<p>高压管道安装同中、低压管道安装的要求大同小异,不过要求更高,规定更严,因此,除需符合中、低压管道安装要求外,尚应按下面要求执行。 用来安装的高压管段、管件、紧固件和阀门必须经检验合格,并附有相应的技术证明文件,运到现场后应妥善保管、标志明显、放置整齐。安装前,应将其内、外表面擦拭干净,同时检查其内通道有否异物,是否畅通。检查管口密封面和密封垫的粗糙度是否符合要求,在密封面上不得有影响密封性能的划痕(特别是径向划痕)、斑点等缺陷存在,除规定脱脂的管道外,在管口密封面和密封垫上涂以机油或黄油或白凡士林保护。经检查合格的高压管管端螺纹部分,除规定脱脂的管道外,应涂以二硫化钼润滑脂或石墨机油的调合剂保护。 管道安装时,应使用正式的管架固定,与高压管子、管件接触的管架上,应按设计要求安装保护套管。安装高压法兰时应露出管端螺纹的倒角。安装密封垫时,不要用金属丝吊放,事先应在管口及垫上涂以黄油,软金属高压垫片应准确地放入密封座内。法兰螺栓应对称均匀地拧紧,不得过度,螺栓拧紧之后,两法兰应保持平行同心,露在螺母外面的螺纹应为2~3扣,至少不应少于2扣,并使各个螺栓的外露长度基本一致。在安装过程中,不得用强拉、强推、强扭或修改密封垫厚度等办法来弥补制造或安装误差。管道安装工作如不可能连续进行和完成,应及时封闭敞开的管口。管道上的仪表取样部位的零件应与管道同时安装。</p>
<p>城市 品名 规格 材质 钢厂/产地 价格 涨跌 备注 <br />
佛山 螺旋管 1820-2020*16-18 Q235B 佛山 4520 - 无货;理计 <br />
佛山 螺旋管 219-529*6-8 Q235B 佛山 4050 - 理计 <br />
佛山 螺旋管 920-1020*9-10 Q235B 佛山 4130 - 理计 <br />
佛山 螺旋管 920-1220*13-14 Q235B 佛山 4320 - 理计 </p>
<p>公司将凭借良好的信誉,雄厚的实力,优质的产品,低廉的价格服务于广大用户.谨向对公司一贯给予关怀、支持和帮助的新老朋友和广大客户表示衷心的感谢!并真诚希望与之建立长期的合作关系,互惠互利,共求发展……</p>
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产品材质: 1Cr17Ni7(301)、0Cr18Ni9(304)、304L(00Cr19Ni10),1Cr18Ni9Ti(321)、316(0Cr17Ni12Mo2)、316L(00Cr17Ni14Mo2)、309S(0Cr23Ni13)、310S(0Cr25Ni20)、317,317L,347,347H 0Cr13、1Cr13、2Cr13、3Cr13不锈钢。</p>
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