How to distinguish the quality of electric heating pipes?

We can distinguish the quality of electric heating pipes from the following aspects:

1.Electrical strength: The influencing factors of the electrical strength of the electric heating pipe mainly include the thickness of the insulation layer, the quality of the raw materials of the insulation layer, the length of the electric heating pipe, the bending radius and the number of bends. The cold voltage of Yuling electric heating pipe is generally 2000V s

2.Insulation: The main thing that affects the insulation of electric heating pipes is the sealing process of electric heating pipes.

3.Leakage current: It is mainly related to the temperature of the electric heating pipe, the voltage of the electric heating pipe, and the heating length of the electric heating pipe. An important assessment index for high-temperature electric heating pipes. The leakage current of Yuling electric heating pipe is <

4.Power accuracy: It is mainly related to the quality of the resistance wire and the process level of the manufacturer. Yuling electric heating pipes need to be tested for temperature coefficient before mass production to determine the cold state resistance of the qualified power range.

5.Life: The life of the electric heating pipe is not only related to the quality of the resistance wire, but also related to the quality of magnesium oxide powder, the selection of the diameter of the resistance wire and other factors. When selecting the diameter of the resistance wire, the surface load of the resistance wire needs to be calculated to meet the life requirements.

6.Corrosion resistance: It is a common problem encountered by water heating electric heating pipes and barbecue electric heating pipes. In addition to the reasonable selection of materials, it is also related to the heat treatment of electric heating pipes, the surface condition of electric heating pipes, etc.

Hope it helps!

Taizhou Yuling Electric Appliance **** - specializing in the production of electric heating pipes.

It's actually easier to tell the difference. 1. First of all, look at the process, there are 21 processes when we make heating tubes. There is also a spectrometer to measure the material, but also to see whether the steel pipe is seamless or seamed, whether the insulation is magnesium oxide powder, this is internal.

Looking at the appearance, the heating tube that has been dried is generally bronze, which evaporates the water vapor inside, and the heating tube has a longer life. What has not been dried is the primary color of stainless steel.

Look**, generally** the expensive ones will be better, and you can also look at the appearance to compare.

In fact, it is very simple to judge the quality of the heating pipe, you only need to test whether the resistance value of the electric heating pipe can be matched, and you can judge whether it is good or bad. Because the heating pipe of the electric water heater has been inspected for some items such as the input power, resistance value, water pressure test, power test, withstand voltage test, appearance and so on before getting it. How to judge the quality of the heating pipe of an electric water heater:

1. The first situation is that the heating pipe of the electric water heater leaks, and if it is like this, it must be broken, and it can only be discarded and can not be used again. 2. The second situation is that there is no obvious damage on the surface of the heating pipe of the electric water heater, which cannot be seen. Because the electric water heater heating pipe is burned out if it is not shown by the appearance, that is, the heating wire inside the electric heating pipe body is burned out, at this time, you need to use a specially tested multimeter to test the resistance value of the electric water heater heating pipe, if the result is 0, then it must be broken and can no longer be used.

3. The third is the accuracy of power. In addition to the level of the manufacturer, the accuracy is also related to the quality of the resistance wire. 4. The fourth is the corrosion resistance of the heating pipe of the electric water heater.

This is related to the material used in the electric water heater itself and the state of the surface.

There are two ways to measure the quality of the heating pipe:

1. Multimeter.

The x1 resistance file measures the two terminal heads, and the resistance value should generally be within hundreds of ohms, with the influence of its working voltage and power, there is a difference but not much;

2. Use the resistance level above x10k to measure the resistance between any punching terminal head and the shell, which should be infinite; After use, due to moisture and other reasons, the heating wire and the shell are used to shake the meter.

It may be measured that there is a certain resistance value, but the resistance value should be above 40m, otherwise there is a problem with the safety of the mountain key.

Classification: 1. According to the classification of the outgoing method, it can be divided into single-head electric heating pipe and double-head electric heating pipe.

2. According to the classification of materials, it can be divided into stainless steel electric heating pipes, stone heating pipes, Teflon electric heating pipes, and titanium electric heating pipes.

3. According to the classification of appearance, it can be divided into straight electric heating pipe, U-shaped electric heating pipe, L-type electric heating pipe, W-type electric heating pipe, fin electric heating pipe, and special-shaped electric heating pipe.

4. According to the classification of use, it can be divided into dry burning electric heating pipe and water burning electric heating pipe.

5. According to the classification of heating methods, it can be divided into conventional resistance heating pipes and radiant electric heating pipes.

Use the multimeter resistance file (R * 1 or R * 10 gear) to measure the lead wire or lead rod of the electric heating pipe, single phase or two phases have two wires or lead out rods, use the multimeter red and black two meter pens to test the lead line, there is a resistance value r indication value within the range, that is, the electric heating pipe heating wire is not short circuit.

Use a megohmmeter (also known as a shake meter, insulation resistance meter) to measure the insulation resistance value of the electric heating pipe lead wire or the lead rod and the tube of the electric heating pipe (the ground wire of the electric heating pipe is connected with the tube of the electric heating pipe), such as the larger the indicator value of the megohmmeter, the better, indicating that the electric heating pipe is well insulated;

The minimum value shall not be less than 2m ohms, otherwise the leakage protection switch will trip and fail to work when used, check that the power cord is not damaged, and the junction box is well sealed.

When customers order electric heating pipes, the first thing to see when receiving the goods is the quality of the electric heating pipes, the following will introduce you to some simple ways to judge the quality of the electric heating pipes: The main confirmed parameters are: the resistance value of the electric heating pipe, the insulation resistance value of the heating wire Method:

1.Use the multimeter resistance file (R * 1 or R * 10 gear) to measure the lead wire or lead rod of the electric heating pipe, single phase or two phases have two wires or lead out rods, use the multimeter red and black two meter pens to test the lead line, there is a resistance value r indication value within the range (r = U * U P, u refers to the electric heating pipe marked with the voltage value, P refers to the electric heating pipe marked with the power value), that is, the electric heating pipe heating wire is not short-circuited. 2.

Then use a megohmmeter (also known as a shake meter, insulation resistance meter) to measure the insulation resistance value of the electric heating pipe lead wire or the lead rod and the tube of the electric heating pipe (the ground wire of the electric heating pipe is connected with the pipe of the electric heating pipe), such as the larger the indication value of the megohmmeter, the better, indicating that the electric heating pipe is well insulated, but the minimum value shall not be less than 2m ohm, otherwise the leakage protection switch will trip and cannot work when used. 3.Check that the power cord is not damaged and the junction box is well sealed.

Hello! For this question, it is really the opinion of the benevolent and the wise!

As a manufacturer of heating tubes, our advice to our customers is:

1. Manufacturers who do not ask about the size of the direct **, never buy;

2. If you exaggerate the life of the heating tube, you should buy it carefully;

3. Manufacturers who do not communicate with customers about the specific working environment of single-head heating tubes should buy carefully;

4. After many inquiries, if the price difference between ** and other manufacturers is too large, you should buy carefully;

Hope it helps you a little!

Here's how to measure the quality of a heating tube:1. Stainless steel 304 for normal water heating, stainless steel 316L for weak acid and weak alkaline liquid, Teflon coating material for strong acid and alkali.

2. Oil heating can be made of stainless steel 304 or iron.

3. The resistance of the two outgoing wires should be 220V, 1000W about 48 ohms, 1500W about 32 ohms, and so on.

4. The (insulation) resistance of any outlet wire and the shell is more than a few trillion ohms, and it is good for anyone who can pass the above two steps to measure.

5. Air heating is special, and different materials are selected according to different temperatures.

Use a multimeter ohm file to measure two aspects: 1, the resistance of the two outgoing wires should be normal, 220V, 1000W about 48 ohms, 1500W about 32 ohms, and so on. 2. The (insulation) resistance of any outlet wire and the shell is more than a few trillion ohms.

Those who can pass the above two steps are good.

It can be judged by two aspects of multimeter ohmic measurement:

1. The resistance of the two outgoing wires should be normal, 220V, 1000W about 48 ohms, 1500W about 32 ohms, and so on.

2. The (insulation) resistance of any outlet wire and the shell is more than a few trillion ohms.

If the above two measurements match, the heating tube is good.

Use a multimeter to measure whether there is a resistance value, if there is a resistance value of tens of ohms, it is good. If the resistance is infinite, it is bad.

Install the Winold heater disconnection alarm, or install the current indicator LC00

The material is thick and the density is good, and the brand is high.