球墨铸铁管施工规范

球墨铸铁管施工规范 目 录 第一章、土方 工程 路基工程安全技术交底工程项目施工成本控制工程量增项单年度零星工程技术标正投影法基本原理 一、管沟开挖 二、管基加固 第二章、管道安装 一、安装程序 二、T型管安装要求 三、K型机械接口安装要求 第三章、管沟回填 第四章、附属构筑物 一、管件、固定台 二、阀门井室 第五章、试压验收 第六章、注意事项 to correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will implement "on the in-depth development of the grassroots, the people to worry, notification on the normalization of promoting harmony activities, making the double work innovation system, the demands of the masses reflect back channels, help enterprises to solve practical problems as much as possible. 3, visit 编制说明: 球墨铸铁管从国际到国内现已广泛应用于城镇供水及燃气行业，是用户比较能认可的一种成熟产品，现从制造、标准、设计、使用等均已形成系列标准，为了提高球墨铸铁管管道工程的施工水平，保证工程质量，完成设计意图，满足管线使用要求，本文特将球墨铸铁管施工要求作一规定说明，供同行参考，不足之处请指教。 2s as much as possible. 3, visitrobleming the double work innovation system, the demands of the masses reflect back channels, help enterprises to solve practical pth development of the grassroots, the people to worry, notification on the normalization of promoting harmony activities, makdep-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 第一章、土方工程 一、开挖管沟 1)挖掘管沟时，应根据现场土质情况、地下水情况、管道断面尺寸、管道埋深等施工条件，正确的选择沟槽断面形式，为施工创造良好的作业条件。原则在保证工程质量和施工安全的前提下，尽量减少土方的开挖量，降低施工费用，加快施工进度; 2)在施工区域内，有碍施工的已有建筑物和构筑物(道路、沟渠、其它管路、电杆、树木等)，开挖前建设单位与有关单位进行协商; 3)开挖前按设计管线的走向放中心线，打标记木桩; 4)挖掘时，应考虑留用部分好的原土以备管沟回填使用，根据作业面堆放原土场地，注意堆土坡度，高度，保证施工安全，在管子的接口处，管沟应宽一些，以方便接口的连接施工; 5)挖掘时，防备下雨时雨水流入管沟，活地下渗水现象，应当准备必要的排水设备; 6)挖掘管沟尺寸(不用钢板支撑时)一般坡度取0.33，见 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 一 土质良好地方T型管沟 A :砂垫层高度 3lect back channels, help enterprises to solve practical problems as much as possible. 3, visiton the normalization of promoting harmony activities, making the double work innovation system, the demands of the masses ref depth development of the grassroots, the people to worry, notification-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 第 3 页 共 23 页 注:(1)埋深度北方地区应大于下二表深度，应在当地冻土层以 下; (2)快速道、重载车辆较多的埋深管子地方，按设计管道内压 及外压的1.5-2倍安全系数考虑深度，但绝对不能小于1米埋 深度; (3)h’为砂垫层厚度; 表一(T型管数据) 口径 A(mm) B(mm) H(mm) h’ (mm) 80 760 500 1200 200 100 800 550 1200 200 150 850 580 1200 200 200 880 600 1200 200 250 890 600 1200 200 300 900 600 1200 200 350 1010 700 1200 200 400 1150 800 1200 200 450 1300 900 1200 200 500 1470 1100 1200 200 600 1730 1300 1200 200 700 1800 1350 1200 200 800 1850 1380 1200 200 1000 1928 1450 1200 200 1200 2000 1500 1300 200 1400 2060 1550 1400 200 土质良好地方机械接口管沟: 4s as much as possible. 3, visitrobleming the double work innovation system, the demands of the masses reflect back channels, help enterprises to solve practical pth development of the grassroots, the people to worry, notification on the normalization of promoting harmony activities, makdep-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 挖掘斜度:1:0.1 (受地质而变动) (3) L:管轴方向 接头部分挖掘长度 表二:机械接口管沟数据 直管(CM) 接头(CM) 口径(MM) K型 T型 K型 A B h H A’ B’ C L 1600 210 272 150 310 260 320 50 100 1800 230 293 150 330 280 340 50 100 2000 250 320 150 350 300 370 50 100 2200 270 342 150 370 320 390 50 100 2400 290 368 150 390 340 420 50 100 2600 310 392 150 410 410 440 50 100 松土或其它不稳定土层大于2米深采用撑板支撑，开始支撑的开挖管沟深度不得超过1.0m，挖深与支撑交替进行，每次交替的深度为0.4—0.8m; 5lect back channels, help enterprises to solve practical problems as much as possible. 3, visiton the normalization of promoting harmony activities, making the double work innovation system, the demands of the masses ref depth development of the grassroots, the people to worry, notification-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 第 5 页 共 23 页 :管轴方向 接头部分挖掘长度表三:地质不佳处管沟数据 直管(CM) 接头(CM) 口径(MM) K型 T型 K型 A E h H C L 1000 200 55 120 220 1200 220 55 130 250 1400 240 55 140 280 1600 270 55 150 315 50 100 1800 290 55 150 335 50 100 2000 310 55 150 356 50 100 2200 330 55 150 378 50 100 2400 350 55 150 396 50 100 2600 370 55 150 416 50 100 管沟开挖质量应符合下列规定: 1)地基处理要符合设计要求; 2)沟壁平整，边坡坡度符合施工设计的规定; 3)沟槽底高度的偏差，开挖土方时应为20mm，开挖石方时应为6s as much as possible. 3, visitrobleming the double work innovation system, the demands of the masses reflect back channels, help enterprises to solve practical pth development of the grassroots, the people to worry, notification on the normalization of promoting harmony activities, makdep-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 30—200mm，用机械挖沟时，槽底应预留50-100mm左右的厚土层暂不开挖，改为人工清理沟底至标高; 4)沟槽挖深较大时，应合理确定分层开挖的深度，人工开挖超过3米时应分层开挖，每层深度不宜超过2米; 5)管沟的直立壁和边坡，在开挖过程中和敞露期间应防止塌陷，应根据施工现场的具体情况进行支撑的选择，确保施工安全; 6)每一个作业组开挖沟槽修平至标高，最长不应多与2公里，以免塌陷变形。 二、管基土加固 1)管道地基应同时满足容许沉降量和容许垂直承载力的要求，如不满足时，应按设计要求采取措施，如某管基段岩土勘测不明，设计未考虑到，开挖后现场发现淤泥质及松质粘土，应及时通知施工监理，地基采用换土垫层法或打地基桩等方法解决; 2)一般情况下不设特别基础，为减少管子产生的应力，施工现场有时把管子的支撑面挖成圆形，使管子安装时管体尽量与原来地基紧密接触; 3)采用砂夹石灰土基础; 4)过路口采用混凝土承台式基础; 第二章、管道安装 一、安装程序; 本规定按照中华人民共和国GB50268-97给排水施工及验收规范6-5-1铸铁管道安装基础上编制的。 7lect back channels, help enterprises to solve practical problems as much as possible. 3, visiton the normalization of promoting harmony activities, making the double work innovation system, the demands of the masses ref depth development of the grassroots, the people to worry, notification-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 第 7 页 共 23 页 K型管上压按管沟上已排放管清理承插兰、胶圈、支验沟槽 实际长度挖工作坑 口工作面撑环 杂物 K型紧 螺栓 验收 试压 回填 装配 T型300涂油插口与 以上用胶圈接触面 导链安 装 二、T型管安装要点: 1400mm以下T型球管安装要点: 1、用钢丝刷、25mm油灰平铲、毛刷、抹布清理T型承口工作面槽内杂物，检查另一支管插口倒角情况，插口和胶圈要保持干净; 安装示意图: 型管清理承口 的工作面 2、将胶圈装入承口凹槽(DN600以上胶圈捏成梅花形容易安装)(见下图); 3、给胶圈内表面和插口接触面涂以润滑油(见下图); 8s as much as possible. 3, visitrobleming the double work innovation system, the demands of the masses reflect back channels, help enterprises to solve practical pth development of the grassroots, the people to worry, notification on the normalization of promoting harmony activities, makdep-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 胶圈捏成梅花型容易装入 润滑油涂处 胶圈 承口底部不能粘油 承口 4、插口端涂油位置(见下图); 从倒角处开始涂为正确涂油法 5、第一支管下沟槽按设计承口方向应朝水流方向，对正中心线定位，后每支管<400管下管人工抬入沟底，>400管用设备提升吊人沟底，与前一支管装配应找水平，DN150以下管用绳索叉杆将插口推入承口，>200以上管用钢丝绳和导链拉入承口(注意装配内外涂绝缘与环氧陶瓷管，绳索应套胶管，包括钩头、导链用橡胶保护，以免外壁碰伤)(见下图); 9lect back channels, help enterprises to solve practical problems as much as possible. 3, visiton the normalization of promoting harmony activities, making the double work innovation system, the demands of the masses ref depth development of the grassroots, the people to worry, notification-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 第 9 页 共 23 页 叉杆DN80--DN150装配法绳索 DN200--DN600装配法 一个吨--3吨导链钩头绳索 DN700--DN1200装配法两个吨--8吨导链 DN1400--DN2000装配法三个6吨--8吨导链 6、检查装配接头胶圈位置，利用一把薄窄钢尺，绕着插口90? 四点检查胶圈压缩比(见下图); 薄窄尺 三、K型机械接口管安装要点: 10s as much as possible. 3, visitrobleming the double work innovation system, the demands of the masses reflect back channels, help enterprises to solve practical pth development of the grassroots, the people to worry, notification on the normalization of promoting harmony activities, makdep-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 1、机械式接头的组装。 机械式接头的组装较容易，但假如没有正确的接合则易发生不可预知的不良影响，所以依照以下步骤进行工地组装是绝对必要的。 在直管的承口端及插口端需挖工作坑以提供额外的空间作为栓紧螺丝用。 根据标准方法，接头处管沟要如图所示，示范口径DN2000mm; 清理插口外侧面。 从直管插口算起240cm处，必须将砂子、油脂和其它杂质清除干净，并按要求涂上规定的油漆标记，安装胶圈处涂以润滑油(见下图); 11lect back channels, help enterprises to solve practical problems as much as possible. 3, visiton the normalization of promoting harmony activities, making the double work innovation system, the demands of the masses ref depth development of the grassroots, the people to worry, notification-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 第 11 页 共 23 页 清理承口与压兰: 必须将砂子、油脂和其它杂物清除掉(见下图); 将压兰装配在插口上; 确认压兰朝正确方向(如图示) 清理胶圈; 必须将砂子和其它杂物清理干净，并涂以润滑油; 将胶圈装在插口上; 确认胶圈在正确方向(如图示) 12s as much as possible. 3, visitrobleming the double work innovation system, the demands of the masses reflect back channels, help enterprises to solve practical pth development of the grassroots, the people to worry, notification on the normalization of promoting harmony activities, makdep-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 将直管的承口与另一直管的插口连接起来; 插口外部及承口内部之间的距离必须整个圆周均相等，而插口必须完全插入，以使任何一点都没有偏离; 将胶圈推挤入承口与插口间的空隙; 注意不可伤了胶圈; 如果推入有困难，可用铁锤等工具轻轻敲打(见下图); 请勿以斧子或其它有尖角的工具敲打或推进胶圈; 对准压兰中心点，并使承口与压兰的螺栓对齐，螺栓方向一致; 先穿入上下两端的螺栓，然后再处理左右两端的螺栓(见下图); 13lect back channels, help enterprises to solve practical problems as much as possible. 3, visiton the normalization of promoting harmony activities, making the double work innovation system, the demands of the masses ref depth development of the grassroots, the people to worry, notification-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 第 13 页 共 23 页 轻轻地锁紧螺栓，把剩余的螺栓放入螺栓孔中再逐一锁紧(见下图); 检查所有螺栓及螺母的松紧(见下图); 14s as much as possible. 3, visitrobleming the double work innovation system, the demands of the masses reflect back channels, help enterprises to solve practical pth development of the grassroots, the people to worry, notification on the normalization of promoting harmony activities, makdep-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 机械接头的螺栓、螺母的扭矩数; 尺寸 扭矩 直管口径 把手长度 M16 6 75 15 M20 10 100-600 25 M24 14 700-800 35 M30 20 900-2600 45 正确栓紧示范; 螺栓一定要和直管的轴径平行，压兰与管轴也必须成一正确角度，螺母也需与压兰表面平行(见下图); 错误示范; (1)如果螺栓或直管不够干净，或是有小石子之类的异物卡在螺栓和凸缘之间，将引起螺栓倾斜或弯曲，造成错误接合(见下图)。 15lect back channels, help enterprises to solve practical problems as much as possible. 3, visiton the normalization of promoting harmony activities, making the double work innovation system, the demands of the masses ref depth development of the grassroots, the people to worry, notification-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 第 15 页 共 23 页 (2)如果螺栓的T型头自承口的凸缘面突起，表示螺栓没有正确锁好(见下图)。 (3)如果压兰和直管的轴径与另一支管轴不相符合，压兰就会碰到另一支管的凸缘面，会造成压兰倾斜，胶圈无法吻合(见下图)。 (4)如果压兰和直管的螺栓孔没有成一直线，螺栓就会倾斜或弯曲。注意:如果接合不当，需拆开重新组合。 偏向安装: 如果安装时需要任何偏向，需按照下述方式进行: (1)加宽沟渠来容许偏差度。 (2)首先，先以直线方式接合，然后将接合处偏向到需要的角16s as much as possible. 3, visitrobleming the double work innovation system, the demands of the masses reflect back channels, help enterprises to solve practical pth development of the grassroots, the people to worry, notification on the normalization of promoting harmony activities, makdep-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 度，但偏向的角度必须是在下表所述的范围内。 (3)然后按照正确扭矩锁上螺栓和螺母。 偏向容许角度: 每支直管容许的偏向 口径 偏向容许角度 接合间隙 6M直管 8M直管 1600 1?30? 13 43 1800 1?30? 13 14 48 2000 1?30? 13 14 53 2100 1?30? 13 14 55 2200 1?30? 13 14 58 2400 1?30? —— 14 63 2600 1?30? —— 14 70 第三章:管沟回填 1、回填前必须将槽底积水和施工时遗留的杂物清除出来，管道主体经检查合格后，沟槽应及时回填; 2、沟槽回填料，除非特殊指定应使用的回填料，一般不得含有碎石、砖块、垃圾等杂物，应是良质土砂料; 17lect back channels, help enterprises to solve practical problems as much as possible. 3, visiton the normalization of promoting harmony activities, making the double work innovation system, the demands of the masses ref depth development of the grassroots, the people to worry, notification-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 第 17 页 共 23 页 3、回填程序应先填实管底，再同时回填管道两内侧，最后回填至原地平面标高; 4、回填时应分层夯实，管中心线以下每200mm为一层夯实，中心线以上每500mm为一层夯实，超出管顶500mm以上可以用小型机械夯实; 5、用砂子回填应加水用振动棒振实，振实程度应保证管子不上浮为宜; 6、接头处带工作坑，先把工作坑回填实，然后与管身同步; 7、注意回填期间重要的是要做到均匀回填，否则局部沉陷会特别大，必须小心均匀的做好回填工作。 第四章:附属构筑物 一、管件、固定台 1、管线用的弯头、三通、阀门处应按设计使用压力考虑开启瞬间产生的压力水锤，按设计要求设置固定台，其类型尺寸必须按设计图要求; 2、埋地管线管件接点处如因地下构筑物，如其它管道等，没有位置做固定台，应使用防滑脱管件; 3、固定台应在坚固的地基上构筑，其后背土应为原土，两者紧密靠紧; 4、水平固定台与管件应设置沉降缝，缝间浇注水泥前垫一层油毡，以防止管件与支敦发生不均匀沉降; 18s as much as possible. 3, visitrobleming the double work innovation system, the demands of the masses reflect back channels, help enterprises to solve practical pth development of the grassroots, the people to worry, notification on the normalization of promoting harmony activities, makdep-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 5、固定台:所有供水管线上有较多弯头、三通等，一般情况下，有位置设固定台不选用防滑脱管件，有压管线皆受水力作用无法静定，需加设固定台以稳定它，固定台因水压作用力方向的不同、管径 2及弯曲的大小，形状尺寸也不同，举例来说:6Kg/cm水压，应注意 22固定台处其土壤垂直承载力应大于10t/m，水平侧压力应大于5t/m，侧压力小于上值时，应处理基础; 二、阀门井室 1、井室应在敷设好管道，装好阀门之后砌筑，其尺寸必须满足设计要求; 2、阀门底座应垂直固定在水泥基础上; 第五章、试压验收 一、 1、试压区段长度，对有压管线，除有特殊规定外，试压段长度不应大于1000m。 2、强度试验压力，承受内压的埋地铸铁管的试验压力。当设计压力小于或等于0.5MPa时，应为设计压力的2倍;当设计压力大于0.5MPa时，应为设计压力加0.5MPa。 3、严密性试验，在保压时间段内，如压力有所下降，可采用加压泵加水的办法，然后在试验时间段未测量为保持在试验压力所注入的水量(精确到?50,)，对有压管线水损失量应不大于0.001升/小时?公里管线?每毫米公称直径?每0.1MPa试验压力，即相当于19lect back channels, help enterprises to solve practical problems as much as possible. 3, visiton the normalization of promoting harmony activities, making the double work innovation system, the demands of the masses ref depth development of the grassroots, the people to worry, notification-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 第 19 页 共 23 页 每公里DN100的管线在试验压力1Mpa一下，漏水不应大于每小时1升。试验时间不得少于2小时。 二、管道水压试压前应符合下列规定: 1、试压管线均应在全部回填后再试压; 2、若有特殊要求，个别可留出接口不回填，但管身中间要充分回填一定高度，防止管移动; 3、管件固定台(水泥)养护已达到设计强度方可; 4、注水浸泡达24小时以上(带水泥衬内壁); 5、试验管段的所有阀门打开，不允许用闸阀做堵板，应制作两端堵头及靠背千斤顶(按推力吨位配置); 6、管道升压时，管道内的气体应排尽，升压过程中，当发现压力表针摆动较大，不稳，应重新排气后再按10,逐级升压; 7、水压试验时，管道两端严禁站人; 8、试压情况作好 记录 混凝土 养护记录下载土方回填监理旁站记录免费下载集备记录下载集备记录下载集备记录下载 ; 三、管道接口单口试压 1、对大于1.4米以上大口径管，如果施工单位资质力量强，有能力，接口安装完成后，可以先进行单口试压，以保障每一接口安装良好; 2、单口试压压力应高于设计使用压力3kg; 第六章、注意事项 1、管子在运输过程中，由于装卸方法问题，有可能造成管子插20s as much as possible. 3, visitrobleming the double work innovation system, the demands of the masses reflect back channels, help enterprises to solve practical pth development of the grassroots, the people to worry, notification on the normalization of promoting harmony activities, makdep-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 口椭圆，DN400以下管将椭圆部分切掉就可，大于500mm用专用工具重新整园，然后现场进行水泥衬修补，水泥砂浆成份(重量比)如下:2份水泥、3份砂子、2份可引用水、1份添加剂充分搅拌，修补前清理要修补处浮砂及杂物，然后用水将此处周围处浸湿;注意不要积水，修补表面要抹平，塑料布盖着养生; 2、第一支管下沟槽按管中心线定位承口朝水流方向，以后每支管按标高插入前一支管承口，小管观察插口线是否到位，大管通过在管内观察接口间隙，最小间隙应不小于3至5mm，从装第二支管起沿管身轴向方向两侧各挂一个2T—8T拉紧导链，确保接口间隙均匀，同时也能解决遇到设计有坡度时管子往下移位的问题。直线段不允许上下左右带角度安装，如因地势必须偏转角时，DN1400mm以下可转角1.5度,3度，DN1600mm以上球管最大借转角不得超过1.5度; 3、安装的管线不能呈蛇形状态，如果出现要求施工队进行调整，保持管线呈直线状态; 4、胶圈存放阴凉密闭处; 5、管沟砂垫层要平整，不允许有较大的局部凸起，已装好的管要逐支检查管子是否有悬空现象; 6、回填时要检查管子是否移位，包括上下和左右; 7、对回填土的要求:管线中心线以下每200mm升高距离要夯实一次，土壤夯实密度大于90,，管线中心线以上每500mm升高距离要夯实一次，土壤夯实密度大于85,，回填时要专人负责并监督; 8、遇有特殊要求时，可以留出接口部位，而管身中间要充分回21lect back channels, help enterprises to solve practical problems as much as possible. 3, visiton the normalization of promoting harmony activities, making the double work innovation system, the demands of the masses ref depth development of the grassroots, the people to worry, notification-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 第 21 页 共 23 页 填以避免管子漂浮和整体试压过程中管体移动; 9、球铁管没有必要对回填用土进行特别的选定。但是直接与管子接触的部位最好是选用砂子或挖沟槽当中的良质土或砂用于回填，较经济; 10、在土质软弱的情况下，最好用砂子回填到管径中央，也是有良好的效果。特别要注意，不使已安装好的管子产生下沉; 11、地下水要尽量排尽，避免管基被水泡沼，引起的地基软化对南方地区施工极为重要; 12、应当注意使管子的两侧均等的填充土砂，管底也应当被土砂充分包围填充; 13、如果新连接的管道没有充分充水或回填，那么沟中积水可能会使其漂浮。沟中积水可能是地下水或雨水。要防止这种现象发生，采取下列预防措施会有效: (1)在安装完毕后要尽量给管子冲水; (2)在沟中安装排水泵; (3)在安装后尽快回填; 在这些预防措施中(3)可能是最可靠的措施。防止管子漂浮所 需的最小的覆盖土厚度计算值如下表所示: 表:防止管子漂浮所需的最小的覆盖土厚度 公称直径 浮力 最小浮土厚度公称直径(MM) 浮力 最小浮土厚度(MM) (KGF/M) (CM) DN (KFG/M) (CM) DN 80 7.5 - 900 701.4 49 100 10.9 - 1000 862.6 54 150 22.7 - 1100 1042.3 62 22s as much as possible. 3, visitrobleming the double work innovation system, the demands of the masses reflect back channels, help enterprises to solve practical pth development of the grassroots, the people to worry, notification on the normalization of promoting harmony activities, makdep-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 200 38.7 - 1200 1237.0 69 250 59.0 4 1400 1678.7 82 300 83.5 6 1500 1923.6 89 350 112.2 10 1600 2185.2 93 400 144.5 13 1800 2761.2 108 150 181.0 17 2000 3404.5 122 500 222.3 21 2100 3677.9 148 600 316.7 28 2200 4082.8 157 700 427.8 34 2400 4745.2 170 800 556.8 41 2600 5657.9 187 注:上述 表格 关于规范使用各类表格的通知入职表格免费下载关于主播时间做一个表格详细英语字母大小写表格下载简历表格模板下载 数值以下列条件为基础: (1)管子的壁厚:ISO2531标准中的K9级 (2)土壤密度:1.8,1.0,0.8(假定) 23lect back channels, help enterprises to solve practical problems as much as possible. 3, visiton the normalization of promoting harmony activities, making the double work innovation system, the demands of the masses ref depth development of the grassroots, the people to worry, notification-lement "on the into correcting misunderstandings advocate good cadre style. 2, to carry out the "double" of human activities. Bangkun will imp 第 23 页 共 23 页