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浏览:41次 | 提问时间: 07-03 03:55
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3个答案
放纵不羁的青春 07-03 03:55

你好,采暖管道采用低压流体输送钢管(即不镀锌焊接钢管或称为黑铁管),工称直径≤32mm的管道,宜采用螺纹连接并选用不镀锌螺纹管件;工称直径>32mm的管道,宜采用焊接连接。所有管道接口均不得置于墙体或楼板内。希望可以帮助到你~

雨後 07-03 04:04

一、工程概况:
1.1 工程名称:首钢京唐钢铁厂一期焦化工程A焦炉本体区管道安装工程 。
1.2 工程地点:唐山市曹妃甸工业区首钢京唐钢铁厂。
1.3 管道主要施工内容为:A焦炉本体加热煤气管道、冷凝液排水管道、除炭空气管道、沿炉顶集气管布置煤气管道。管道的最大壁厚为10mm,最大直径为1820mm 。其中焦炉煤气主管道为DN900×10全长120.81米,高炉煤气主管道为DN1800×10全长122.41米;
二、编制依据
2.1 施工图纸
2.2 现行的国家、行业标准、规范:
2.2.1 GB50235-97《工业金属管道工程施工及验收规范》
2.2.2 GB50236-98《现场设备、工业管道焊接工程施工及验收规范》
2.2.3 《管道设备及平台扶梯涂漆技术规定》JNBJ-02-04-95
2.2.4 《工业企业煤气安全规程》GB6222-86
2.2.5 《工业设备及管道绝热工程施工及验收规范》GBJ126-89
三、施工准备
3.1 技术文件准备:
3.1.1 图纸会审、施工方案编制及焊接工艺评定;
3.1.2 根据管道单线图编制焊口图。确定现场安装活口及预制管段号。
3.1.3 根据管道单线图、平面图、流程图进行技术交底,编制施工计划。
3.2管道技术人员根据编制好的焊口图和相关文件将图中需进行加工的管件(如:弯管、压制三通等)列出详细的清单并提交给专业的加工厂家开始管件的加工。
3.3在现场搭设钢平台20×10m一座,以便管道的组对与连接。
3.4 施工材料准备:与甲方划分好各自的供货范围,由甲方提供的材料,向甲方申请领用,运至施工现场;由施工单位提供的(包括消耗材料),提出物资申请计划,及时采购到位。
3.5 施工人员准备:根据现场施工条件,合理组织管道安装人员(人力计划详见附表) 。
3.6 施工机具准备:根据现场施工条件,合理组织管道安装的施工机具。

万人中央我孤独的漂亮 07-03 04:12

1、采暖管道采用低压流体输送钢管(即不镀锌焊接钢管或称为黑铁管),工称直径≤32mm的管道,宜采用螺纹连接并选用不镀锌螺纹管件;工称直径>32mm的管道,宜采用焊接连接。所有管道接口均不得置于墙体或楼板内。
  2、管道穿越基础、墙和楼板应配合土建预留孔洞(如果是在原有建筑上改造加入采暖系统,要按照相关规范钻孔)。安装时,管道外壁于墙面的净距也要遵循相关的规范。
  3、管道和散热器的设备安装前,必须认真清除内部污物,安装中断后完毕后,管道敞口处应当封闭,防止进入杂物堵塞管道。
  4、安装过程中,多种管道交叉时遵循如下原则小管让大管、压力管让重力管、冷水管让热水管、低压管让高压管、气体管让水管、阀件少的管让阀件多的管、金属管让非金属管、一般管让通风管。
  5、管道安装要在允许的偏差范围内。
  6、管道穿过内墙时应加铁皮套管,其两端应与墙面平齐。管道穿越楼板时应加装钢套管,其底面应与楼板平齐,顶端高出楼层地面20mm(卫生间内应高出30mm)。套管内径比管道外径大10mm。中间均匀填塞石棉或油麻,套管应卡牢塞紧。

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