Gaskets for gas supply - Part 6: Gasket materials based on synthetic fibres, graphite or polytetrafluoroethylen (PTFE) for gas valves, gas appliances and gas mains— 6 стр.
Ground thread taps for ISO metric threads of tolerances 7G, 8G and special tolerances, coarse and fine pitches - Part 4: Manufacturing tolerances on the threaded portion— 6 стр.