Ключевые слова:
Fire-tube boilers, Boilers, Steam boilers, Hot-water boilers, Specification (approval), Materials specification, Steels, Grades (quality), Quality assurance, Pressure equipment, Forgings, Sheet materials, Pipes, Welding electrodes, Filler metal, Acceptance (approval), Performance testing, Technical documents, Marking, Quality assurance systems, Visual inspection (testing), Tensile testing, Bend testing