This part of GB/T 35451 specifies the terms,definitions,symbols and abbreviations,material,product classification and designation,pipe construction and jointing methods,requirements,test methods,inspection regulation,marking,transportation and storage of polypropylene(PP)double wall corrugated pipes(hereinafter referred to as pipes)for underground drainage and sewerage.
This part is applicable to polypropylene double-wall corrugated pipes for non-pressure underground drainage and sewerage with a long-term working temperature up to 45 ℃.
By taking into account of the chemical and thermal resistance of the material,it can also be used in non-pressure systems for industrial underground drainage and sewage.
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