There are many common industrial materials on the market today, such as stainless steel pipes, etc. When welding these materials, you must pay attention to the welding method, so as to ensure that the welding is stronger. So, how to weld stainless steel pipes? What are the types of stainless steel pipes? We will explain it to you.

How to weld stainless steel pipes

1. In order to ensure the welding quality of pipes, welders must learn training and take exams, and they must meet the standards before joining the job. When a welder wants to weld a seamless steel pipe, in addition to the basic theory, he must figure out the operation method. The pipe welding process may include several types of postures: downward welding, overhead welding and overhead welding (when the pipe cannot rotate). Choose a good welding method. The size of the flow should take into account the formation of overhead welding and overhead welding (some pipes are not very large and are formed at one time, so the current cannot be adjusted halfway). The stability and formation of the arc should be controlled during the process, and it can be swayed appropriately. , to shape and blend well with the necessary shaking.

2. As long as the pipe material is high-toughness carbon steel, including high-temperature, pressure-resistant, wear-resistant, and low-temperature-resistant carbon steel seamless steel pipes, the welding process must be carefully implemented. In order to avoid the tendency of austenite structure and gaps to occur due to outdoor welding work, the general stipulations in the processing technology are that the welding wire must be selected, baked as required and sent to the welder for use, and both sides of the weld must be degreased and cleaned before welding. Water, remove rust, remove dirt, clean, keep the energy of the welding line as small as possible, try to avoid shaking during the welding process, and the arrangement of a weld should try to have a quenching effect on the thermally affected area. Cool slowly after welding and cover these countermeasures with asbestos cloth.

What are the types of stainless steel pipes?

1. According to the application fields, welded seamless steel pipes have general uses and ultra-high pressure and high temperature uses. The pipes used in the latter are usually For special carbon steel, it is necessary to consider and deal with the problem of expansion gaps in the welding seam during the welding process and the physical properties of the pipe fittings in the heat-damaged area will not undergo major changes due to the impact of the welding process.

2. According to the wall thickness, pipes made of thinner materials such as strip steel can be welded with high frequency. Some thick-walled pipes can be welded with protective gas; the wall thickness exceeds 2mm pipes can be welded by argon arc.

3. According to the size of the hole diameter of the pipe fittings, the small ones can only be welded on one side and the technician can drill into the pipe to perform double-sided welding. Single-layer welding places technical requirements on the welder to ensure that the single-layer welding is formed in two places. Through the bearing steel ball test, it is ensured that the cross-section capacity and weld formation meet the design requirements.

For the welding of stainless steel pipes, it is recommended that specialized personnel be hired to weld. Everyone should pay attention to the construction methods and methods when working. The above is a detailed introduction on how to weld stainless steel pipes and the types of stainless steel pipes. You can usually learn more about the corresponding professional knowledge and select appropriate materials according to the types of stainless steel pipes to ensure the beauty after welding.