You're looking for a paper related to JIS E 1101, which is a Japanese Industrial Standard (JIS) for railway rolling stock - general requirements.
: Full digital copies can be found on platforms like Scribd or purchased directly from the Japanese Standards Association . Core Technical Specifications
is the primary standard governing the manufacturing of hot-rolled steel rails in Japan. It specifies everything from the chemical composition of the steel to the physical dimensions and mechanical properties of the rail profiles. Kuangshan Crane
Each profile specifies: head height, web thickness, flange width, radius of head corner, and moment of inertia.
It could specify requirements for components such as rails, wheels, axles, or electrical components, focusing on performance, safety, and interchangeability.