钢板按厚度分，薄钢板4~60毫米，特厚钢板60~115毫米。钢板按轧制分，分热轧的和冷轧的。薄板的宽度为500~1500毫米；厚的宽度为600~3000毫米。薄板按钢种分，有普通钢、优质钢、合金钢、弹簧钢、不锈钢、工具钢、耐热钢、轴承钢、硅钢和工业纯铁薄板等；按专业用途分，有油桶用板、搪瓷用板、防弹用板等；按表面涂镀层分，有镀锌薄板、镀锡薄板、镀铅薄板、塑料复合钢板等。厚钢板的钢种大体上和薄钢板相同。在品各方面，除了桥梁钢板、锅炉钢板、汽车制造钢板、压力容器钢板和多层高压容器钢板等品种纯属厚板外，有些品种的钢板如汽车大梁钢板（厚2.5~10毫米）、花纹钢板（厚2.5~8毫米）、不锈钢板、耐热钢板等品种是同薄板交叉的。
| Q235B/Q345B热轧板/冷板规 格 |
| 0.2mm | 4mm | 21mm | 70mm |
| 0.25mm | 4.5mm | 24mm | 75mm |
| 0.3mm | 5mm | 25mm | 80mm |
| 0.35mm | 5.5mm | 26mm | 85mm |
| 0.4mm | 6mm | 28mm | 90mm |
| 0.45mm | 6.5mm | 30mm | 95mm |
| 0.5mm | 7mm | 32mm | 100mm |
| 0.55mm | 8mm | 34mm | 105mm |
| 0.6mm | 9mm | 36mm | 110mm |
| 0.7mm | 10mm | 38mm | 120mm |
| 0.75mm | 11mm | 40mm | 125mm |
| 0.8mm | 12mm | 42mm | 130mm |
| 0.9mm | 13mm | 45mm | 140mm |
| 1mm | 14mm | 46mm | 150mm |
| 1.2mm | 15mm | 48mm | 160mm |
| 1.5mm | 16mm | 50mm | 170mm |
| 2mm | 17mm | 52mm | 180mm |
| 2.5mm | 18mm | 55mm | 190mm |
| 3mm | 19mm | 60mm | 200mm |
| 3.5mm | 20mm | 65mm | |