3 Axle 110m³ Curtain Side Semi‑Trailer | 40‑80 Ton Heavy‑Load Trailer for Saudi Long‑Haul Logistics‑Hualu Special Vehicle Manufacturing

1. Product Selling Points Tailored for Saudi Arabian Working Conditions

1. High‑temperature and sand‑proof whole‑vehicle design
   The side curtain uses thickened UV‑resistant PVC material, resisting intense sunlight, blowing sand and sporadic rainfall across Saudi Arabia. It prevents cracking, fading and embrittlement after long‑time exposure under high temperatures. The main frame is constructed from high‑tensile Q345 steel with anti‑corrosion paint finish, well‑suited for dry‑hot desert roads and extends the chassis service life significantly.
2. Large‑volume together with adjustable heavy‑load capacity
   The spacious 110m³ internal compartment matched with reinforced 3‑axle assembly enables variable payload ranging from 40 tons to 80 tons. Palletized goods, bulk supplies and construction materials can be transported flexibly. Fleet owners raise single‑trip shipment volume and lower overall fuel expenditure effectively.
3. Sliding‑curtain design boosts loading‑unloading efficiency
   Detachable vertical posts and fully‑open side‑curtain structure support side forklift loading instead of only rear‑end unloading. It shortens waiting time at warehouses and distribution yards throughout Saudi cities and improves your fleet’s daily turnover.
4. Stable performance adapted to local highway and out‑of‑town roads
   Heavy‑duty suspension reduces vibration on uneven suburban routes and long‑distance highways. Reinforced floor plus abundant lashing points hold cargo tightly and avoid goods shifting during cross‑kingdom transportation.
5. Low‑failure structure saves your later‑stage spending
   Our self‑manufactured chassis and mature axle assembly reduce breakdown probability. Less spare‑part replacement and vehicle downtime help Saudi transport companies gain steady long‑term returns.

2. Detailed Technical Specifications

• Manufacturer: Hualu Special Vehicle Manufacturing Co.,Ltd
• Axle configuration: 3 heavy‑duty axles
• Inner cargo volume: 110 m³
• Loading capacity: 40‑80 tons
• Main beam material: Q345 high‑strength steel; top plate 14mm, bottom plate16mm, web 8mm; automatic submerged‑arc welding ensures frame rigidity
• Curtain material: Reinforced anti‑UV PVC tarpaulin with smooth top sliding rails and adjustable ratchet tensioners for tight sealing
• Suspension system: Heavy‑duty mechanical suspension; air‑suspension available on request for comfortable long‑haul running
• Tire specification: 385/65 R22.5 heavy‑load tires to withstand high‑temperature pavement
• Brake system: Dual‑line air‑brake setup equipped with automatic brake adjusters for reliable braking performance
• King pin: Standard 50# bolt‑in king‑pin compatible with mainstream tractor heads widely used in Saudi Arabia
• Landing gear: Two‑speed heavy‑load landing‑gear for stable static parking
• Cargo floor: Wear‑resistant composite board with multiple lashing points for cargo fixation
• Overall dimensions: Custom length‑width‑height to realize 110 cubic‑meter inner space

3. Correct Usage Guidelines

1. Pre‑trip routine inspection
   Park the semi‑trailer on flat ground before departure. Inspect curtain rollers, ratchet buckles, air pipelines, tires and wheel‑nut tightness. Confirm no air leakage or curtain damage before connecting with the tractor truck.
2. Standard loading‑unloading operations
   (1) Unlock curtain buckles from front to rear, loosen ratchets, slide curtains aside and remove vertical posts to open the whole side for forklift loading.
   (2) Distribute cargo evenly inside the compartment. Never concentrate heavy goods above one single axle to avoid overloading. Secure products with tension straps on built‑in lashing points.
   (3) After loading finishes, reinstall vertical posts, tighten curtains and lock all buckles firmly to block desert sand during transit.
3. Safe driving rules
   Do not exceed the maximum 80‑ton loading limit. Reduce speed on rough desert roads and avoid high‑speed sharp turns to prevent roll‑over risks. When parking outdoors for long hours across Saudi, keep curtains fully tightened to shield cargo from harsh sunshine and wind‑blown sand.
4. Separation from tractor head
   Stop on level ground, activate trailer parking brake, disconnect air hoses and electric wires, fully lower landing‑gear then unlock the fifth‑wheel before pulling away the tractor unit.

4. Professional Maintenance Advice for Saudi Hot‑Dry Climate

Weekly Maintenance

1. Rinse PVC curtains with clean warm water to remove accumulated sand and dust; wipe oil stains timely without strong corrosive cleaners, otherwise high‑temperature environment will accelerate curtain ageing.
2. Apply silicone‑based lubricant on sliding rails and movable‑pillar parts; stay away from heavy grease which easily gathers desert dust.
3. Check curtain stitching, buckles and tensioners, repair loose seams and replace broken components promptly.

Maintenance every 2000 Kilometers

1. Fill high‑temperature‑resistant grease for king‑pin and landing‑gear gears against rust in dry‑hot surroundings of Saudi Arabia.
2. Check axle hubs for oil leakage, inspect brake chambers and air‑lines for air‑leaks and tighten loose joints.
3. Monitor tire wear and adjust tire pressure properly for high‑temperature pavement to prevent tyre blow‑outs.

Quarterly Deep‑Check‑Up

1. Inspect frame welds and paint condition, repaint rust‑affected areas to stop corrosion under desert climate.
2. Examine leaf springs or air‑bags of suspension and fasten all suspension‑system bolts.
3. Inspect whole braking components and replace ageing rubber parts for safe long‑distance transportation.

Maintenance for Long‑Time Idle Condition