Tientsin-Pukow 4-6-0 Locomotives in China

Class 104 (Locobase 20334)

Data from "Types of Locomotives -Messrs. Henschel and Sohn", Far Eastern Review, Volume 11 (October 1914), p. 141.

A relatively large Ten-wheeler, this design was quite orthodox. Its grate was supplied with a rocking mechanism because of the "very clinkery quality of coal". The engine's backbone consisted of "two strong and substanially built up plates of 30 mm (1.2") thickness.

Measured from the fire side (typical Continental practice), the tubes' combined heating surface area came to 160.91 sq m (1,743 sq ft) and combined heating surface area of 174.61 sq m (1,880 sq ft).

Class 107 (Locobase 20904)

Data from "Types of Locomotives-Messrs. Henschel and Sohn" Far Eastern Economic Review (October 1914), pp. 141-143. Works numbers were 10583-10596 in 1911.

A batch of small Pacifics putting an average 16,000 kg axle loading from Germany's leading builder. A rocking grate dealt with the "very clinkery quality of the coal to be built."

NB: FER shows the tube heating surface area of 160.9 sq m (1,732 sq ft) calculated from the inside (water side) diameter of 41 mm (1.61") as was common practice in German locomotives; total evaporative heating surface came to 174.7 sq m (1,880 sq ft) . The report also shows the external diameter, which was common in North American and British builders. Locobase uses the latter to simplify comparison.)