What does elbow R 5D mean? What does it mean to be with DN? How is 45 3 5 represented by DN?

What you said is not an elbow, it is a bend that will be r = is the nominal diameter of the pipe.

r=5d is the bending radius.

With DN, is the outer diameter, and DN is the nominal diameter. For example, 45 has an outer diameter of 45mm, and the wall thickness is not equivalent to DN. DN15 galvanized steel pipe.

The outer diameter is, the flange of DN15 has two diameters, one is two, and the flange is two diameters, one is, and the other is 426mm. Generally, seamless steel pipes are used, and galvanized steel pipes are used DN.

R=5D is 5 times the bending radius, which belongs to special pipe fittings, for example, the standard bending radius of the elbow of DN25 is 38mm, if it is 5 times, it is 190mm. is the outer diameter dn is the inner diameter, 45 identification should be 38

Kiss! Hello, happy to answer your <>

Pro-DN65 tube, 45° elbow, nominal diameter 65mm, center to end face long radius 40mm, its length is. The 45 degree elbow is distinguished by multiples, and the multiple is the ratio of the bending radius of the elbow to the diameter of the elbow. For example, r= r represents the distance from the center to the end face, d refers to the outer diameter of the elbow, r divided by d, and the multiple is obtained (e.g.,

r d = degree elbow needs to be multiplied by the diameter of the pipe when calculating, and then multiplied, so that the calculation is the total length of the elbow. When the water pipe is installed, it is necessary to divide the pipeline, and the 45-degree elbow needs to be used when branching the road, so that the direction of the pipeline can be changed accordingly, and the connection method can be welded, electric fusion, or threaded. It depends on the actual situation of the pipeline, but it should be noted that the quality of the selected 45-degree elbow must be guaranteed, and it must also be purchased through formal channels.

Hope mine can help you <>

Do you have any other questions?

What you are talking about is not an elbow, it is the elbow that will be r=is the nominal diameter of the pipe, and r=5d is the bending radius. With DN, is the outer diameter, and DN is the nominal diameter. For example, 45 has an outer diameter of 45mm, and the wall thickness is not equivalent to DN.

The outer diameter of DN15 galvanized steel pipe is, and the flange of DN15 has two diameters, one is two, and the second is 426mmGenerally, seamless steel pipes are used, and galvanized steel pipes are used DN.

Elbow R=5d is the bending radius, is the outer diameter, and DN is called the diameter.

r=means that the radius of the elbow is a multiple of the diameter of the pipe!

Radius is a term in mathematical geometry that refers to the line segment that connects the center of a circle to any point on a circle (half the distance between two points on a circle), usually represented by the letter r.

Geometry definition. In a circle, the segment that connects the center of the circle to any point on the circle is called the radius of the circle. It is usually denoted by the letter r.

In a sphere, the segment of the line connecting the center of the sphere to any point on the surface of the sphere is called the radius of the ball.

The radius of the circumscribed circle in which the regular polygon is located is called the radius of the circumscribed regular polygon inside the circle.

Radius properties. Within the same circle, all the radii are equal.

A tangent of a circle is perpendicular to the radius that intersects it.

The radius of the same circle or equal circle is half the diameter; The diameter is 2 times the radius.

Two circles with equal radius have equal area of equal area.

The radius determines the size of a circle.

Shunyi 447: Hello.

What does the elbow mean?

"d" is the diameter of the object that needs to be bent.

The bending radius of the elbow is 1,5d, which is a multiple of the diameter of the object to be bent.

This sentence is: for example, a 20 object needs to be bent one by one, and the bending radius is 30.

The elbow type is different, r = is a short radius elbow, r = is a long radius elbow, there are differences in the frequency of use, the scope of use, etc., the elbow is a kind of connection fittings commonly used in plumbing installation, used for the connection of the pipe bend, used to change the direction of the pipeline.

1. Frequency: The frequency of use of long-radius elbows is high, and long-radius elbows are usually used more than short-radius elbows;

2. Scope: Long radius elbow is used for pipelines with high pressure and high flow rate; Short radius elbows are used for low-pressure, low-velocity fluids or where there are restrictions;

Choose different bending radii according to your process, and generally choose 5D and 10D elbows in special cases. Use 1D elbow de case: 1.

The 1D elbow is used without special pressure drop requirements, without special requirements for fluid flow. 2。In the case of outer sleeves, 1D elbows are more often used.

The inner pipe uses an elbow with a 1D elbow of the outer pipe, so that the inner pipe can be smoothly inserted into the outer pipe and reduce the difficulty of construction. 3。A 1D elbow may be used to reduce pipe vibration.

The use of a 1D elbow increases the rigidity of the entire pipe. Cases in which elbows are used:1.

Reduces pipe stress. The use of long radius elbows can increase the flexibility of the pipe. In the design process of some thermal oil pipelines, we will also use 3D and 4D elbows instead of pipeline compensators.

2。Reduce pressure drop in pipes. The equivalent length of the 1D elbow and the elbow in the process of calculating the pressure drop are different, but the difference is not large, but if the number of elbows in the whole pipe system is large, there is still some adjustment effect.

3。Reduces fluid pulsation to the pipeline. The larger the radius of curvature of the elbow, the less dynamic load the fluid has on the pipe system.

r=means that the radius of the elbow is a multiple of the diameter of the pipe! That is, this elbow is 90 degrees, specializing in production, and there is a problem connection.

Summary. First of all, before calculating the R=5 times elbow of DN400 and how long is 58 degrees, we must first clarify the meaning of DN400 and the definition of R=5 times elbow. DN400 represents the diameter of the pipe, and 400mm refers to the outer diameter; The definition of r=5 times elbow refers to the ratio of pipe diameter to radius, which is determined by the ratio of the inner and outer diameters of the pipe end to 5.

Therefore, how long is 58 degrees, which refers to the length of a 58-degree bend of this type of pipe. Calculate how long 58 degrees is by the formula r=5 times elbow * dn400*58 degrees. Among them, the value of 5 times the elbow (, dn 400 value (, 58 degrees (3), so 58 degrees is about 1700mm 2010mm (pay attention to the unit conversion).

dn4oo, r=5d, how long is the elbow of 58 degrees.

I've got the results for you: the length of a 58-degree elbow is about an inch (18 cm). Hope mine is helpful to you.

DN400, R 5 times elbow, 58 degrees long.

DN400, how long is the elbow of R 5D.

First of all, before calculating the R=5 times elbow of DN400 and how long is 58 degrees, we must first clarify the meaning of DN400 and the definition of R=5 times elbow. DN400 represents the diameter of the pipe, and 400mm refers to the outer diameter; The definition of r=5 times elbow refers to the ratio of pipe diameter to radius, which is determined by the ratio of the inner and outer diameters of the pipe end to 5. Therefore, how long is 58 degrees, which refers to the length of a 58-degree bend of this type of pipe.

Calculate how long 58 degrees is by the formula r=5 times elbow * dn400*58 degrees. Among them, the value of 5 times the elbow (, dn 400 value (, 58 degrees (3) morning friend, so 58 degrees are about 1700mm 2010mm (note the unit conversion).

A short radius elbow means that its radius of curvature is equal to the outer diameter of the tube, i.e., r=. is the diameter of the elbow and r is the radius of curvature 5d