Internal combustion engines. Piston rings - Quality requirements has-corrigendum The method described is intended

The method described is intended to determine the activity of commercial formulations or active substances under the conditions in which they are used in accordance with BS EN 13697:2001

• Generalities

This European Standard contains the relevant functional requirements for gas pressure regulating installations forming a part of the service lines in gas supply systems

and oil and gas recovery

Internal combustion engines. Piston rings - Quality requirements has-corrigendum The method described is intended1 Scope This document specifies quality aspects that can be defined but that are not normally found on a drawing specification. It covers the following: singlepiece piston rings of grey cast iron or steel; multipiece piston rings (oil control rings) consisting of cast iron parts and spring components; and singlepiece and multipiece oil control rings of steel, i. e. oil control rings in the form of strip steel components or steel segments (rails) with