Stud ends and ports of fittings, valves and plug screws - Part 21: Dimensions for pipe thread according to DIN EN ISO 228-1 and O-ring sealing— 13 стр.
Control technology - Protective tubes and extention tubes for liquid-in-glass thermometers, dial thermometers, thermocouples and resistance thermometers - General review; assignment protective tube/thermometer— 12 стр.