Five advantages of stainless steel pipe fittings stamping elbows in the chemical pipeline industry

2024-08-20

Stainless steel pipe fittings stamping elbows are suitable for pipeline systems in the petroleum, chemical, hydropower, construction and boiler industries. The reason why stainless steel stamping elbows are widely used in various industries is that their advantages are generally recognized by everyone. Let's share the five advantages of stainless steel stamping elbows:

1. Due to the cold deformation hardening effect of the material during the stamping of the stainless steel stamping elbow, the strength and rigidity of the stamping are high.

2. The size and shape accuracy of the stainless steel stamping elbow are determined by the mold.

3. The production rate of stainless steel stamping elbows is relatively good, and the operation is simple, easy to realize mechanization and automation. Because stamping relies on stamping dies and stamping equipment to complete processing and production, the stroke frequency of ordinary presses is about dozens of times per minute, and high-speed pressure can reach hundreds or even thousands of times per minute. Each stamping stroke may produce a stamping part.

4. Stainless steel stamping elbows have less debris, so less raw material waste, and no other heating equipment is required, so it is a material-saving and energy-saving processing method.

5. The size range of stainless steel stamping elbows that can be processed is small.

Stainless steel elbows are the weak link in the pipe system. The performance of the pipeline is mainly determined by the working capacity of the stainless steel elbow. The working capacity of the stainless steel elbow is related to the stress state it is in. Calculation and on-site measurement of the working stress of pipe fittings found that the arc starting point of the stainless steel elbow is particularly sensitive to external loads. In addition to the external loads such as internal pressure and deadweight, the main external loads are caused by the thermal expansion of the pipe metal during the start-up process of the pipe system, the vibration of the pipe system, and the abnormal operation of the support and hanger. When the arc starting section of the stainless steel elbow is a butt weld, these changing external loads will cause the weld to be in a complex stress state, seriously weaken the weld strength, reduce the working capacity of the stainless steel elbow, and shorten the service life of the stainless steel elbow. For this reason, from a design perspective, the interface of the butt-welded stainless steel elbow is changed to a straight section butt, that is, the design of a stainless steel elbow with a straight section is conducive to the butt weld, improves the weld quality, and improves the service life of the stainless steel elbow.

1. The center positions of the two ends are different

The center points of the two ends of the stainless steel eccentric reducer are not on the same axis.

The center points of the two ends of the stainless steel concentric reducer are on the same axis.

2. Different operating environments

One side of the stainless steel eccentric reducer is flat. This design facilitates exhaust or liquid drainage and facilitates maintenance. Therefore, it is generally used for horizontal liquid pipelines.

The center of the stainless steel concentric reducer is on a line, which is conducive to fluid flow and has less interference with the flow pattern of the fluid during diameter reduction. Therefore, it is generally used for diameter reduction of gas or vertical liquid pipelines.

3. Different installation methods

Stainless steel eccentric reducers are characterized by simple structure, easy manufacturing and use, and can meet a variety of pipeline connection needs. Its application scenarios mainly include:

Horizontal pipe connection: Since the center points of the two ends of the stainless steel eccentric reducer are not on the same horizontal line, it is suitable for the connection of horizontal pipes, especially when the pipe diameter needs to be changed.

Pump inlet and regulating valve installation: The top flat installation and bottom flat installation of the stainless steel eccentric reducer are suitable for the installation of the pump inlet and regulating valve respectively, which is beneficial to exhaust and discharge.

Stainless steel concentric reducers are characterized by less interference to fluid flow and are suitable for reducing the diameter of gas or vertical liquid pipelines. Its application scenarios mainly include:

Gas or vertical liquid pipeline connection: Since the center of the two ends of the stainless steel concentric reducer is on the same axis, it is suitable for the connection of gas or vertical liquid pipelines, especially where diameter reduction is required.

Ensure the stability of fluid flow: The stainless steel concentric reducer has little interference with the fluid flow pattern during the diameter reduction process and can ensure the stability of the fluid flow.

4. Selection of eccentric reducers and concentric reducers in practical applications

In actual applications, appropriate reducers should be selected according to the specific conditions and needs of pipeline connections. If you need to connect horizontal pipes and change the pipe diameter, choose stainless steel eccentric reducers; if you need to connect gas or vertical liquid pipes and change the diameter, choose stainless steel concentric reducers.