Hamburg Elbow for Welding
What is the application of a Hamburg elbow?
A steel Hamburg elbow is a pipe fitting for welding, used to change the direction of flow for media such as water, oil, or gas. The elbow allows for a quick change in the direction of the installation. Hamburg elbows are used in industrial systems and central heating installations. They are often used in barrier construction. Hamburg elbows are applied where the direction of the medium needs to be changed. The most common angles are 90 degrees, 45 degrees, or 180 degrees. They come with bending radii of 2D, 3D, and 5D. The bending radius and dimensions for welding elbows are specified in the table below. Elbows with a 3D bending radius are most frequently chosen by welders. 2D elbows are used where there is limited space.
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The table below includes the sizes of Hamburg elbows, wall thicknesses, and their bending radii.
How to order a Hamburg elbow?
Hamburg elbows have different designations.
In Poland, the most commonly used designations are according to DN. For example, a Hamburg elbow might be DN10, DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, etc.
The size of the Hamburg elbow for welding is often also given in millimeters. For example, a Hamburg elbow 21.3x2mm, 26.9x2.3mm, 33.7x2.6mm, 48.3x3.6mm, stainless elbow 60.3x2.0mm, 45-degree elbow 76.1x5mm, return elbow 88.9x10mm, etc.
In foreign countries, however, Hamburg elbows for welding are more commonly measured in inches.
Examples of names include: elbow 1" DN25 3D XS A234 WPB, Hamburg elbow 1 1/4" for welding, Hamburg elbow 6'' 304L for welding, etc.
As mentioned above, if space is limited, a 2D welding Hamburg elbow can be used. A return elbow can also be used. In the image below, you can see an elbow used, for example, in heat exchangers. The following image compares a standard 180-degree return elbow with a short 2D return elbow. The short 2D return elbow takes up half the space compared to the standard 180-degree return elbow.
Standard 180-degree return elbows and 2D elbows 2D welding elbow
Hamburg elbows are most commonly produced in stainless steel 304L, 316L, and 321, as well as carbon steel S235JR, P235GH, P265GH, P285GH. These are just examples of the most popular steel grades. In reality, Hamburg elbows are also produced in many other types of steel.
90-degree stainless steel elbow 45-degree carbon steel elbow
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If you're unsure how to properly choose a Hamburg welding elbow, or if you're not sure where to buy the best steel elbow, send us an email at biuro@polberis.pl or call us at +48 632614202. We’ll prepare a pricing proposal for you.