性能及特点：
1. 钳体采用高韧性球墨铸铁精密加工而成
2. 导轨表面做硬化处理，硬度hrc50-60
3. 角固式夹紧结构防止工件上浮
4. 它具有两个夹持工位，可夹持两个尺寸相等或尺寸不等的工件，还可以夹持两个处于不同夹紧位置加工面不相同的相同工件
5. 两钳口的平行度0.025mm/100mm，两钳口对导轨面垂直度0.025mm/100mm
6. 平口钳可单台使用，也可多台并排使用
7. 广泛用于加工中心等精密机床
performance and characterist:
1. it is made of spheroidal cast iron
2. the hardness of woaking surface is hrc50～60
3. the vice with angle locked vice can prevent workpieces rising during operation
4. it is possessed of two clamping positions.two workpieces of same sixe or of different sixe can be clamped whith it the vice is also able to ciamp two same workpieces which are clamped in different positions and processed in different
surfaces
5. the accuracy of vice(parllelism and squareness)is 0.025mm/100mm
6. the vice can be using with single or setting side by side on the machine table
7. it is widely used on machining center and othr precision machine tools