A Durchgangsgüterzug is a category of German train that describes a goods train that runs directly to its destination with the same train formation. No shunting takes place at intermediate stations and it is usually a unit train

Unit train

A unit train, also called a block train, is a railway train in which all the cars making it up are shipped from the same origin to the same destination, without being split up or stored en route...

. As well as transporting freight between marshalling yards these trains are used to move bulk goods in large quantities on set routes, e.g. coal

Coal

Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure...

 and ore

Ore

An ore is a type of rock that contains minerals with important elements including metals. The ores are extracted through mining; these are then refined to extract the valuable element....

 from ports to power stations and steelworks.

Trains with only one type of freight are usually called unit train

Unit train

A unit train, also called a block train, is a railway train in which all the cars making it up are shipped from the same origin to the same destination, without being split up or stored en route...

s.