Steel tubes are bent using specialised machines called tube bending machines. Together with welding and laser cutting, pipe bending and pipe rolling are the two most important steps used when processing a steel tube. The current code used for our steel above, for example – S275JR – did not exist before 2006, with different codes being used in Germany, Italy, Spain and the United States.Īs you can see from the above example, the steel S355JR was referred to in Italy as FE 510 B, in Germany as St 44-2, in Spain as AE355B and in the US as A633. Only in 2006 was a standard introduced that set out a generally applicable set of specifications for steel alloys. It’s important to note that, until 2006, almost every country 17used a different code to describe steel alloys. The properties of the steel tube also determine its suitability for a certain use or purpose, such as the production of tools or the construction of buildings, for example. In this article, we can merely state that the properties of the steel tube, such as ductility, rigidity and its general ease of processing all depend on the formulation of its alloy. Wikipedia provides a detailed classification of steel grades according to the steel’s carbon content. If you have multiple options, optimize your choice.If we consult the above table, we can decipher the steel code S275JR as meaning the following:.You may choose any bend radius on this line(s).Consider what minimum bend size you require (Only consider lines that meet your minimum bend requirement).Refer to the first column to choose your material thickness.
Refer to table(s) for your choice of material.It is possible to choose other bends, but tooling charges may apply. The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by Protocase. Alternatively, you can design with any value, and we can adjust it for you later in the process. If you need help choosing a value, contact us at or 1-86 and we can help. Use this document to choose values that are both manufacturable and meet your needs. It is most economical to use a single bend radius throughout the design, but if necessary, you can utilize multiple radii. ( Watch More Tech Tip Videos) Bend Radii & Minimum Bend Sizes
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