高强度螺栓属于一种标准件，这种螺栓的强度比一般的螺栓强度高出很多，高强度螺栓全名叫做高强度螺栓连接副，这种螺栓一般常常用在钢结构工程上面，专门是用来连接钢结构钢板的连接点。高强度螺栓又可以分为很多种类，一般的有扭剪型高强度螺栓和大六角高强度螺栓两种大类,其中大六角是属于普通螺栓的高强度级别，也就是一般螺栓的升级版，如果是扭剪型高强度螺栓就不同了，它是大六角的改进型版本。
High strength bolt belongs to a kind of standard parts. The strength of this kind of bolt is much higher than that of general bolt. The full name of high strength bolt is called high strength bolt connection pair. This kind of bolt is usually used in steel structure engineering, especially for connecting the connection point of steel plate in steel structure. High strength bolts can be divided into many types. There are two types of high-strength bolts: torsional shear high-strength bolts and large hexagon high-strength bolts. Among them, large hexagon belongs to the high-strength level of ordinary bolts, that is, the upgraded version of general bolts. If it is a torsional shear type high-strength bolt, it is an improved version of large hexagon.
为了更加好地去实施工程，高强度螺栓的施工就一定要先初紧然后再做终紧,初紧高强度螺栓就需要使用冲击型电动扳手或者扭矩可调的电动扳手;而终紧的高强度螺栓就有非常严格的要求,终紧扭剪型高强螺栓一定要使用扭剪型的电动扳手来紧固螺栓使用其它种类的扳手会出现一系列的问题,终紧扭矩型高强螺栓就一定要用扭矩型电动扳手来操作。 这两种高强度螺栓还有一个本质的区别就在于大六角高强度螺栓是由一个螺栓，一个螺母，两个垫圈来组成为一个整体的。而扭剪型高强度螺栓则是由一个螺栓，一个螺母，一个垫圈来组成的。
In order to better implement the project, the construction of high-strength bolts must first be tightened first, and then the final tightening. The initial tightening of high-strength bolts requires the use of impact type electric wrench or adjustable torque electric wrench; and the final tightening of high-strength bolts has very strict requirements, The final tightening of high-strength bolt of torsion shear type must use the electric wrench of torsion shear type to tighten the bolt. A series of problems will appear when using other kinds of spanners. The final tightening of torque type high-strength bolt must be operated with torque type electric wrench. The essential difference between the two kinds of high strength bolts is that the large hexagon high strength bolt is composed of a bolt, a nut and two washers. The torsion shear high strength bolt is composed of a bolt, a nut and a washer.
因为作用不同，所以高强度螺栓可以分为大六角和扭剪型，其中扭剪型的技术参数比大六角高出一些，并有一个扭力的数值参数，为了让螺栓符合这个预先设计的参数，不管在生产中还是存储中还是运输和安装的时候都要遵守一定的标准操作规范。这一点会直接影响到螺栓的更终质量。
Because of different functions, high strength bolts can be divided into large hexagon and torsional shear type. The technical parameters of torsional shear type are higher than those of large hexagon, and there is a numerical parameter of torque. In order to make the bolts meet the pre designed parameters, certain standard operation specifications should be observed during production, storage, transportation and installation. This will directly affect the final quality of bolts.
HS 长度标准长度系列：M20×50~100，M22×55~100，M24×50~100 ，长度100以内都是5毫米进位.
HS length standard length series: M20 × 50 ~ 100, M22 × 55 ~ 100, M24 × 50 ~ 100, with 5mm carry within the length of 100
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