Size:
2"(50.8mm)
3"(76.2mm)
4"(101.6mm)

There are various types of stainless steel. According to the organizational structure, the normal temperature state can be divided into two categories: one is 304, 321, 316, 310, etc; The other type is martensite or ferrite type: such as 430, 420, 410, etc., which is non-magnetic or weakly magnetic. Martensite or ferrite is magnetic, and is generally used as home decoration for decorative tube plates and water pipes Stainless steel water pipe Most of them are type 304 materials. Generally speaking, they are non-magnetic or weak magnetic, but because Pipe manufacturer The magnetic properties will also appear if the composition fluctuates or the production and processing conditions are different due to the production conditions, but this cannot be considered as fake or substandard. What is the matter? There is no magnetism or weak magnetism, while martensite or ferrite is magnetic. Because of component shrinkage or thermal negligence during smelting, 304 stainless steel will have a small amount of martensite or ferrite mechanism Domestic water pipe It will contain very weak magnetism.

In addition, after cold drawing, the organization structure of home installed stainless steel water pipes will also be transformed into martensite. The larger the cold drawing deformation value, the more martensite transformation, and the greater the magnetic properties of the steel, just like a batch of steel chains, produced Φ 76 tubes, no obvious magnetic induction, manufactured Φ 9.5 The magnetic induction of the pipe is obvious due to the large deformation of the cold bend. The manufacturer and rectangular square pipe become larger than the enlarged round steel pipe due to the shape, which is a part of the folding. The shape change is violent, and the magnetism is more obvious.

It is very important to clearly point out that the magnetism of stainless steel caused by the upper edge is not the same level as that of stainless steel of other materials, such as 430 and carbon steel. In other words, the magnetism of 304 steel shows weak magnetism from beginning to end.