First, what are the requirements for the storage environment of precision steel pipes?
The core causes of rust on precision steel pipes are moisture, oxygen, and contaminants; therefore, environmental control is fundamental to rust prevention.
Humidity Control: The humidity in the storage warehouse should be kept stable below 50%-60%. Dry, well-ventilated, enclosed warehouses are preferred, avoiding open-air storage. If temporary open-air storage is necessary, a rain shelter must be built, and moisture-proof mats (such as rubber mats or wooden boards) must be laid on the ground to prevent the steel pipes from directly contacting the damp ground.
Temperature Control: Avoid drastic temperature fluctuations in the warehouse. Excessive temperature differences can easily cause moisture in the air to condense on the surface of the steel pipes, forming “condensation.” Moisture can be absorbed by installing ventilation equipment (exhaust fans, dehumidifiers) or placing desiccants (silica gel, quicklime), especially during the rainy season when dehumidification frequency needs to be increased.
Keep away from pollution sources: Strictly prohibit storage in the same warehouse as corrosive substances such as acids, alkalis, salts, and cement. The volatile gases or leaked liquids from these substances will accelerate the corrosion of the steel pipes. Also, avoid contact with dust and oil; clean the warehouse floor of any residual impurities before storing the pipes.
Second, what are the methods for stacking precision steel pipes?
Scientific stacking not only prevents steel pipe deformation but also reduces the risk of corrosion. The key is “isolation, ventilation, and reasonable load-bearing.”
Bottom isolation: Before stacking, the bottom of the steel pipes must be elevated with wooden blocks (spaced no more than 1.5 meters apart) or special supports, at a height of no less than 10 centimeters, to ensure air circulation and prevent moisture penetration from the ground. The wooden blocks must be dry and free of mold to avoid carrying moisture.
Layered stacking: Stack steel pipes according to their specifications (diameter, length). Steel pipes of the same batch and specification should be placed together to avoid mixing steel pipes of different materials (e.g., contact between carbon steel and stainless steel may cause galvanic corrosion). Stacking height should not be too high. Steel pipes with a diameter ≤50mm should be stacked no higher than 1.5 meters, and larger diameter pipes no higher than 1 meter, to prevent deformation or collapse that could damage the coating.
Maintain ventilation: Longitudinal and transverse ventilation gaps must be reserved during stacking. The spacing between each row of steel pipes should be no less than 5 cm, and a 1-2 meter passage should be left between stacks to facilitate air circulation and daily inspection, avoiding the formation of localized “humid areas.”
Third, how to protect precision steel pipes?
Depending on storage period and usage requirements, the following protective methods can be adopted to further block rust paths.
Surface cleaning: Before storage, oil, dust, and moisture must be removed from the surface of the steel pipes. Wipe with a clean cotton cloth. If there is oil, clean with a neutral detergent first, then dry with compressed air to ensure no residual impurities remain on the surface.
Rust-preventive coating: For precision steel pipes stored for extended periods (over 3 months), a special rust-preventive oil (such as hard film rust-preventive oil or volatile rust-preventive oil) can be applied to the surface. The coating should be applied evenly, ensuring no missed areas or accumulation. Rust-preventive paint can also be used, suitable for applications where surface finish requirements are not high.
Sealed packaging: After applying the rust-preventive oil, the pipes can be sealed in plastic film or vapor-phase rust inhibitor paper. During packaging, internal air must be expelled to prevent moisture ingress. For smaller batches of steel pipes, they can be placed in sealed rust-preventive boxes with vapor-phase rust inhibitors to enhance rust prevention.
Temporary protection: If the steel pipes need to be temporarily stored in the warehouse (within 1 month), they can be wrapped in dry cotton cloth to prevent direct exposure to air. The cloth should be checked regularly for moisture and replaced promptly.
Fourth, what are the daily management practices for precision steel pipes?
Regular inspection and maintenance during storage are crucial to preventing rust spread, requiring a comprehensive management mechanism.
Regular Inspections: Inspect at least weekly, focusing on rust spots and condensation on the steel pipe surface, warehouse humidity levels, rust-preventive coating damage, and intact packaging. Increase inspection frequency during the rainy season (every 2-3 days).
Timely Handling: If minor rust spots are found on the steel pipe surface, immediately remove them gently with fine sandpaper and then apply rust-preventive oil. If the rusted area is large, re-clean and re-treat the surface. If warehouse humidity exceeds the standard, turn on dehumidifiers or replace the desiccant promptly.
Avoid Collisions: Handle with care during transport and stacking to avoid violent collisions between steel pipes or between steel pipes and tools, preventing damage or scratches to the surface coating and creating opportunities for rust.
First-In, First-Out (FIFO): Establish a FIFO system to prevent some steel pipes from accumulating at the bottom of the warehouse for extended periods, reducing the risk of rust due to prolonged storage.
Post time: Jan-09-2026