How to distinguish the advantages and disadvantages of 304 stainless steel pipe?

[guidebook] :

In the application of stainless steel pipe, 304 stainless steel pipe is one of the most common raw materials. But there are many people do not know how to select 304 stainless steel pipe. Then how to distinguish the advantages and disadvantages of 304 stainless steel pipe?

 

Distinguish 304 stainless steel pipe advantages and disadvantages of the method

1, shrinkage hole

Shrinkage hole is what it is, shrinkage is stainless steel steel liquid state in the mold inside the contraction, sometimes because of the influence of the environment, such as air, temperature, etc. and the formation of a number of shrinkage cavities, with a professional point of view called shrinkage holes.

2, transverse crack

Transverse cracking is easier to understand, that is, the surface of the stainless steel pipe transverse cracks, generally in the ingot period will occur transverse crack phenomenon, but most of the depth is shallow.

3、Longitudinal crack

Know the transverse crack, then the meaning of longitudinal crack is obvious. Longitudinal crack is the surface of the ingot longitudinal cracks, generally appear in the upper and corner of these places, in the upper longitudinal cracks will be deeper.

4, scarring

Said above in the upper part of the stainless steel tube or the corners of those places may appear longitudinal cracks, then in the lower part of the region will sometimes appear shell skin makeup or tumor makeup of the metal spattering sticking, looks like a layer of scarring, so it is called scarring. But this kind of problem is actually rare.

5, surface porosity

304 stainless steel tube pores this is also very good to understand, that is, in the stainless steel surface can be visible to the naked eye a lot of tiny holes, these pores are more shallow, like the transverse crack.