In 1903, the CGR placed six Type B 4-6-0 locomotives with eight-wheeled bogie tenders in service on the Avontuur narrow gauge line in the Langkloof.
They were built by W. G. Bagnall and had bar frames, copper fireboxes and Stephenson valve gear.
In 1912, they came into SAR stock and, in 1914, a further three locomotives with slightly longer boilers were acquired by the SAR.
One of these was also built by Bagnall while the other two were built by Kerr, Stuart and Company.
These three were commonly referred to as the Improved B. When a system of grouping narrow gauge locomotives into classes was eventually introduced somewhere between 1928 and 1930, they were to be classified as Class NG8 but had already been withdrawn from service.

During 1915 and 1916, the SAR placed six locomotives in service in the Langkloof, built by Baldwin Locomotive Works.
They were very similar to the Bagnall built Type B, except that they were equipped with Walschaerts valve gear.
They were later designated Class NG9.
Three of them survived in SAR service until April 1951, when they were sold to the Caminhos de Ferro de Moçâmedes (CFM) of Angola. (
Also see Angola - Narrow gauge)
In 1903, the CGR placed six Type B 4-6-0 locomotives with eight-wheeled bogie tenders in service on the Avontuur narrow gauge line in the Langkloof. They were built by W. G. Bagnall and had bar frames, copper fireboxes and Stephenson valve gear. In 1912, they came into SAR stock and, in 1914, a further three locomotives with slightly longer boilers were acquired by the SAR. One of these was also built by Bagnall while the other two were built by Kerr, Stuart and Company. These three were commonly referred to as the Improved B. When a system of grouping narrow gauge locomotives into classes was eventually introduced somewhere between 1928 and 1930, they were to be classified as Class NG8 but had already been withdrawn from service.
During 1915 and 1916, the SAR placed six locomotives in service in the Langkloof, built by Baldwin Locomotive Works. They were very similar to the Bagnall built Type B, except that they were equipped with Walschaerts valve gear. They were later designated Class NG9. Three of them survived in SAR service until April 1951, when they were sold to the Caminhos de Ferro de Moçâmedes (CFM) of Angola. (Also see Angola - Narrow gauge)
4-6-0