ONORM EN 253-2009
ONORM EN 253-2009 标准详情
- 标准号：ONORM EN 253-2009
- 中文标题：
- 英文标题：District Heating Pipes - Preinsulated Bonded Pipe Systems For Directly Buried Hot Water Networks - Pipe Assembly Of Steel Service Pipe, Polyurethane Thermal Insulation And Outer Casing Of Polyethylene
- 标准类别：奥地利国家标准ONORM
- 发布日期：
内容简介
Describes requirements and test methods for straight lengths of prefabricated thermally insulated pipe-in-pipe assemblies for directly buried hot water networks, comprising a steel service pipe from DN 20 to DN 1200, rigid polyurethane foam insulatio
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