PNST 424-2020

Transmission tooth gears of the traction main railway stock. Reference scale of macro- and microstructure

Microbiological products. Packing, marking, transportation and storage

Solders for capillary soldering of fittings from copper and copper alloys for connecting the pipelines systems. Grades

Basic and safety principles for man-machine interface, marking and identification. Actuating principles

Inland water transport. Infrastructure objects. Operation of embankments, retaining semi-gravity and gravity walls. Monitoring the technical condition of various semi-gravitational structures. Basic requirements

Pipes for details of bearings. Technical specifications