GOST 27989-88

Metal forming machines. Shear. Rows of main parameters

Transport structures. Ball valve digital model for ships and fixed offshore platforms. Technical requirements for the design and virtual testing

State system for ensuring the uniformity of measurements. State verification schedule for instruments measuring surface flatness parameters of optical surfaces up to 200 mm

Reciprocating internal combustion engines. Safety requirements for design and construction of engines for use in potentially explosive atmospheres. Part 1. Group II engines for use in flammable gas and vapour atmospheres

Protection against electric shock. Common aspects for installation and equipment

Acoustics. Attenuation of sound during propagation outdoors. Part 1. Calculation of the absorption of sound by the atmosphere