Numerous industrial narrow-gauge lines were built for peat extraction, clay extraction for brickworks and construction sites. The dominant gauge for industrial lines was 700 mm (2 ft 3+9⁄16 in), contrary to the 600 mm (1 ft 11+5⁄8 in) gauge used in neighbouring countries.
The majority of the Dutch narrow-gauge railways were built as steam tram networks, predominantly with 750 mm (2 ft 5+1⁄2 in) and 1,067 mm (3 ft 6 in) track gauge.[1]
Decauville Spoorweg Museum (Permanently closed in 2014)); 1,2 km 600 mm (1 ft 11+5⁄8 in) and 400 mm (15+3⁄4 in) running line and 350 mm (13+25⁄32 in), 400 mm (15+3⁄4 in), 500 mm (19+3⁄4 in), 550 mm (21+21⁄32 in), 580 mm (22+27⁄32 in), 600 mm (1 ft 11+5⁄8 in), 700 mm (2 ft 3+9⁄16 in), 750 mm (2 ft 5+1⁄2 in), 900 mm (2 ft 11+7⁄16 in), 1,000 mm (3 ft 3+3⁄8 in) metre gauge and 1,200 mm (3 ft 11+1⁄4 in) collection, mainly focused on (Decauville) field railways.[2][3]