Four Suggestions For Storing Black Steel Square Tube

(1) Keep the warehouse clean

1. After the materials are put into storage, they should be inspected frequently. If there is any rust, the rust layer should be removed;

2. For square and rectangular pipes that are severely rusted, they should not be stored for a long time after rust removal and should be used as soon as possible;

3. Before putting black steel square tubes into storage, care should be taken to prevent them from being exposed to rain or mixed with impurities. Materials that have been exposed to rain or stained should be cleaned using different methods according to their properties;

4. Generally, there is no need to apply oil after cleaning the steel surface. However, for high-quality steel, alloy thin steel plates, thin-walled pipes, alloy steel pipes, etc., after rust removal, both the inner and outer surfaces need to be coated with anti-rust oil before storage.

(2) Reasonable stacking

1. Angle steel and channel steel should be stacked in the open air, that is, the mouth should be facing down. I-beams should be placed upright, and the groove surface of the steel should not be facing upward to avoid water accumulation and rust;

2. There should be a certain channel between stacks. The inspection channel is generally 0.5m. The access channel depends on the size of the square and rectangular pipe and the transportation machinery and is generally 1.5-2.Om;

3. Steel sections stacked in the open air must have wooden mats or strips of stone underneath, and the stacking surface should be slightly tilted to facilitate drainage. Pay attention to placing the materials straight to prevent bending and deformation;

4. The bottom of the stack should be elevated, solid, and flat to prevent the material from getting damp or deformed;

5. The principle requirement for stacking is to stack according to varieties and specifications under the conditions of stable stacking and ensuring safety. Materials of different types should be stacked separately to prevent confusion and mutual corrosion;

6. It is prohibited to store items that corrode square pipes near the stacking position;

7. Materials of the same kind are stacked separately according to the order in which they are put into storage, so as to facilitate the implementation of the first-in-first-out principle;

8. The stacking height shall not exceed 1.2m for manual operation, 1.5m for mechanical operation, and the stack width shall not exceed 2.5m;

9. The bottom of the stack should be raised. If the warehouse is on a sunny cement floor, the height should be 0.1m; if it is a mud floor, it must be raised 0.1m. 2~0.5m. If it is an open-air venue, the cement floor should be raised by 0.3-O.5m, and the sand and mud surface should be raised by 0.5-O.7m.

(3) Suitable warehouse

1. Do not pile them together with acid, alkali, salt, cement, and other corrosive materials in the warehouse. Different types of steel should be stacked separately to prevent confusion and contact corrosion;

2. Small and medium-sized carbon steel square tubes, wire rods, steel bars, medium-diameter steel pipes, steel wires, and steel wire ropes, etc., can be stored in well-ventilated sheds, but must be covered with thatch;

3. The warehouse should be selected based on geographical conditions. Generally, ordinarily, closed warehouses are used, that is, warehouses with walls on the roof, tight doors and windows, and ventilation devices;

4. The site or warehouse where square and rectangular pipes are kept should be kept in a clean place with smooth drainage and away from factories and mines that produce harmful gases or dust. Weeds and all debris should be removed from the site and the steel should be kept clean;

5. The warehouse is required to be ventilated on sunny days, closed to prevent moisture on rainy days, and a suitable storage environment must be maintained at all times;

6. Large steel sections, rails, steel plates, large-diameter steel pipes, forgings, etc. can be stacked in the open air;

7. 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 corrosive metal products can be stored in the warehouse.

(4) Protective packaging

The preservatives or other plating and packaging applied to the square and rectangular pipes before leaving the factory are important measures to prevent the material from rusting. Care must be taken to protect them during transportation loading and unloading, and they must not be damaged, which can extend the storage period of the materials.