What is the standard thickness of galvanized conduit for DN16 DN20 DN25 DN32?

According to the standard of "galvanized welded steel pipe for low-pressure fluid transportation" (GB T3091-93), it is divided into ordinary pipe and thickened pipe, and its wall thickness is as follows:

The permissible deviation of the normal tube is +12 and -15).

The allowable deviation of the thickened tube is +12 and -15).

The standard for the thickness of the batch galvanized zinc layer is related to the thickness of the galvanized workpiece, which is usually as follows: If the thickness of the workpiece is greater than or equal to 6 mm, the average thickness should be greater than 85 microns, and the local thickness should be greater than 70 microns; If the thickness of the workpiece is less than 6 mm and more than 3 mm, the average thickness should be greater than 70 microns, and the local thickness should be greater than 55 microns.

It depends on what kind of pipe you want, if it is a JDG pipe, for indoor threading, the national standard is thick, and the allowable difference is mm; If it's an SC tube, it's thicker.

If you have time, you can go to our company to take a look, we are the <> responsible for the production of JDG galvanized pipes

According to the standard of "galvanized welded steel pipe for low-pressure fluid transportation" (GB T3091-93), it is divided into ordinary pipe and thickened pipe, and its wall thickness is as follows:

The permissible deviation of the normal tube is +12 and -15).

The allowable deviation of the thickened tube is +12 and -15).

The standard of the thickness of the galvanized zinc layer in batches is related to the thickness of the galvanized workpiece, which is usually as follows: If the thickness of the rubber and silver parts is greater than or equal to 6 mm, the average thickness should be greater than 85 microns, and the local thickness should be greater than 70 microns; If the thickness of the workpiece is less than 6 mm and more than 3 mm, the average thickness should be greater than 70 microns, and the local thickness should be greater than 55 microns.

Galvanized steel pipes. The national standard wall thickness from DN15 to DN300 can be found in Table 3 of GB T 28708-2012.

Galvanized steel pipe national standard thickness mm.

Galvanized steel pipe national standard thickness DN15 - national standard thickness mm, DN20 - national standard thickness mm, DN25 - national standard thickness mm, DN32 - national standard thickness mm, DN40 - national standard thickness mm.

Types of galvanized steel pipes:

1. Hot-dip galvanized square pipe.

It is a square pipe made of several times after making the potato bowl with a steel plate or a steel strip curling form, and on the basis of this square pipe, the square pipe is placed in the hot-dip galvanizing pool after a series of chemical reactions and forms a kind of square pipe, the production process of the hot-dip galvanized square pipe is relatively simple, and the production efficiency is high, the variety specifications are many, the equipment and funds required for this square pipe are very small, and it is suitable for the production of small galvanized square pipe manufacturers.

2. Cold galvanized square pipe.

It is to use the principle of cold galvanization on the square tube used to make the square pipe have anti-corrosion performance, and hot-dip galvanizing is different from the cold galvanizing coating mainly through the electrochemical principle for anti-corrosion, so it is necessary to ensure that the zinc powder is in full contact with the steel, resulting in the electrode potential difference, so the surface treatment of the steel is very important. <>

The dimensions of the national standard hot-dip galvanized steel pipe DN200 are as follows: outer diameter:; Wall thickness: welded pipe5mm (hot-dip galvanized) inner diameter: welded pipe1mm (hot-dip galvanized).

Hot-dip galvanized pipe is to react the molten metal with the iron matrix to produce an alloy layer, so that the substrate dust and the coating are combined. Hot-dip galvanizing is to pickle the steel pipe first, in order to remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in an aqueous solution of ammonium chloride or zinc chloride or ammonium chloride and zinc chloride mixed in an aqueous solution tank, and then sent to the hot-dip plating tank.

Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. The hot-dip galvanized steel pipe matrix undergoes complex physical and chemical reactions with the molten plating solution to form a corrosion-resistant and compact zinc-iron alloy layer. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix, so it has strong corrosion resistance.

Hot-dip galvanized pipe ** and use:

DN200 galvanized pipe ** about 400 yuan, galvanized pipe is used to transport fluids and powdery solids, exchange heat energy, manufacture mechanical parts and containers, it is also an economic steel. With the building structure grid, pillars and Zichun Zen mechanical support, the weight can be reduced, the metal can be saved by 20 40%, and the factory mechanized construction can be realized. The use of steel pipe pants to build highway bridges can not only save steel and simplify construction, but also greatly reduce the area of coating protective layer, saving investment and maintenance costs.

What is the standard thickness of DN16, DN20, DN25 and DN32 galvanized wire pipes?

Dear, hello, I am glad to answer for you how much is the standard thickness of galvanized wire pipe for DN16, DN20, DN25 and DN32? Answer: According to the standard of "Galvanized Welded Steel Pipe for Low-pressure Fluid Transportation" (GB T3091-93), the wall thickness of the pipe and thickened pipe is as follows:

The allowable deviation of ordinary pipe is +12 and -15 ) The allowable deviation of thickened pipe is +12 and -15 ) Extended Information Galvanized line pipe refers to a kind of steel pipe that is used to protect the line after galvanizing the surface of the steel pipe through a special process. Galvanized wire pipes have different specifications and thicknesses, and the price will also vary. Galvanized line pipe has the effect of corrosion resistance, impact resistance, good sealing performance, convenient wiring, beautiful and neat, can go from any direction, energy saving and low carbon.

Galvanized conduit can be divided into kbg pipe for socketed crimped galvanized steel conduit, jdg for socketed and set galvanized steel conduit, and now the most commonly used galvanized mu conduit model is jdg pipe. : Galvanizing line instructed tube.

Summary. Galvanized steel pipes DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100

What hole openers are used for DN25 and DN32.

According to the above-mentioned outer diameter size, select the corresponding opening size. DN25 outer diameter size DN32 is.

Select a similar aperture size.

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