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E-mail
2738487025@qq.com
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Phone
18921178801
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Address
No. 568-7 Chunhui Road, Chang'an Street, Huishan District, Wuxi City, Jiangsu Province
Wuxi Ming'an Safety Equipment Co., Ltd
Why did your outdoor storage cabinet rust? Guidelines for Material Selection and Anti corrosion Treatment to Avoid Pits
Date: 2025-12-19Read: 0
Many companies often only focus on capacity and price when purchasing outdoor storage cabinets, but overlook the more critical factors - material and anti-corrosion performance. After less than a year of use, the cabinet began to rust, peel off the paint surface, and even deform the structure, which not only affects its appearance but may also endanger the safety of chemical storage. Well then,Outdoor storage cabinetWhy does it rust? How to scientifically select and effectively avoid pitfalls?
Main cause of rust: mismatched material and usage environment
Although ordinary carbon steel cabinets have low costs, they are highly susceptible to oxidation and corrosion in outdoor high humidity, salt spray (coastal areas), acid rain, or industrial atmospheric environments. If storing acidic and alkaline chemicals, volatile gases can also accelerate metal corrosion.
Suggestion for avoiding pitfalls: Choose materials based on the environment and storage materials——
Ordinary industrial zone: optional hot-dip galvanized steel plate+double-layer epoxy resin spraying cabinet;
Coastal/high humidity areas: prioritize the use of 304 or 316 stainless steel cabinets;
Strong corrosive chemicals: Full PP (polypropylene) material cabinets should be selected to avoid metal contact.
Main cause of rusting 2: substandard surface treatment process
Some low-priced products only undergo simple painting without pre-treatment processes such as phosphating and passivation. The coating adhesion is poor, and it falls off immediately after being washed away by rainwater, losing its protective effect.
Suggestion for avoiding pitfalls: Identify the "three coatings and two baking" or powder electrostatic spraying process. High quality cabinets usually go through multiple processes of degreasing, phosphating, primer, and topcoat, with a coating thickness of ≥ 80 μ m and passing a salt spray test for more than 240 hours (ASTM B117 standard).
Main cause of rusting three: dead corners of water accumulation in structural design
Design defects such as no slope on the top of the cabinet, poor sealing of door seams, and lack of anti water accumulation trays at the bottom can lead to rainwater infiltration and long-term retention, accelerating corrosion.
Suggestion for avoiding pitfalls: Choose an integrated design product with a tilted top cover, silicone sealing strip, fully welded seamless structure, and leak proof storage groove.
Additional reminder: Regular maintenance is equally important. Even high-quality cabinets should have their paint integrity checked every six months and scratches repaired promptly; Clean up the accumulated water and debris around the cabinet, and maintain ventilation and dryness.
In short,Outdoor storage cabinetIt is not an ordinary iron box that can be used immediately after purchase, but a safety facility that requires comprehensive consideration of the environment, chemical properties, and material science. Only by selecting the right materials, identifying the right processes, and paying attention to details can we truly achieve "rust prevention, durability, safety, and compliance".