China J&O Fluid Control Co., Limited


Sanitary Pipe Fittings Characteristics

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Sanitary pipe fittings are used in many industries, such as food, medicine, chemical industry, etc. The material of sanitary pipe fittings is stainless steel, which can be simply divided into three categories: socket-type sanitary pipe fittings, sanitary flange pipe fittings and sanitary welded pipe fittings. Today I want to share with you the three major characteristics of sanitary pipe fittings. Let's take a look:

1. Weldability

The welding performance of Sanitary Pipe Fittings is different for different uses. Some tableware does not require welding performance, including some pot companies. However, most products require good raw material welding performance, such as Class II tableware, thermos cups, steel pipes, water heaters, water dispensers, etc.

2. Corrosion resistance

Many stainless steel sanitary pipe fittings have good corrosion resistance in food, such as first and second category tableware, kitchen utensils, water heaters, water dispensers, etc. Many foreign merchants have also tested the corrosion resistance of sanitary pipe fittings: use NACL aqueous solution to heat to boiling, pour out the solution for a period of time, absorb and dry, weigh the weight loss to determine the degree of corrosion (Note: when the product is polished, because the sandpaper or sandpaper contains Fe, it will cause rust on the surface during the test).

3. Polishing performance (BQ property)

Polishing performance (BQ property) of sanitary pipe fittings. At present, many industries need to polish stainless steel sanitary pipe fittings. Only a few products such as water heaters and water dispenser tanks do not need polishing. The requirements for raw materials are very important. Factors affecting the polishing performance of sanitary pipe fittings:

① Surface defects of raw materials. Such as scratches, pitting, over-pickling, etc.

② Material problems of sanitary pipe fittings. If the hardness is too low, it is not easy to polish (poor BQ), and if the hardness is too low, the surface is prone to orange peel during deep drawing, which affects the BQ. The BQ of high hardness is relatively good.

③ After deep drawing, small black spots and RIDGING will appear on the surface of the area with great deformation, which affects the BQ.

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