Mobile Toilet Coatings

The common types of coatings used for mobile toilets and their relevant standards are as follows:

The selection of coatings for mobile toilets needs to balance functionality and aesthetics, with different coating requirements for various components. Based on available information, the application of coatings for mobile toilets mainly falls into two categories: external decorative coatings and frame protective coatings.

I. External Decorative Coatings: Application of Stone-like Paint

The four-stall mobile toilet produced by Dezhou Hongtu Metal Products Co., Ltd. is coated with stone-like paint on its exterior. Stone-like paint is a stone-imitation coating that uses natural colored sand as the aggregate and synthetic resin emulsion as the binder. It has the following characteristics:

• Strong decorative effect: By combining colored sands of different particle sizes, it can simulate the textures of natural stones such as granite and marble, enhancing the aesthetic appeal of the mobile toilet.
• Excellent weather resistance: The resin emulsion forms a dense coating that effectively resists environmental erosion from ultraviolet rays and acid rain, extending the lifespan of the coating.
• Good stain resistance: The surface is dense and hydrophobic, making it less prone to adsorbing dust or stains and reducing the frequency of cleaning and maintenance.

II. Frame Protective Coatings: Standard Requirements for Anti-rust Paint

The steel structural frames of mobile toilets (such as square tubes, channel steels, and I-beams) require anti-rust paint for corrosion protection. The specific standards are as follows:

• Pre-coating treatment: The frames need to undergo polishing treatment to remove oxide scales, burrs, and oil stains generated during welding, ensuring good adhesion of the coating.
• Coating thickness and number of coats: Three coats of anti-rust paint should be applied, with each coat allowed to dry before applying the next (the specific drying time depends on ambient temperature and humidity) to ensure a uniform coating without sagging.
• Steel thickness requirements: The wall thickness of the frame steel should be ≥3mm, and the thickness of the base channel steel should be ≥5mm. The welds should be fully coated with three coats of anti-rust paint to prevent a decrease in structural strength due to weld corrosion.
• Material combination suggestions: The frame material should primarily be galvanized steel or stainless steel, and the surface can be paired with decorative materials such as aluminum-plastic panels or anti-corrosion wood to further enhance corrosion resistance and aesthetics.

III. Information on Other Coating-related Enterprises

Although Beijing Yiqi Environmental Protection Technology Co., Ltd. has not specified the exact types of coatings used for mobile toilets, as a coating sales enterprise, it may offer various anti-corrosion coatings suitable for metal structures (such as epoxy zinc-rich primers and polyurethane topcoats), which should be selected based on actual needs.

Summary: The selection of coatings for mobile toilets should consider the usage scenario and material characteristics. For external decoration, stone-like paint is preferred to enhance aesthetics, while for steel structural frames, strict adherence to anti-rust paint coating standards is essential to ensure long-term corrosion resistance.