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怎样用肉眼区分真假热镀锌无缝钢管?

来源:http://www.jnlhjscl.com/ 日期:2020-05-21 发布人:adminlehao

怎样用肉眼区分真假热镀锌无缝钢管?

How to identify the true and false hot-dip galvanized seamless steel pipe with naked eyes?
现在市场上出现一种所谓的热镀锌流体管,也叫去镀锌无缝化管,其实就是经过处理的高频焊管,将原来的焊缝用专用的设备或者刨掉或者磨掉再镀锌。现在将对这种管子的辨别拿出来与大家分享:
Now there is a so-called hot galvanizing fluid pipe in the market, which is also called de galvanizing seamless pipe. In fact, it is a processed high-frequency welded pipe, which uses special equipment to gouge or grind off the original weld and then galvanize. Now I will take out the identification of this kind of pipe and share with you:
1)凡是刨掉的或者磨掉的都会留下痕迹,有的还很明显;
1) All that is planed or ground will leave traces, some of which are still obvious;
2)热镀锌去无缝化管都是6米,9米或12米定尺的,正品热镀锌无缝钢管定尺的十分少,因为定尺出厂要加价很多;
2) The hot-dip galvanized seamless steel pipes are 6 meters, 9 meters or 12 meters in length, and the standard hot-dip galvanized seamless steel pipes are very few in length, because the fixed length factory has to add a lot of price;
3)这种管子的厂家由于怕承担责任,他们的质量证明书上都是流体管而不敢说是无缝钢管;
3) The manufacturer of this kind of pipe is afraid to bear the responsibility. Their quality certificates are all fluid pipes, but they dare not say that they are seamless steel pipes;
4)看其壁厚是否均匀,由于无缝钢管是采用圆钢热轧穿孔制作而成,所以一般无缝钢管壁厚会有偏差(随着技术的不断提高无缝钢管的壁厚偏差越来越小,但还是有的),而焊管虽然经过焊筋处理或者热扩等程序,但是由于他的原材料是带钢,所以他的壁厚是非常的均匀。
4) To see whether the wall thickness is uniform, because the seamless steel pipe is made of round steel by hot rolling and piercing, there will be deviation in the wall thickness of the seamless steel pipe in general (with the continuous improvement of technology, the deviation of the wall thickness of the seamless steel pipe is getting smaller and smaller, but there is still some). Although the welded pipe is processed by welding bars or heat expansion, its wall thickness is very high because its raw material is steel strip Even.
如何从外观上辨别冷热镀锌钢管
How to distinguish hot and cold galvanized steel pipe from appearance
大家有没有经常为分辨一些管件是冷镀锌还是热镀锌而烦恼呢?当然很多人会说送到质检机关不就清楚啦,但是我个人认为,传统的检查方式不仅浪费时间又浪费钱,
Do you often worry about whether some pipe fittings are cold galvanized or hot galvanized? Of course, many people will say that it's not clear to send it to the quality inspection authority, but I personally think that the traditional inspection method is not only a waste of time but also a waste of money,
下面就为大家介绍一种辨别这两种管件的方法
Here is a way to distinguish these two kinds of pipe fittings
1、区别如下:
1. The differences are as follows:
外观:热镀锌看上去有凹凸外表稍暗;冷镀锌看上去光滑外表光亮;
Appearance: the surface of hot-dip galvanizing is concave and convex, slightly dark; the surface of cold-dip galvanizing is smooth and bright;
厚度:热镀锌厚,冷镀锌薄;
Thickness: hot galvanized thick, cold galvanized thin;
内孔:热镀锌内孔都有镀层:冷镀锌内孔仅两头有;
Inner hole: hot-dip galvanized inner hole has coating: cold galvanized inner hole only has two ends;
耐蚀性:热镀锌高:冷镀锌低;
Corrosion resistance: high hot galvanizing, low cold galvanizing;
标识:热镀锌两端有蓝色油墨印的箍,通体有执行标准和规格型号:冷镀锌无。
Identification: both ends of hot-dip galvanizing are provided with hoops printed with blue ink, and the whole body has executive standards and specifications and models: no cold galvanizing.
2、冷镀锌的价格相应较低
2. The price of cold galvanizing is relatively low
这是个经验性的东西,不过观察镀锌层是否平整均匀是一个重要的项目,还有就是看一下质量
It's an empirical thing, but it's an important project to observe whether the galvanized layer is even, and also to see the quality
检测报告、出场说明书的证明文件,如果觉得文件无法说明,那么我建议用锤子之类的东西敲
If the test report and the supporting documents of the exit instruction cannot be explained, I suggest knocking with a hammer or something
打管道,看镀锌层是否会脱落,如果有脱落,那么十有八九是冷镀的。
Hit the pipe to see if the galvanized layer will fall off. If it does, it will be cold plated in nine out of ten cases.
以上就是关于“怎样用肉眼区分真假热镀锌无缝钢管?”的相关内容,信息由济南镀锌管整理提供,想了解更多欢迎点击官网http://www.jnlhjscl.com
The above is about "how to distinguish the true and false hot-dip galvanized seamless steel pipes with naked eyes?" Jinan Galvanized Pipe Co., Ltd. provides relevant information. For more information, please click the official website http://www.jnlhjscl.com 。



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