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See Chinese contents: CJ/T 225-2011 CJ/T 225-2011: Metal reinforced polyethylene (PE) spirally corrugated pipe for underground sewer
This Standard specifies the terms and definitions, symbols, abbreviations, raw materials, grading and marking, pipe structure and connection methods, requirements, test methods, inspection rules, marking, transportation and storage of the metal reinforced polyethylene (PE) spiral corrugated pipe.
