劣厚壁管线管表面易产生结疤。d米重:每米重量=0.02466*壁厚*(外径-壁厚)Q承压流体输送用螺旋缝高频焊管线管（SY5038-8是以热轧钢带卷作管坯，经常温螺旋成型，采用高頻搭接焊法焊。接的，用于承压流体输送的螺旋缝高频焊管线管。管线管口径大，输送傚率高，并可节省铺设管线的投资。主要用于铺设输送石油，天然气等的管线。C安全要求应用要点：适用于淬透性较高的合金结构钢，合金工具钢和高速钢；不仅可以作为各种较为重要结构的后热处理，而且还可以作为某些紧密零件，如丝杠等的预先热处理，以减小变形。eP应用要点：保持钢在淬火后的高硬度和耐磨性时用低温回火；在保持定韧度的条件下提高钢的和屈服强度时用中温回火；以保持高的冲击韧度和塑性为主，又有足够的强度时用高温回火；般钢尽量避免在230~280度，不锈钢在400~450度之间回火，因为这时会产生次回火脆性。碳素管又可分为普通碳素管线管和优质碳素结构管。Wh0Cr18Ni9Ti：奥氏体不锈钢碳含量低于0.06%，般采用1050应用领域市场降温福州罗源县40cr406*60无缝钢管下行压力并不大C左右固溶处理（即加-热水冷），提高抗蚀能力。
热轧管般在自动轧管机组上生产。实心管坯经检查并清除表面缺陷，在管坯穿孔端端面上定心，然后送往加热炉加热，在穿孔机上穿孔。在穿孔同时不断鏇转和前进，在轧辊和顶头的作福州罗源县40cr406*60无缝钢管工艺技术用下，管坯内部逐漸形成空腔，称毛管。再送至自动轧管机上继续轧制。后经均整机均整壁厚，经定径机定径，达到规格要求。利用连续式轧管机组生产热轧管线管是较先进的。品质管理g折叠工艺流程圆管坯→加热→穿孔→辊斜轧，连轧或挤压→脱管→定径(或减径)→冷却→矫直→水压试验(或探伤)→标记折叠焊缝余高管线管壁厚不大于5mm时，焊缝余高不大於0mm;管线管壁厚大於5mm时焊缝余高不大於5mm。B适应建筑钢结构，桥梁，造船，机车车辆，机械加工等工业现代化的发展，异型钢管特别是大规格，厚壁方型，矩型钢管需求量日趋攀升。自2000年美国“911”以后，世界各国材料苦心致力于对表面积小，大规格，厚壁，高刚度，度，耐火性强的建筑钢结构型材的开发。普遍关注于对方形和矩形钢管性能和生产工艺技术的研究。伪劣厚壁管线管容易刮伤。j福州罗源县船舶用碳钢管线管(GB5312-200是制造船舶I级耐压管系，Ⅱ级耐压管系，锅炉及过热器用的碳素钢管线管。碳素钢管线管管壁工作温度不超过450℃，合金钢管线管【资讯百科在线助读】试卷2010年普通高等学校招生全国统一考试（天津卷）英语笔试第I卷部分：英语知识运用（共两节，满分45分）从D四个选项中，选出可以填入空白处的佳选项。.take--Excuseme,Iwonderifyoucanhelpme?--?A．..’../...—ProfessorJohoson,I’mafraidIcan’tfinishthereportwithinthisweek.—?’’sOK8.—CanyoubelieveIhadtopay30dollarsforahaircut?—Youshouldtrythebarber’’..Afterdrivingattopspeed,’’’’.,hegotreapidpromotion,.,...,hedoesn’..—Johnwenttothehospitalalone.—Ifhe_______meaboutit,.第二节：完形填空（共20小题；每小题分，福州罗源县40cr406*60无缝钢管满分30分）阅读下面短文，掌握其大意，然后从16～35各题所给的D四个选项中，选出佳选项。Robertmondy,5isanexpiredpoliceofficer,..Oneday,.“,thatwasoneofthe___25_daysofmylife.”Deeplytouchedbytheboy‘swords,moodydecidedtocreateafoundationthat__26___teenagerstothebasisoffishingincampingprograms.“asapoliceman,Isaw_27__therewasviolence,,”,he__29__topresentanalternativewayoflife,”whenyouaresittingtherewaitingfora____30__”hesays,“youcan’thelpbuttalktoeachother,andsuch__31___canbeverydeep.”“talkingaboutdrugshelpedpreparemeforthepeer(同龄人),pressuresinhighschool,”.”AndIwasabletohelpmylittlebrother_32____drugs”Moodyfaces____34________inthreeyears,whenhehopestorunthefoundationfull-time.“I’mlivingahappylifeandIhavearesponsibilitytomy______35__________togiveback,”Moodysays.”.”....第二部分：阅读理解（共20小题：每小题分，满分50分）阅读下列短文，从每题的D四个选项中，选出佳选项。WELCOMEWelcometoWindsorCastle,(住所)oftheQueen,-.VisitorswithchildrenForthosevisitingwithchildren,,’sChapelVisitorsarrivingattheCastleafter15:00frommarchtoOctoberareadvisedtovisitStGeorge’,includingbooks,cards,china,jewellery,andchildren’,VisitorswishingtoleavetheCastleforrefreshmentsinthetownmayobtainre-entrypermitsfromthecastleshops,EatingangdrinkingarenotpermitsintheStateApartmentsorStGeorge’-commercialphotographyandfilmingarewelcomedinthe,videorecordingandfilmingarenotpermittedinsidetheStateApartmentsorStGeorge’’,-’sChapelisspeciallyofferedtovisitorswithkids?-entrypermits?AVisitorswishingtoeatoutsidetheCastleBVisitorsbuyinggiftsinthecastleshopsCVisitorsbuyingwaterfromtheCourtyardDVisitorseatingoutsideStGeorge’?AToensurethesafetyofothersBToensurethesecurityoftheCastleCTopreventthemfromdisturbingothersDTopreventtheuseofthebuilt-incamerasthelastpart,a”workingroyalpalace”?Becausetheyarefun,……planningyournextmove……actingasateammenber……theseareall”,suchasrope-Jumpingandhide-and-,theytranslatelifeintoexcitingdreamsthatteachchildrensomeofThebasicrulertheywillbeexpectedtofollowtherestoftheirlives,suchantalkingturnsandcooperating(合作)Manychildren‘-,somesaudiaeavbianchildrenPlayagamecalledbones,whichsharpensthehand-eyecoordination（协调）,theOlympicGames,,knowingthatagoldmedalisawinforanentirecountry,,.Peopleonallcontinetsplayit—,aCalifomiansoccerplayer,,thinkaboutwhyyouenjoyit,whatskillsareneeded,-and-seek,--lifeexperiencesintoaplaylearninglifeskillsmoreinterestingpeople’sviewsofsportingeventstothepassage,whyiswinningOlympicmedalssoencouraging?inspirespeople’.earnsthewinnersfameandfortune.’?..’’shousestherehasalwaysbeenawoodenstand(木架)withasmallnotepad(记事本)’,fivehouseslater,’tbethesamepencil?Thepadismoremodern,butthewoodenstandisdefinitelytheoriginalone.“I’mjustamazedyoustillhavethesamestandforholdingthepadandpencilafteralltheseyears.”Isaytoher,walkingbackintotheliving-roomwithasheetofpaperandthepencil.“’tyouaffordapen?”Mymotherrepliesalittlesharply.“’,andIwasalwaysinthekitcheninthosedays.”ImmediatelyIcanpictureher,hairwild,bluehousecoatcoveredinflour,awoodenspooninonehand,thepencilintheother,,“OnedayIwascookingandwatchingbabyPauline,andIhadabrilliantthought,.ItturnedouttobearealbreakthroughforsolvingthemathematicalproblemIwasworkingon.”Thisstory—whichhappenedbeforeIwasborn—remindsmehowextraordinarymymotherwas,andis,-,whenmymotherisinthebathroom,,onthebackofthesmallestone,,rootedinthesoilofacheapwoodenbreadboard,invisible(看不到的)’smotheralwayskeptthenotepadandpencilinthekitchen?..’soriginalopinionaboutthewoodenstand?.?.’smind,.?Thesethreepopularmisquotes（戏谑的引语）aremeanttobejokes,,ortomakemistakes,isindeedapartofbeinghuman,butitseemsthatmostpeopledon’.Theoriginalquoteabouthumannaturewentlikethis:“Toerrishuman,toforgive,divine（神圣的）.”Thissayingmirrorsanideal:peopleshouldbeforgivingofothers’,wetendtodotheopposite－,,,butyouleavetheumbrellahomeWhenyouhearaweatherforecastforsensedoesnotseemtobecommonforlargeorganizations,becausetherearesomanythingsgoingonthatonepersoncannotbeinchargeofsaythatinalargecompany,“therighthanddoesnotknowwhatthelefthandisdoing.”Andwhatiswrongwithasocietythatthinksthatmakingupagoodexcuseislikecreatingaworkofart?Oneofcommonproblemswithmakingexcusesisthatpeople,especiallyyoungpeople,gettheideathatit’sokaynottobetotallyhonestalltheisacorollary(直接推论)tothat:ifagoodexcuseis“good”evenifitisn’thonest,thenwhereistheplaceofthetruth?tothepassage,whichofthefollowingseemsthemosthuman?’sidealmakefunofothers’’,whatisasignofaman’smaturity?.?’’sopinionaboutagoodexcuse?.?MirrorofHumanNatureBlameoftoForgiveMarkofMaturityofExcuse2010年普通高等学校招生全国统一考试（天津卷）英语笔试第Ⅱ卷第三部分：写作节：阅读表达（共5小题：每小题2分，满分10分）阅读下面短文，并按照题目要求用英语回答问题。WhenDanShawgetsupfromthesofainhishome,,hedoesn’ttakeCuddlesoutforawalk—CuddlestakeshimforawalkCuddlesisclearlynoordinaryfamilyisatwo-foot-highminiaturehorseandservesastheguidingeyesofShaw,,,ananimalover,saidhecouldn’theartopartwithadog(whichusuallylivesabouteighttotenyears)andgetusedtoanewone,,,theylivefor25-35years,,,ShawandCuddleslearnedtofindtheirwayonbusystreets,stepovecurbs(便道沿儿)andfindelevatorevendemonstrated(显示)itsabilitytostepinfrontofShawandblickhim,.’sthemeaningoftheunderlinedword“miniature”inParagraph1?(Nomorethan2words)didn’tShawwanttochooseadogashisguide?(Nomorethan15words)doesParagraph3mainlytellus?(Nomorethan10words)doesShawfeelabouthisfuturelifewiththehelpofCuddles?(Nomorethan10words)youropinion,whatistheidealrelationshipbetweenmanandanimals?(Nomorethan20words)第二节：书面表达（满分25分）61.假设你是晨光中学的高中生李华。你校拟选拔一些学生，利用暑期到晨曦希望小学为学生辅导英语。你希望参加此活动。请根据以下提示，福州罗源县40cr406*60无缝钢管用英语给校评选组写一封申请信：·对此活动的认识（如对本人，学生及社会的益处等）·个人优势（如性格，独立生活能力，语言能力等）·你的计划（如怎样进行辅导等）注意：1.词数不少于100;2.可适当加入细节，以使内容充实，行文连贯;3.信的开头和结尾已给出，不计入词数。参考词汇：晨曦希望小学ChenxiHopeSchoolDearSirorMadam,IamLiHuafromClassOne,,LiHua参考答案管壁工作温度超过450℃。yO应用要点：多用于低碳钢，低合金结构钢以及工具钢制件，般氮化层深0．02～3mm；氮化后还要淬火和低温回火。常用缩写Bn化肥设备用高压管（GB79-2000）是适用于工作温度为-40~400℃，工作压力为10~30Ma的化工设备和管道的优质碳素结构钢和合金钢管。
