Editing 4-4-0 (section)

=== Indonesia ===
[[File:Schmalspurige 2 B-Zweizylinder Verbund Naßdampf-Personenzugzuglokomotive der Holländischen Staatsbahnen auf Java gebaut 1900 von Hanomag, Hannover-Linden, Sp=1067mm, Gl=29t, Gd=32t.jpg|thumb|Java [[Staatsspoorwegen]]'s narrow gauge 3 ft 6 in (1,067 mm) 2-B two-cylinder compound saturated steam from [[Hanomag]]]]
The 4-4-0 two [[Compound locomotive|cylinder compound]] tender locomotives began to set its step on [[Java]] in 1900s. The ''[[Staatsspoorwegen]]'' (SS) ordered 44 of these from 3 different manufacturers, they were from [[Hanomag]], [[Sächsische Maschinenfabrik|Sächsische Maschinenfabrik (Hartmann)]] and [[Werkspoor]] and they were imported in 1900–1910. 
[[File:Preparing (18859888609).jpg|thumb|B51 12 is preparing for steam]]
After they had already arrived in Java, they were classified as SS Class 600 with 1,503 mm driving wheels which way much bigger than any operational SS locomotives at the time and used as the main workhorse for express trains. The SS 600s could be found hauling local trains in [[Tanah Abang railway station|Tanah Abang–]][[Rangkasbitung railway station|Rangkasbitung–]][[Merak railway station|Merak]]/Labuan, [[Madiun railway station|Madiun]]–[[Kertosono railway station|Kertosono]][[Madiun railway station|–]][[Blitar railway station|Blitar]] and Babat–[[Jombang railway station|Jombang]] lines. Some of them were also found in Maos–[[Kroya railway station|Kroya–]][[Kutoarjo]] and [[Surabaya Kota railway station|Surabaya]]–[[Pasuruan railway station|Pasuruan]] lines. Then, the SS sent their five SS 600s to [[South Sumatra]] due to the increasing needs of railway transport in there. These locomotives were withdrawn from active service momentarily in 1929-1934 during [[Great Depression|great depression]] because of their cylinder compound technology which has a complicated mechanism system so the SS had to save its budget by preserving these locomotives, but they received extensive maintenance so they still could be used normally.

During [[Japanese occupation of the Dutch East Indies|Japanese occupation]] in 1942, all of private/state railway companies of the Dutch East Indies (now [[Indonesia]]) were renumbered based on [[Japan Railways locomotive numbering and classification|Japanese numberings]], without exception to SS Class 600s were renumbered to B51 and it still used after [[Indonesian Independence]] with their ''Djawatan Kereta Api'' (DKA) or Department of Railways of the Republic of Indonesia up to now. One unit of B51 was sent out again to [[West Sumatra]] to serve coal train transport in Muaro–[[Pekanbaru]] line till it closed in September, 1945. From 44 locomotives, only B51 12 (ex-SS 612) of [[Hanomag]] is preserved. Previously, B51 12 was a yard shunter of [[Bojonegoro railway station]].<ref>{{Cite web |last=Plumb |first=Geoff |title=Java 1973 |url=https://plumbloco.smugmug.com/Trains/Java-1973/i-dZtVwVV/A |website=SmugMug}}</ref> The B51 12 was once a static display for more than 30 years at [[Ambarawa Railway Museum]], before finally fully restored in 2012 to haul the Ambarawa [[excursion train]] for Ambarawa–Tuntang line beside the [[Maschinenfabrik Esslingen|Esslingen]] {{whyte|0-4-2|T}} B25 02 and 03 which were used on [[rack railway|rack line]] between Jambu–Bedono.