The national standard guardrail  can be calculated by the weight of the guardrail board. The international standard of the guardrail board is very clear. Let's take the two-wave guardrail board as an example to introduce

    The thickness of the two-wave guardrail plate steel plate is divided into 3 mm and 4 mm. The 3 mm thick guardrail board weighs 12.3 tons per kilometer, and the length of the guardrail board is 4.32 meters. When installing, it needs to be spliced ??at both ends. The length of each group after splicing is 4 meters, so it is not difficult for us to calculate each set of guardrail boards. The weight is 49.6 kg.

    After the guardrail is loaded into the car, we can calculate the length of the guardrail that can be laid according to the weight of the guardrail on the car.

    The weight after loading minus the weight before the crash is the weight of the guardrail, then divided by 49.6 kg and then multiplied by 4, which is the installation length of the guardrail.

    Of course, a guardrail with a thickness of 4mm can also be calculated based on the weight. The weight of a guardrail with a thickness of 4mm per kilometer is 16.4 tons. We can calculate it by the above calculation method. I will not introduce it in detail here.

    Next, let's talk about the standard of the three-wave guardrail: the length of the three-wave guardrail is also 4.32 meters and the width is 5.06 meters.