Qingdao Energy Group's "Number One Project," with an investment exceeding 800 million yuan, renovating 146.6 kilometers of aging pipelines (30 kilometers for gas). The project adopts a medium-low pressure mode, with pipe diameters ranging from DN20 to DN200, and non-destructive testing of welds.
Externally coated welded steel pipes, 3PE anti-corrosion spiral steel pipes, and PE pipes. The coating uses a flame-retardant epoxy resin coating process, and the pipelines comply with GB/T 3091, CJ/T 120, and GB/T 9711 standards.
No.1 Haodeboer Road, Qingdao, Shandong, China
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