| 出生地 |
Zhejiang China (Mainland) |
| 牌子的名字 |
WZB |
| 模式的数量 |
JDB-4 |
| 材料 |
steel |
| 类型 |
袖子 |
Can be used under low, middle and high load. Due to its superb high hardness, when under high load, it over performs than other SF-5 type. Not suitable for water, acid, ahkili circumstances. Most suitable for the supporting position of hoisting machine, e.g.bulldozer supporter, hoister supporter, reeling machine supporter etc.