Steel pipe bending method and usage scenarios

 In working life, we will encounter bent steel pipes. Bends are bent by a complete set of bending dies. Elbow is mainly used for oil, gas, infusion set and so on.

Let's take a look at five commonly used pipe bending methods.

1. Punching method: Expand the tube end to the desired size and shape, with a tapered core on the punch.
2. Bending forming method:
  2.1 Stretching method
  2.2 Stamping method
  2.3 Roller method
3. Bulging method: one is to place the rubber in the pipe, and the upper part is squeezed with a punch to make the pipe protrude; the other is hydraulic expansion, which fills the middle of the pipe with liquid, and the liquid pressure expands the elbow into a certain shape. Need shape, most bellows are produced by this method.
4. Forging method: The pipe end or part is pulled out by a die forging machine to reduce the outer diameter of the pipe fitting. The commonly used forging machines are rotary, connecting rod and roller types.
5. Rolling method: generally without mandrel, suitable for inner edge of thick-walled pipe.

What are the common usage scenarios of elbows in life?
In our daily life, it is inevitable to see and use various elbows, such as ship pipelines, automobile oil pipes and other pipelines. The arc elbow has many advantages over other types of elbows. First, various materials flow smoothly at the arc elbow, and the impact force on the pipe wall is small and uniform; secondly, the arc elbow itself has small stress concentration, Strong and high, high impact resistance;
With the rise of modern steel furniture, office chairs, beach chairs, luggage carts, shopping carts, children's trolleys, cribs, computer desks, etc., several metal pipes form several bright lines, which are practical, convenient, safe and reliable;
Air-conditioning refrigeration pipes mainly include elbows, small U-shaped pipes, return bends, etc;
The bathroom industry now has more and more bends, faucets, towel rails and S-shaped attachments.
Motorcycles, automobiles, electric vehicles, bicycles and other vehicles, handlebars, bumpers, frames, etc;
Fitness equipment, lighting, construction machinery and other industries.

From:http://boilersteelpipe.com/pro/smls/steel-pipe-bending-method-and-usage-scenarios.html