Now in the market, we can easily buy the steel mesh we need, because there are many sellers of this product, but do you firmly believe that what we can buy is high quality? Is the price you bought the lowest?

　　市场虽然卖钢筋网的商家是很多的，可是他们产品质量并不一定都是合格的，有的商家为了多挣点钱就会出售质量不合格的产品，所以咱们在购买的时分应该十分的小心，要在很多的卖家傍边找到的钢筋网购买。当然在挑选商家的时分还要注意，并不能为了而花冤枉钱吧。所以咱们要选就选性价比高的钢筋网。

　　Although there are many retailers selling steel mesh in the market, the quality of their products is not necessarily qualified. Some retailers will sell products of unqualified quality in order to earn more money. So we should be very careful when we buy them. We should find the best quality steel mesh beside a lot of sellers to buy. Of course, we should pay attention to the price when choosing the merchants. We can't waste money for the sake of high quality. So let's choose the steel mesh with high cost performance.

　　正是工业开展愈加有劲头，钢筋网也是越来越好了。因为不仅仅要在性能方面做到优势，也要从质量方面来把关。对于赢得大家信赖的好产品，这样才会让生产技艺方面有了更大的立异与进步。这也会让钢筋网越来越占有市场前景。

　　It is industry that is developing more vigorously, and steel mesh is getting better and better. Because we should not only achieve superiority in performance, but also check the quality. To win everyone's trust in good products, so that the production technology has greater innovation and progress. This will also make the reinforcing steel mesh more and more market prospects.

　　并且，从钢筋网来看，选用着好的材料，这对于质量才是硬道理。耐用性以及其它的性能也均提高起来了。与此一起，产品性能方面也会得到一方面的改进，从运用生产力来说，率的产品也是为群众所喜欢。

　　Moreover, from the point of view of reinforcing steel mesh, the best material is chosen, which is the absolute principle for quality. Durability and other properties have also been improved. Together with this, product performance will also be improved on one hand. In terms of productivity, efficient products are liked by the masses.

　　钢筋衔接套筒略微拧松一点也不行吗？当然不行了。它会影响整个工程。咱们做事就要做好。能避免的事故尽量避免它发生。

　　Is it not possible to loosen the reinforcing bar connection sleeve slightly? Of course not. It will affect the whole project. Let's do the best we can. Avoidable accidents should be avoided as far as possible.

　　针对如何处理钢筋套筒衔接松动问题，咱们有四种处理办法。

　　In view of how to deal with the problem of loosening connection of reinforcing steel sleeve, we have four ways to deal with it.

　　1、摩擦防松。这是运用广的一种防松办法，这种办法在螺纹副之间发生一不随外力变化的正压力，以发生一能够阻止螺纹副相对滚动的摩擦力。这种正压力可通过轴向或一起两向压紧螺纹副来实现。如选用弹性垫圈、钢筋衔接套筒、自锁螺母和尼龙嵌件锁紧螺母等。这种防松办法对于螺母的拆开比较便利，但在冲击、振荡和变载荷的状况，开端螺栓会因松懈导致预紧力下降，跟着振荡次数的添加，丢失的预紧力缓慢地增多，终将会导致螺母松脱、螺纹联接失效。

　　1, friction prevention. This is the most widely used anti-loosening method. This method produces a positive pressure between the threaded pairs that does not change with the external force to produce a friction that can prevent the relative rolling of the threaded pairs. This positive pressure can be achieved by axial or two-way compression of threaded pairs together. For example, elastic washer, reinforcing bar connection sleeve, self-locking nut and nylon insert locking nut are selected. This method is convenient for nut disassembly, but in the case of impact, oscillation and variable load, the preload of the start bolt will decrease due to loosening. With the increase of the number of oscillations, the lost preload will increase slowly, and eventually lead to nut loosening and thread connection failure.

　　2、机械防松。是用止动件直接约束螺纹副的相对滚动。如选用开口销、串连钢丝和止动垫圈等。因为止动件没有预紧力，螺母松退到止动方位时防松止动件才干起作用，因此，这种办法实际上不防松而是避免脱落。

　　2, mechanical loosening. The relative rolling of the thread pair is constrained directly by the stop. For example, open pin, series steel wire and stop washer are selected. Because the stop has no preload, the anti-loosening stop can work when the nut is loosened to the stop position. Therefore, this method actually does not prevent loosening but avoids falling off.

　　3、铆冲防松。在拧紧后选用冲点、焊接、粘接等办法，使螺纹副失去运动副特性而衔接成为不行拆衔接。这种办法的缺点是栓杆只能运用一次，且拆开十分困难，必须破坏螺栓副方可拆开。

　　3, riveting and anti loosening. After tightening, punching point, welding, bonding and other methods are selected to make the thread pair lose the characteristics of the motion pair and join into a non-disassembly connection. The disadvantage of this method is that the bolt can only be used once, and it is very difficult to disassemble. The bolt pair must be destroyed before it can be disassembled.

　　4、结构防松。是使用螺纹副自身结构，即唐氏螺纹防松办法。

　　4, the structure is loose proof. It is to use the thread pair's own structure, that is, the Down's thread loosening prevention method.