0.15-0.55mm Cold Rolled Steel Coil ASTM 283grc A284grb A306gr55 Q235 with Preshipment Inspection
Zhengde cold rolled steel coil is manufactured using hot-rolled steel coil as raw material, processed through acid washing to remove oxide layers and cold continuous rolling. The resulting product is a hard coil with enhanced strength and hardness due to cold work hardening, making it ideal for applications requiring precise dimensional accuracy and superior surface quality.
| Application | Zhengde Standard | Grade | International Standard | International Grade | Typical Applications |
|---|---|---|---|---|---|
| General Use | Q/BQB403 Q/BQB402 | St12 SPCC | DIN1623 JISG3141 | St12 SPCC | Refrigerators, home appliance shells, oil barrels, steel furniture |
| Stamping Grade | Q/BQB403 Q/BQB402 | St13 SPCD | DIN1623 JISG3141 | St13 SPCD | Automotive, home appliances, construction stamping |
| Deep Drawing | Q/BQB403 Q/BQB402 | St14, (F, HF, ZF)SPCE (F, HF, ZF) | DIN1623 JISG3141 | St13 SPCE | Automobile headlights, fuel tanks, car 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 steel |
| Structural Steel | Q/BQB410 BZJ410 | St37-2G St44-3G St52-3G | DIN1623 | St37-2G St44-3G St52-3G | Buildings, car bodies, brackets |
| Atmospheric Resistant | BZJ441 | B440NQ B450NQ B460NQ B500NQ | Automobile, train car panels, container panels, doors, windows | ||
| TV Components | Q/BQB470 | SPCCK, St12CK SPCCCE SECCCD St50CB BCK-1 | Color picture tube components, shadow mask frames, explosion-proof plates | ||
| Car Wheels | BZJ412 | B320LW B360LW | Automotive wheel rims |
Cold rolled steel coils offer superior dimensional accuracy with thicknesses ranging from 0.15-0.55mm, smooth surfaces, and excellent mechanical properties. The production process includes annealing, pickling, and surface leveling to ensure optimal processing performance.
Ideal for automotive components, home appliances (refrigerators, washing machines), industrial equipment, and building materials. Cold rolled hard coils serve as raw materials for hot dip galvanizing plants, with standard weights between 8-23 tons.
Manufactured from hot-rolled strip steel (1.5-6mm thickness) through comprehensive processes including pickling, cold rolling, degreasing, annealing, leveling, and precision shearing.
Our advanced slitting machines process cold rolled steel coils into custom-width strips for transformers, motors, and other industrial applications.
- Strict adherence to production standards and quality control
- Pre-shipment SGS inspection and on-site video documentation
- Competitive pricing through direct manufacturing and sales
- Multiple secure payment options available
- Comprehensive after-sales support and long-term partnership focus
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, and various metal products. With five production bases across China and over 100 production lines, we maintain 4 nationally recognized laboratories and export to more than 50 countries worldwide.
A: Yes, we offer free samples with express shipping worldwide.
A: Please provide grade, dimensions (length, width, thickness), surface treatment requirements, and quantity needed.
A: We hold ISO 9001 certification and provide third-party inspections including SGS and BV.
A: Standard delivery is 7-15 days, extended for large quantities or special requirements.
A: Yes, all products undergo strict quality testing before packaging and loading.
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