Use | Q/BQB403 Q/BQB402 | St12 SPCC | DIN1623 JISG3141 | St12 SPCC | Refrigerators, appliance shells, oil barrels, steel furniture |
| Stamping Grade | Q/BQB403 Q/BQB402 | St13 SPCD | DIN1623 JISG3141 | St13 SPCD | Automotive, appliances, construction stamping |
| Deep Drawing | Q/BQB403 Q/BQB402 | St14, SPCE | DIN1623 JISG3141 | St13 SPCE | Automotive headlights, fuel tanks, doors, windows |
| Extra Deep Drawing | Q/BQB403 | St15 St14T | Car headlights, complex underbody panels, oil pans | ||
| Hard Steel | Q/BQB402 | SPCC4D SPCC8D SPCC1D | JISG3141 | 1/4 hard 1/8 hard | Bicycle rims, stationery products |
| Structural Steel | Q/BQB410 BZJ410 | St37-2G St44-3G St52-3G | DIN1623 | St37-2G St44-3G St52-3G | Buildings, car bodies, structural brackets |
| Atmospheric Resistant | BZJ441 | B440NQ B450NQ B460NQ B500NQ | Automotive, train panels, containers, doors, windows | ||
| TV Components | Q/BQB470 | SPCCK, St12CK SPCCCE SECCCD St50CB BCK-1 | Color picture tube components, shadow mask frames | ||
| Automotive Wheels | BZJ412 | B320LW B360LW | Steel for automotive wheel rims |
Cold-rolled steel coils offer superior thickness precision, smooth surfaces, and excellent mechanical properties. Standard processing includes annealing, pickling, and surface leveling to ensure optimal performance.
Ideal for automotive components, household appliances (refrigerators, washing machines), industrial equipment, and construction materials. Hard coils (8-23 ton range) serve as raw material for hot-dip galvanizing plants.
Manufactured from 1.5-6mm hot-rolled strip steel through comprehensive processes: pickling, cold rolling, degreasing, annealing, leveling, and shearing.
Our slitting machines process coils into custom-width strips for transformers, motors, and various industrial applications.
- Quality First: Strict adherence to production standards and inspection protocols
- Competitive Pricing: Market-based discounts and transparent pricing
- Transaction Security: Complete financial protection for customers
- After-Sales Support: Comprehensive problem resolution services
- Long-Term Partnership: Consistent quality, competitive pricing, and reliable service
Shandong Zhengde Metal Manufacturing Co., Ltd. is an integrated enterprise specializing in hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, section steel, steel pipes, and various metal products. With five production bases across China and over 100 production lines, we maintain 4 national laboratories and multiple technical centers, exporting to 50+ countries worldwide.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.