Seamless steel pipes have hollow cross-sections and are widely used as pipes for transporting fluids, such as pipes for transporting oil, natural gas, gas, water and certain solid materials. Seamless pipes have certain corrosion resistance, but if you want to prolong the service life of seamless pipes in some extreme environments, you need to remove the oxide layer on the surface of the product. The main cleaning method is pickling. After cleaning, it needs to be cleaned again with electrolysis.
1. The seamless steel pipe must wear labor protection articles before pickling. The working environment on site should also be checked in detail, mainly to check whether the sling of the steel pipe is in good condition, and work can only be carried out after confirming that it is in good condition.
2. When pickling seamless steel pipes, the pickling method is mainly hydrochloric acid pickling. Generally, the content of hydrochloric acid is preferably 18% to 20%.
3. The staff also need to understand the concentration and temperature of the acid and the tonnage of the pickling pipe in this tank before operation
4. For pickled steel pipes, the weight is controlled between 2 and 5 tons each time, and the time is controlled within 5 to 15 minutes. The time needs to be adjusted according to the weight. During the pickling process of the steel pipe, frequent vibrations are also required. When the pipe is lowered into the acid tank, the steel pipe should be tilted to prevent the hydrochloric acid from accidentally injuring people.
The seamless pipes stored in the warehouse waiting to be put into use need to do the following
In the warehouse, it is not allowed to be piled together with materials that are corrosive to steel such as acids, alkalis, salts, and cement. Different types of steel should be stacked separately to prevent mixing and contact corrosion.
1. Large steel sections, rails, steel plates, large-diameter steel pipes, forgings, etc. can be stacked as needed.
2. Some small steel products, thin steel plates, steel strips, silicon steel sheets, small-diameter or thin-walled steel pipes, various cold-rolled and cold-drawn steel products, and high-priced and easily-corroded metal products can be stored in the warehouse.
3. The warehouse should be selected according to the geographical conditions. Generally, an ordinary closed warehouse is used, that is, a warehouse with a roof, a wall, tight doors and windows, and a ventilation device.
1. The seamless steel pipe must wear labor protection articles before pickling. The working environment on site should also be checked in detail, mainly to check whether the sling of the steel pipe is in good condition, and work can only be carried out after confirming that it is in good condition.
2. When pickling seamless steel pipes, the pickling method is mainly hydrochloric acid pickling. Generally, the content of hydrochloric acid is preferably 18% to 20%.
3. The staff also need to understand the concentration and temperature of the acid and the tonnage of the pickling pipe in this tank before operation
4. For pickled steel pipes, the weight is controlled between 2 and 5 tons each time, and the time is controlled within 5 to 15 minutes. The time needs to be adjusted according to the weight. During the pickling process of the steel pipe, frequent vibrations are also required. When the pipe is lowered into the acid tank, the steel pipe should be tilted to prevent the hydrochloric acid from accidentally injuring people.
The seamless pipes stored in the warehouse waiting to be put into use need to do the following
In the warehouse, it is not allowed to be piled together with materials that are corrosive to steel such as acids, alkalis, salts, and cement. Different types of steel should be stacked separately to prevent mixing and contact corrosion.
1. Large steel sections, rails, steel plates, large-diameter steel pipes, forgings, etc. can be stacked as needed.
2. Some small steel products, thin steel plates, steel strips, silicon steel sheets, small-diameter or thin-walled steel pipes, various cold-rolled and cold-drawn steel products, and high-priced and easily-corroded metal products can be stored in the warehouse.
3. The warehouse should be selected according to the geographical conditions. Generally, an ordinary closed warehouse is used, that is, a warehouse with a roof, a wall, tight doors and windows, and a ventilation device.
