资源描述：
《污水输送管各种管材比选》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。
1、8.4污水输送管各种管材比选8.4ComparisonandSelectionofVariousTypesofSewageDeliveryTubing8.4.1排水工程管材8.4.1TubingforDrainageWorks目前国内用于排水管道工程的管材有许多种，特别是近几年来随着新技术和新材料的发展，又出现了许多新管材，它们各有特点，各善胜场，运用在排水行业，均有不俗的业绩。Incurrentdomesticmarket,varioustypesoftubingfordrainageworksareavailable,e
2、speciallywiththedevelopmentofnewtechnologyandnewmaterialsinrecentyears,manykindsofnewtubingaredeveloped,whichhavedifferentfeaturesandadvantagesandareappliedtodrainageindustrywithgoodperformance.用于排水管道工程的管材主要有：Themajortubingappliedtodrainagepipelineengineeringisasfo
3、llows:²金属管材（主要指钢管、球墨铸铁管、灰口铸铁管等）；²Metaltubing(mainlyrefertosteeltubes,spheroidalgraphiteirontubes,graycastirontubesetc.);²普通的钢筋混凝土管材（主要指一级、二级离心钢筋混凝土管）；²Commonreinforcedconcretetubing(mainlyrefertoGradeIandGradeIIcentrifugalreinforcedconcretetubes);²加强的钢筋混凝土管材（主要指三级离
4、心钢筋混凝土管、预应力钢筋混凝管、预应力钢筒混凝土管（简称PCCP管））；²Enhancedreinforcedconcretetubing(mainlyrefertoGradeIIIcentrifugalconcretetubes,prestressedreinforcedconcretetubes,prestressedsteelcylinderconcretetubes(PCCPtubesforshort));²玻璃钢夹砂管材（主要指缠绕式玻璃钢夹砂管和离心式玻璃钢夹砂管等）；²Glassreinforcedsandi
5、nclusiontubing(mainlyrefertospiralwoundtypeglassreinforcedsandinclusiontubesandcentrifugalglassreinforcedsandinclusiontubesetc.)²合成材料管材（主要指UPVC、UPVC加强筋管、HDPE管、FRPP等）等。²Compositematerialtubing(mainlyrefertoUPVC,UPVCreinforcedtubes,HDPEtubesandFRPPtubesetc.)8.4.2各种管材
6、的比较8.4.2ComparisonofVariousTubing1．金属管材（主要指钢管、球墨铸铁管、灰口铸铁管等）1．MetalTubing(mainlyrefertosteeltubes,spheroidalgraphiteirontubes,graycastirontubesetc.)（1）钢管(1)Steeltubes机械强度大，可承受很高的压力，管件制作、加工方便，适用于地形复杂地段或穿越障碍等情况。但突出的问题是管道的腐蚀及其防护。内外防腐的施工质量直接和管道的使用寿命有关，且钢管的综合造价较高。尽管如此，在一
7、些特殊条件下仍是其它管材所不能替代的。Steeltubehasgreatmechanicalstrengthandiscapableofbearinghighpressure,andthefabricationandprocessingoftubingisconvenient,hencethesteeltubeisapplicabletotheareawithcomplexlandformorwithobstacles.However,theoutstandingissueisconcerninganti-corrosion
8、andprotectionofthetubes.Constructionqualityofinternalandexternalanti-corrosionisdirectlyrelatedtoservicelifeofthetubes,andthecomprehensivecostoft
