T-34 variants
The T-34 medium tank is one of the most-produced and longest-lived tanks of all time. Identification of T-34 variants can be complicated. Turret castings, superficial details, and equipment differed between factories; new features were added in the middle of production runs, or retrofitted to older tanks; damaged tanks were rebuilt, sometimes with the addition of newer-model equipment and even new turrets. Some tanks had appliqué armor made of scrap steel of varying thickness welded onto the hull and turret; these tanks are called "s ekranami" ("with screens"), although this was never an official designation for  any T-34 variant. Model naming. Since the break-up of the Soviet Union, newly declassified sources have demonstrated that all T-34s with the original turret and F-34 gun (conventionally known as Models 1941 and 1942) were officially called "Model 1941", and hexagonal-turret T-34 (Model 1943) was officially called "Model 1942". German intelligence in World War II referred to the two main production models as T-34/76 and T-34/85 with minor models receiving letter designations such as "T-34/76A"—this nomenclature has been widely used in the west, especially in popular literature. Since at least the 1980s, many academic sources (notably AFV expert  Steven Zaloga) have used Soviet-style nomenclature: "T-34" and "T-34-85", with minor models distinguished by year: "T-34 Model 1940". (This page has adopted that convention.) Because many different factories manufactured T-34s, with components built by subcontractors, the listing below merely gives a broad overview and does not capture every possible variant. Also, not every factory implemented all model changes at the same time. For example, factory No. 112 continued building narrow-turret 76 mm armed models long after all other plants had switched to hexagonal-turreted tanks. List of models and variants. People's Republic of China. Tanks. Although  there have been many modifications that have resulted in some visual differences between original T-34-85 and the Chinese T-34-85, and although the Chinese factory 617 had the ability to produce every single part of T-34-85, there was not a single T-34-85 that was actually produced in China. The name "Type 58" is made up by the online game World of Tanks for a hypothetical Chinese-built T-34 variant, and was never seen on any Chinese military documents or the internet before World of Tanks released the vehicle under the name.