outdoors metal hot water pipeline steel pipe |
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navigate by keyword : bridge central construction crossing distribution district duct energy engineering equipment factory fuel gas heat heater heating hot industrial industry insulation line main mains metal modern oil outdoor pipe pipeline piping plant power production station steam steel structure supply system technology transition tube valve warm water |
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St. Petersburg, Russia - July 9, 2015: Outdoor the main pipeline of hot water and heating of residential buildings in an urban area, bridge crossing. |
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