| Place of Origin |
Zhejiang China (Mainland) |
| Brand Name |
WZB |
| Model Number |
JDB-4 |
| Material |
steel |
| Type |
Sleeve |
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.