Brake triangles are very important parts of the braking system of railway vehicles that can significantly affect safety and security on the railway. In accordance with the international standard UIC 833, the requirements for manufacturers of brake triangles are very strict and require the supplier to provide proof of the quality of the brake triangles. Therefore, manufacturers must provide appropriate evidence of the quality of production of brake triangles in accordance with the above-mentioned international standard. The paper presents the basic requirements of the international standard UIC 833 and the development of the test stand for static testing of brake triangles of railway vehicles in the Serbian company Tehnoliv Komerc from Velika Plana. This allowed this company to start a very successful mass production of brake triangles for the international market.