Specification and qualification of welding procedures for metallic materials. Welding procedure test. Arc and gas welding of steels and arc welding of nickel and nickel alloys— 36 стр.
Hot rolled products of structural steels. Technical delivery conditions for normalized/normalized rolled weldable fine grain structural steels— 28 стр.
Refrigerating systems and heat pumps. Safety and environmental requirements. Basic requirements, definitions, classification and selection criteria— 68 стр.
Refrigerating systems and heat pumps. Safety and environmental requirements. Basic requirements, definitions, classification and selection criteria— 68 стр.
Refrigerating systems and heat pumps. Safety and environmental requirements. Basic requirements, definitions, classification and selection criteria— 68 стр.
Safety requirements for electrical equipment for measurement, control and laboratory use. Particular requirements for climatic and environmental testing and other temperature conditioning equipment— 90 стр.
Safety requirements for electrical equipment for measurement, control, and laboratory use. Particular requirements for refrigerating equipment— 50 стр.
BS EN IEC 61010-2-011. Safety requirements for electrical equipment for measurement, control, and laboratory use. Part 2-011. Particular requirements for refrigerating equipment— 50 стр.
Refrigerating systems and heat pumps. Safety and environmental requirements. Basic requirements, definitions, classification and selection criteria— 68 стр.