Storage Management Methods Of Various Steel Pipe Stocks

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Choose the right venue and storeroom:

1) The site or warehouse where the steel is kept should be selected in a clean and well-drained place away from factories and mines that produce harmful gases or dust. Weeds and all debris should be removed on the site, and the steel should be kept clean.

2) Do not stack in the warehouse with materials that are corrosive to steel, such as acids, alkalis, salts, and cement. Different types of steel should be stacked separately to prevent confusion and prevent contact corrosion.

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

4) Small and medium-sized steel, wire rods, steel bars, medium-caliber steel pipes, steel wires, and wire ropes can be stored in well-ventilated sheds, but they must be up and down.

5) —Some small steels, thin steel plates, steel strips, silicon steel sheets, small-caliber or thin-walled steel pipes, various cold-rolled and cold-drawn steels, and expensive and easily corroded metal products can be stored in the warehouse.

6) Treasury should be selected according to geographical conditions. Generally, general closed warehouses are used, that is, warehouses with roofs and walls, tight doors and windows, and ventilation facilities.

7) Treasury requires ventilation in sunny days, and close moisture-proof in rainy days, and often maintain a suitable storage environment.

Reasonable stacking, first release:

1) The principle of stacking is required to be palletized according to variety and specifications under the conditions of stable palletizing and ensuring safety, and different types of materials must be palletized separately to prevent confusion and mutual corrosion.

2) It is forbidden to store articles that have a corrosive effect on steel near the stacking site.

3) The bottom of the stack should be high, solid and flat to prevent the material from being wet or deformed.

4) The same materials are stacked according to the human bank, which facilitates the implementation of the advanced first-come-first-served principle.

5) The steel sections stacked in the open air must have wooden pads or slabs underneath. The stacking surface is slightly inclined to facilitate drainage, and the materials should be placed flat to prevent bending and deformation.

6) The height of stacking should not exceed 1.2m for manual operation, 1.5m for mechanical operation, and 2.5m for stacking width.

7) A certain aisle should be left between the stack and the stack. The inspection path is generally 0.5m. The access path depends on the size of the material and the transportation machinery, and is generally 1.5-2.0m.

8) The bottom of the stack should be elevated. If the warehouse is a cement floor with a rising sun, the height should be 0.lm; if it is muddy, the height should be 0.2-0.5m. If it is an open-air site, the cement floor is 0.3-0.5m high and the sand and mud surface is 0.5-0.7m high.

9) If it is piled in the open air, the angle steel and channel steel should be laid down, that is, the mouth should be down, and the I-shaped steel should be placed vertically.

Protective box packaging:

Carbon steel seamless pipe manufacturer is a preservative or other plating and packaging that is applied before leaving the factory. This is an important measure to prevent corrosion of the material. It must be protected during transportation and loading. Shelf life of materials.

Keep the warehouse clean and strengthen the maintenance of materials

1) Before entering the warehouse, pay attention to prevent rain or mixed impurities, and use different methods to clean the material that has been rained or soiled. For example, use a wire brush with high hardness and a cloth with low hardness. Cotton and other things.

2) The material should be checked frequently after the warehouse, if there is any rust, the rust layer should be removed.

3) After the surface of general steel is cleaned, it is not necessary to apply oil, but high-quality steel, alloy thin steel plates, thin-walled pipes, and alloy steel pipes need to be coated with anti-rust oil after derusting before storing.

4) For severely rusted steel, it should not be stored for a long time after derusting, and it should be used as soon as possible.

Steel appearance quality inspection

When performing the appearance quality inspection before the steel warehouse, you must pay attention to the following:

1) When observing the surface of hot rolled steel with naked eyes, there must be no cracks, folds, scars, delaminations or inclusions. Indentation and partial protrusion, depression, and pitting are allowed, but its height or depth must not be greater than the relevant technical standards. Partial defects are allowed to be removed, but lateral removal is not allowed. The depth of removal from the actual size must not exceed the allowable negative deviation value of the steel of that size.

2) When observing the surface of cold-drawn steel with the naked eye, the surface should be clean, smooth, bright or dull, without cracks, scars, inclusions, hair lines, folds, and scale. Individual small scratches, rips, dark spots, concave surfaces, pits, etc. are allowed with a depth not greater than the nominal size deviation from the actual size.

3) The appearance of profile steel should be smooth and tidy, and its roundness, side width, height, thickness, length, twist, slope, scission, wave bend and unevenness shall not exceed the deviations specified in the relevant standards.

4) The section steel should be straightened, the steel plate should be flattened, and the edges must be cut at right angles. In addition to the above requirements, the rail ends and bolt hole surfaces must be free of shrinkage, delamination and cracks, and both ends should be milled flat.

5) The wall thickness, surface sugar, roundness and unevenness of the steel pipe shall all meet the technical standards. The joint threads of threaded steel pipes, galvanized steel pipes and geological pipes shall be oiled, and protective rings shall be provided.

6) Galvanized steel and galvanized steel pipe shall not have defects such as cracks, layer formation and missing plating.

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