Qingdao Tune Technology Co., Ltd. builds Shower Trailers at its 4,500-square-meter production site in Shandong, China. These are self-contained mobile wash units used at disaster relief camps, wildfire staging areas, mining and oilfield sites, construction projects, glamping resorts, and multi-day events. TUNE offers 1-stall, 4-stall, and 8-stall models, with onboard freshwater and greywater tanks, propane water heaters, and insulated wall panels.
The main frame is hot-dip galvanized to ASTM A123, so the zinc coating covers both the inside and outside of the steel tubing. This protects the subframe against constant moisture, cleaning chemicals, and road salt. The subfloor uses structural aluminum box tubes with composite honeycomb panels on top. A heat-welded marine-grade PVC membrane covers the floor and curves up the lower wall by about 6 inches. This detail keeps water from pooling at the base of the walls and helps the floor hold up under heavy daily use.
Exterior walls and ceiling panels use 50 mm injected polyurethane foam sandwich panels with an R-16 thermal rating. Freshwater lines and drainage sumps can be fitted with self-regulating 120V heat-trace cables inside closed-cell insulation sleeves. Roof-mounted 13,500 BTU heat pump units provide climate control. With these options, a Shower Trailer can operate at ambient temperatures down to about -20°C without pipe freezing, which suits alpine, winter construction, and cold-region relief work.
Heating is provided by commercial-grade tankless liquid propane water heaters arranged in a parallel manifold. Depending on the model, combined output ranges from about 398,000 BTU/hr to over 796,000 BTU/hr. This supports a continuous flow of 14 to 28 GPM with a 45°F temperature rise. Thermostatic mixing valves hold the outlet at a stable 105°F, so users do not experience sudden temperature drops when several stalls are in use at the same time.
The drainage assembly uses 2-inch ABS waste pipes set at a sloped gradient toward a central stainless steel sump. Dual 0.75 HP submersible macerator pumps are controlled by magnetic float switches. The system can discharge to external bladder tanks or a municipal sewer connection at rates up to 50 GPM. Inline stainless steel mesh strainers protect the pump impellers from soap residue, lint, and small debris.
The 1-stall Portable Shower is built on a single-axle chassis rated at 3,500 lbs GVWR. It carries a 110-gallon freshwater tank and a 130-gallon greywater tank. A 12V demand pump delivers 4.5 GPM at 50 PSI, and a 45,000 BTU propane heater supplies hot water. This model suits small crews and VIP event use. The 4-stall model sits on a tandem-axle chassis rated at 7,000 lbs GVWR with dual electric brakes. It carries a 260-gallon fresh tank and a 380-gallon greywater tank, and can process about 45 bathers per hour. The 8-stall model uses a triple-axle chassis rated at 14,000 lbs GVWR. It carries eight private suites, quad 199,000 BTU tankless heaters, and external utility quick-connect ports. It can handle about 120 bathers per hour for large camps and festivals.
Each stall includes a slip-resistant shower pan, fold-down seating bench, clothes hooks, mirror, and LED occupancy light. Splash-proof changing areas are available on larger models. Interior wall assemblies use marine-grade anti-microbial panels, which are intended to support hygiene standards in shared-use facilities. Fixtures are stainless steel, and the layout is designed for quick wipe-down between shifts.
Emergency management agencies deploy them after earthquakes, hurricanes, and floods. Remote resource companies use them at oilfield, timber, and hard-rock mining sites, often connected to diesel generators and bulk water bladders. Event producers place them at boutique glamping resorts, corporate retreats, and multi-day endurance races. For events that also need restroom facilities, a Toilet Trailer can be paired with the shower unit on the same site.
Before shipment, each trailer completes a 24-hour hydrostatic pressure test at 60 PSI across freshwater lines, propane piping, and drainage manifolds. All 12V DC and 110V/220V AC wiring undergoes high-potential insulation testing. High-pressure water spray checks window seals and door gaskets for rain penetration. After final approval, the unit is wrapped in protective ocean shrink-wrap, secured with wheel chocks, and loaded into containers. TUNE provides a 12-month structural factory warranty and technical wiring schematics.
Shower Trailers can be supplied with CE, ISO 9001, DOT, EPR, COC, and NSF-aligned documents where required. TUNE holds Alibaba Gold Supplier status and has completed regular third-party inspections by SGS and Intertek. Certificate numbers, scope, and validity can be provided before ordering.
Q: How many people can a Shower Trailer serve?
A: The 1-stall unit suits small crews or VIP use. The 4-stall model handles about 45 bathers per hour. The 8-stall model handles about 120 bathers per hour. Actual capacity depends on water supply, heater output, and how long each person showers.
Q: What utilities are needed on site?
A: The trailer carries its own freshwater and greywater tanks, so it can run off-grid. It needs propane for the water heaters and either a generator or shore power for pumps, lighting, and climate control. Larger models can connect to external water bladders and sewer lines.
Q: Can it be used in winter?
A: Yes, with the cold-weather package. Heat-traced lines, insulated sumps, and heat pump climate control allow operation down to about -20°C.
Q: How often do the tanks need servicing?
A: Freshwater refill and greywater pump-out intervals depend on tank size and daily use. The 8-stall model holds 650 gallons of greywater and is designed for high-volume sites with scheduled servicing.
Q: What after-sales support is included?
A: TUNE offers a 12-month structural warranty, remote technical support, and shipment of common spare parts such as pumps, heaters, faucets, and electrical components. Specific terms are stated in the contract.
