When it comes to galvanized pipe is basically one of the materials often used in house decoration, so when we buy galvanized pipe, we must first understand its specifications, that galvanized steel pipe specifications are what.

http://montymontgomeryart.com/uuff92yfi What are the specifications of galvanized steel pipe


https://eclecticcloset.ca/2022/09/zmc8qr3xsv9 The general specifications of galvanized steel pipe are: DN15 type with an outside diameter of 21.3mm, DN20 type with an outside diameter of 26.9mm, DN65 type with an outside diameter of 76.1mm, etc. It is mainly divided into cold galvanized pipe and hot galvanized pipe, hot galvanized steel pipe is widely used in fire fighting, electric power and highway. Galvanized steel pipe is the surface layer with hot-dip galvanized or electro-galvanized layer, galvanization can improve the corrosion resistance of steel pipe, extend the service life, is a more widely used pipe.


https://www.mathedup.co.uk/w4d32mznj How to judge the quality of hot-dip galvanized pipes


1, the appearance of galvanized pipe fittings

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https://sepiabodoni-expo.com/sxlomvon0cs The surface of high-quality galvanized pipe fittings should be complete, uniform transition, no surface hanging, dripping or excessive lumping. The surface of the pipe fittings should not have defects such as leakage of plating and exposed iron.


https://www.troimail.com/blog/bd2nlscj 2、Thickness of galvanized layer


Tramadol Online Legal The thickness of the zinc layer of galvanized pipe is an important indicator of the quality of galvanization. Generally expressed in m units, also available per square meter galvanized layer weight (g/m2) to indicate. Since zinc and steel have different magnetic and polarization rates, the thickness of the zinc layer can be measured non-destructively with a galvanized layer thickness gauge. To determine the weight of the zinc layer, the zinc layer needs to be scraped and sampled and measured by chemical methods such as the antimony chloride method.

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3、Uniformity of galvanized layer


High-quality galvanized layer is uniform in texture, and there is no leakage or breakage after plating. Galvanized pipes can be immersed in a certain concentration of copper sulfate solution for a certain number of times and time. If there is no red leachate on the surface, it can be considered galvanized. There are no defects such as leakage and damage after galvanizing the pipe fittings.

https://wash.co.uk/a1i01f0c51 4、Adhesion of galvanized layer


https://tresata.com/ix9cecs27 The adhesion of the galvanized layer is an indicator of the solidity of the galvanized layer with the steel pipe. After the steel pipe is immersed in the zinc bath for a certain period of time, it reacts with the galvanizing solution to form a mixed zinc-iron layer. A scientifically sophisticated galvanizing process will form a zinc-iron mixed layer of sufficient thickness to improve the adhesion of the zinc layer. The adhesion of the galvanized layer can be monitored by tapping with a rubber hammer. It is better if the coating does not fall off after a certain number of light knocks.


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It is true that galvanized steel pipes are actually ordinary welded steel pipes that have been galvanized. However, due to the different production processes, galvanized steel pipes are also differentiated by type.

https://wsbeorchids.org/2022/m7hubog For example, the order of galvanizing and processing is different, giving rise to two different products, and the price of galvanized steel pipe may also be different.

Galvanized steel pipe

https://sepiabodoni-expo.com/16e7dp5 Galvanized steel strip is produced by first galvanizing steel raw materials and then post-processed to produce a steel pipe called galvanized strip steel pipe, also called pre-galvanized steel pipe.

Buy Cheap Tramadol Cod The raw steel material is first produced into a common steel pipe with the required welded steel pipe specifications, and then galvanized. The galvanized steel pipe produced in this way is called hot-dip galvanized steel pipe, also known as hot-dipped galvanized steel pipe.

Cheap Tramadol Fast Shipping There is a big difference in the price of these two types of galvanized steel pipes, with galvanized strip steel pipes being much cheaper than hot-dip galvanized steel pipes. This is due to the fact that in terms of zinc layer thickness, the steel pipe produced by the hot-dip galvanizing process will be thicker and have a stronger corrosion resistance.

However, many customers still tend to buy pre-galvanized steel pipes when they ask for quotations to buy galvanized square pipes. Not only because of the cheap price, but also because on the basis of the price, there is not much difference between the use and the hot-dip galvanized steel pipe.

https://10rate.com/izbq4hi3h17 However, it is important to note that if you need a steel pipe with a relatively high wall thickness, such as requiring a wall thickness of 2.5mm or more. Then the steel pipe manufacturer will default to your request for a hot dipped galvanized steel pipe. This is because the raw material for pre-galvanized steel pipes, galvanized strip steel, cannot meet such wall thickness conditions.

https://velvet-avocats.com/pgdx7p4g2i In other words, under the same conditions of use, people will use the cheaper pre-galvanized steel pipe and choose the hot-dipped galvanized steel pipe in special cases. The characteristics of these two types of galvanized steel pipes must be distinguished.

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