Reducing elbow

Reducing elbow, also known as different diameter elbow, is to connect two different diameter pipe to do the steering pipe fittings. Is the use of a standard elbow billet cut to elbow, a V shaped mouth and then pressing the power by conventional or special punching equipment, the elbow billet in the mold directly affected by the deformation force and deformation, to obtain a certain shape, size and performance of the production technology of product parts, slowly in the under the action of pressure gradually turned into a circle, a circular ring shell, welding, and then use the plastic will be accomplished by elbow shaping equipment. This process is called "pumping sliver" in the industry". Tube blank, mould and equipment are three essential factors for processing variable diameter elbow. Variable diameter bend processing is a metal cold deformation processing method. It is one of the main methods of metal plastic processing (or pressure processing), and also belongs to the material forming engineering technology.

The manufacturing process of variable diameter elbow is mainly manifested in the following aspects:

1, need elbow billet as raw material, can save the cost of mold, also can get arbitrary diameter elbow.

2, the blank is elbow billet, so the work is simple, the accuracy is easy to guarantee, assembly and welding convenience.

3, due to the above two reasons, the manufacturing cycle can be shortened and the production cost is greatly reduced.

Texture of material

Carbon steel: ASTM/ASME, A234, WPB, WPC

Alloy: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP911, 15Mo3 15CrMoV, 35CrMoV

Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N

ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti

ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H

Low temperature steel: ASTM/ASME A402 WPL3-WPL 6

High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70

Variable diameter elbow (diameter elbow) is a very special elbow pipe fittings, connecting two nominal diameter of the same or different pipes, so that the pipeline for a certain angle turn. With a standard elbow billet cut to elbow, a V shaped mouth and then pressing the power by conventional or special punching equipment, the elbow billet in the mold directly affected by the deformation force and deformation, and thus obtain a certain shape, size and performance of the product parts production technology, and slowly the pressure effect under gradually turned into a circle, a circular ring shell, welding, and then use the elbow plastic shaping equipment. The elbow of variable diameter elbow is generally made of cast iron, stainless steel, alloy steel, calcined cast iron, carbon steel, nonferrous metals and plastics. The radius of the cross section of the elbow is different. Because the elbow is very similar to the reducer, it is also called a reducing elbow. Variable diameter bend processing is a metal cold deformation processing method. It is one of the main methods of metal plastic processing (or pressure processing), and also belongs to the material forming engineering technology. It is mainly used to connect two segments with different ends radius, or to be used for pipeline modification. This type of elbow usually need to produce according to the specific engineering requirements or specific drawings, in addition to the pipe size requirements, the specific circumstances must also consider the pipeline, such as pipeline pressure, fluid viscosity, wear resistance, corrosion resistance, various factors such as temperature of fluid transport. The use of direct welding connection (the most common way) flange connection, welding, welding connection, threaded connection and socket type connection connected to customers in the production of such bend when the need to provide detailed drawings and material requirements.