There are many types of stainless steel pipe fittings, includingCrThe quantity is greater than or equal to13%Alloy steel that does not rust in the atmosphere. There are austenitic stainless steel, ferritic stainless steel, martensitic stainless steel, etc. Stainless steel generally does not have magnetism. Austenitic stainless steel does not have magnetism, but ferritic stainless steel does, but it is relatively weak. Different types of stainless steel have varying abilities to resist corrosion and also differ in their resistance to corrosion from different media.

　　The difference between carbon steel and stainless steel pipe fittings is generally believed to lie first in terms of corrosion resistance. However, in practical applications, stainless steel, with its outstanding various properties, plays an irreplaceable role that other steel types cannot match. For instance, there are some high-temperature resistant stainless steels. Another example is that the surface characteristics of stainless steel are widely used in decorative materials. Moreover, the excellent mechanical properties of stainless steel make it applicable in various manufacturing industries.
Stainless steel pipe fittings
　　Austenitic stainless steel is due to the addition of higher levels of chromium and nickel in the steel(Containing chromium18%Left and rightNiin4%The above)The internal structure of steel presents a state called austenite, which is non-magnetic and cannot be attracted by a magnet. It is often used as a decorative material, such as stainless steel pipes, towel racks, tableware, stoves, etc.

　　Martensitic stainless steel should be used for making knives and scissors. Because knives and scissors have the function of cutting objects, they need to have sharpness and hardness. This type of stainless steel undergoes heat treatment to cause internal structural transformation and increase hardness before it can be used as knives and scissors. However, the internal structure of this type of stainless steel is tempered martensite, which is magnetic and can be attracted by magnets. Therefore, it cannot be simply determined whether it is made of stainless steel by whether it is magnetic or not.

　　Introduction to Stainless Steel tees:

　　1Draw an arc on the bevel surface and immediately retreat to the starting welding point at the root of the bevel (usually)6Before the point position10mmSir/Madam, when you see the start of melting, quickly add the welding wire to make it fuse with the base material all the way. At this time, you can see the molten liquid and slag flowing evenly through the bevel into the pipe to form a molten hole. The welding torch should swing slightly in a zigzag shape and move upward a little faster. The welding wire should never be separated from the argon gas protection and should be attached to the gap at the blunt edge of the bevel. The intermittent wire feeding method should be adopted, pulling and feeding, drop by drop, to fill into the molten pool.

　　2During the welding process, short arc operation should be maintained. The handle should be stable, and the wire feeding should be clean and efficient. Pay attention to the distance between the welding wire and the tungsten electrode to prevent "tungsten tapping". Otherwise, it should be ground clean before re-welding.

　　3The key to double-sided formation in base welding lies in controlling the size of the weld holes and ensuring the same shape of the stainless steel three-way fittings.

　　4During the base welding process, it is necessary to ensure that the welding wire melts evenly and forms a thin layer of slag that penetrates evenly into the pipe opening to protect the weld seam. This is the reason why fluxed welding wire is used.

　　5After the stainless steel three-way welding, hammering is carried out to make the welding slag fall off. The welding slag inside the pipe can also be dropped by means of compressed air or water flushing, etc., so that a beautiful golden weld seam can be obtained inside the pipe.