Ключевые слова: aged, blue, bolted, closeup, complex, control, corrosion, craftsmanship, detail, distribution, energy, engineering, equipment, factory, fittings, flange, flow, gas, heavy, industrial, infrastructure, installation, machinery, maintenance, manual, manufacturing, mechanical, metal, operation, oxidized, pipeline, pipeline system, pipes, plant, pressure, red, resource management, retro, rust, steel, supply chain, system, technology, texture, transportation, utility, valves, vintage, water, weathered,