Ключевые слова:
Gas pipelines, Sampling methods, Coatings, Design, Marking, Flanged fittings, Tensile strength, Cast-iron pipelines, Pipe couplings, Bend testing, Size, Elongation, Dimensions, Pipe connections, Pipes, Hardness, Leak tests, Mechanical testing, Spheroidal-graphite cast-iron, Gas pipes, Conformity, Tensile testing, Dimensional tolerances, Cast-iron, Finishes, Pipe coatings, Flanges, Pipe fittings