They are high-strength bolts, and the differences are as follows:

一、承载能力不同

1、 Different bearing capacity

1、摩擦性高强螺栓：以板层间出现滑动作为承载能力极限状态。

1. Friction high-strength bolt: take the sliding between plates as the limit state of bearing capacity.

2、扭剪型高强螺栓：以板层间出现滑动作为正常使用极限状态，而以连接破坏作为承载能力极限状态。

2. Torsional shear type high-strength bolt: take the sliding between plate layers as the normal service limit state, and the connection failure as the bearing capacity limit state.

二、应用位置不同

2、 Different application locations

1、摩擦性高强螺栓：不能充分发挥螺栓的潜能。在实际应用中，对十分重要的结构或承受动力荷载的结构，尤其是荷载引起反向应力时，应该用摩擦型高强螺拴，此时可把未发挥的螺栓潜能作为储备。

1. Friction high strength bolt: it can not give full play to the potential of bolt. In practical application, friction type high-strength bolts should be used for very important structures or structures bearing dynamic loads, especially when the load causes reverse stress. At this time, the untapped bolt potential can be used as a safety reserve.

2、扭剪型高强螺栓：除摩擦性高强螺栓以外的地方应采用承压型高强螺栓连接以降低造价。

2. Torsional shear high-strength bolt: pressure bearing high-strength bolt shall be used for connection except friction high-strength bolt to reduce the cost.

三、使用方式不同

3、 Different ways of use

1、摩擦性高强螺栓：限单次使用，用于连接，不能重复使用。

1. Friction high-strength bolt: only for single use, for connection, and can not be reused.

2、扭剪型高强螺栓：必 须先初拧后终拧，初拧高强螺栓需用冲击型77779193永利首页网址或扭矩可调77779193永利首页网址；而终拧高强螺栓有严格的要求，终拧扭剪型高强螺栓必 须用扭剪型77779193永利首页网址，终拧扭矩型高强螺栓必 须用扭矩型77779193永利首页网址。

2. Torsional shear high-strength bolt: initial tightening must be followed by final tightening. Impact electric wrench or torque adjustable electric wrench is required for initial tightening of high-strength bolt; The final tightening of high-strength bolts has strict requirements. The final tightening of torsional shear high-strength bolts must use torsional shear electric wrench, and the final tightening of torque high-strength bolts must use torque electric wrench.