What is BA grade, EP grade stainless steel pipe?

BA (Bright Annealing) Bright annealing

In the manufacturing process of the steel tube, the grease grains used for lubrication will also be deformed due to processing. In order to avoid the grease remaining in the steel tube, argon is used as the furnace atmosphere at high temperature during annealing, and the argon is combined with carbon and oxygen on the surface of the steel tube to further clean the surface of the steel tube to produce a bright surface effect. This use of pure argon annealing heating and rapid cooling, The way of brightening the surface is called radiance annealing. Although the use of this way to brighen the surface can keep the steel pipe fully clean without any foreign pollution. However, the brightness of this surface if compared with other polishing methods, mechanical, chemical, electrolysis will have the feeling of fog. Of course, the effect is also related to the content of argon and the number of heating.

EP (Electro Polishing)

Electrolytic polishing is the use of anode treatment, by the principle of electrochemical, properly adjust the voltage, current, acid composition, and polishing time, not only can make the surface to achieve bright, smooth, clean effect, but also can improve the surface of the corrosion resistance, so it is the best method of lighting the surface, of course, its cost and technology are also improved a lot.