Willig Other models

The register lists here 19 versions with unladen weights from 3,320 to 8,020 kg, gross weights from 18,000 to 45,500 kg, lengths from 7,150 to 13,400 mm and a width of 2,550 mm.

Tank semi-trailers of this weight class carry fuels, chemicals, foodstuffs or other liquid and gaseous goods on the road; depending on the cargo they are fitted with chamber partitions, insulation or heating coils, and are subject to ADR regulations and regular technical inspection of the tank for dangerous goods.

On used units, the condition of the tank shell against corrosion and leaks counts, the manhole cover, fittings and discharge valves, the ADR inspection plate and its deadlines, axles and brake system, and the frame and connection to the tractor unit; on heated or insulated versions also the condition of the heating coils and the insulation beneath the outer skin. Parts for fittings and valves usually run through specialist tank-vehicle suppliers.