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地址：上海市宝山区宝安公路655号
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地址：佛山市顺联机械城17栋710室
|
材质 缺陷 |
灰铁 | 球铁 | 钢 | 铝 | 铜 |
| 3mm*3mm | 8~10s | 8~10s | 8~10s | 10~25s | 20~30s |
| 5mm*5mm | 15~20s | 15~20s | 15~20s | 20~30s | 30~50s |
| 10mm*10mm | 30~50s | 30~50s | 30~50s | 50~90s | 70~100s |
| 15mm*15mm | 120~240s | 120~240s | 120~240s | 180~240s | 240~360s |
