Material selection should be based on the characteristics of the medium.

What medium properties should be considered for material selection?

1. Acetic acid is highly corrosive, and ordinary steel is prone to corrosion. Stainless steel is a good material for resisting acetic acid.

2. For high-temperature and dilute acetic acid steam, molybdenum-containing stainless steel chemical pumps can be selected. Under harsh requirements, high-alloy stainless steel or fluoroplastic pumps can be used.

3. For sodium hydroxide solutions with a concentration of 30% and at temperatures below 80°C, steel is widely used.

4. For high-temperature alkali solutions, titanium and titanium alloys or high-alloy stainless steels are often used.

5. The corrosion of ammonia and ammonium hydroxide is slight, and most metals and non-metals are suitable.

6. When using ordinary steel in salt water, paint protection is required. 316 stainless steel is a better choice.

7. Media such as alcohols and ketones are basically non-corrosive, but attention should be paid when selecting rubber seals.

8. The selection of materials for sulfuric acid, hydrochloric acid and nitric acid needs to be considered separately according to factors such as concentration and temperature.

In our company, the selection of pumps is generally divided into two categories:

Metal pumps are suitable for alkaline media, and the materials include 304, 316, 316L and 2205. Fluoroplastic pumps are suitable for acidic media, with the material F46 (for temperatures below 80 °C) and PFA (for temperatures above 80 °C, with a maximum temperature of 120 °C). These two types of pumps are the main products of Anhui Shengshi Datang. 

Welcome everyone to come and buy.