Mobile Toilet Manual Welding

Mobile toilet manual welding refers to the movable public sanitation facilities manufactured through manual processes, combining the flexibility of manual welding with the advantages of mobility. It is widely used in municipal areas, scenic spots, construction sites, and other scenarios.

Core Processes and Structural Features

1. Main Frame Welding
   Metal materials such as stainless steel or galvanized steel pipes are used, and welded through manual arc welding, gas shielded welding, and other processes. Manual welding offers high flexibility, accommodating small-batch and customized production needs while ensuring the strength and sealing of connections. For example, frame welds must meet the requirements of the national standard GB/T 14952.1-2017: the penetration depth should reach more than 70% of the base material thickness, and surface depressions or protrusions should not exceed 0.5mm. Acceptance can be verified through ultrasonic testing or magnetic particle inspection.

2. Wall and Structural Design
   Walls often use metal frames combined with soundproof panels or color-coated steel sheets, balancing sound insulation and lightweight requirements. Structural forms include single units (1-2 square meters, equipped with squat toilets, sinks, etc.), multi-unit connected structures (to accommodate high foot traffic), and modular combinations (for easy transportation and expansion). High-end models are also equipped with air conditioning, smart sensor flushing, and other facilities.

Material Selection and Corrosion Prevention Key Points

1. Comparison Between Stainless Steel and Galvanized Steel Pipes
   Stainless steel is corrosion-resistant and easy to clean, suitable for outdoor environments; galvanized steel pipes are lower in cost but require surface spraying with anti-rust paint. In humid scenic spot environments, light square steel is prone to rusting from the inner wall due to its closed cross-section, while angle steel becomes a weak point in corrosion prevention due to insufficient paint film on its edges. The national standard GB/T 13912 requires that the average thickness of the hot-dip galvanized layer should be ≥85μm, with local thickness ≥70μm. Acceptance testing should be conducted using a magnetic thickness gauge. If more than 20% of the area has a thickness below 60μm, the corrosion prevention performance is not up to standard.

2. Acceptance Focus
   Purchasing managers need to verify the material quality certificates and welding procedure qualification reports, confirming that the light square steel is of grade Q235B or higher, and the edge thickness of the angle steel is ≥3mm. At the same time, attention should be paid to the corrosion prevention treatment of the inner cavity of the frame to avoid manufacturers only spraying the outer surface and neglecting inner cavity rust prevention, which could lead to rusting through within three years.

Application Scenarios and Process Impacts

In high-humidity and strong-wind environments such as scenic spots, welding quality and material selection directly affect service life. Manufacturers with strict process control can maintain a weld pass rate of over 98% and trace each process through the ISO9001 quality system to ensure structural safety. For example, the integrated welded park mobile toilet produced by Chongqing Baiyi Hengjiu Metal Products Co., Ltd. has improved corrosion resistance and wind resistance through optimized processes.