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<P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> pvc管材夏天和冬天施工分别要注意哪些事项?</P> <P style="TEXT-ALIGN: center; WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"><IMG alt=pp风管 src="http://www.hbtrgg.cn/upfiles/proimages/20206308434568238.jpg" _src="http://www.hbtrgg.cn/upfiles/proimages/20206308434568238.jpg"></P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 一、pvc管材夏天要注意哪些事项?</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 1.夏季雨水较多,pvc管材施工完成后应及时回填,防止管沟坍塌影响正常施工,损坏管体,带来不必要的麻烦。此外,回填时应进行压实,防止管沟出现空隙,这将在承压时对管体造成不均匀的应力,影响管道的抗压能力。</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 2. pvc管材试压前,应在管道的起点、终点和高点安装排气阀,试压长度为500米。试压时,应缓慢增加压力,并连续排气。当达到要求的静水压力时,应保持静止1小时,试验水压应为工作压力的1.5倍。</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 3.因为天气比较热,管道比较容易变形,所以夏天存放管道时,管道高度不要超过1.5米,插座要错开。</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 4.长时间暴露在紫外线辐射下,PVC管容易老化。如果短时间不施工,应及时在管体上覆盖遮阳网。</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 5. pvc管材夏季施工时,应特别注意胶粘剂的用量。当温度高时,粘合剂挥发得很快。涂装后应立即堵塞,堵塞后应保持30秒后再移动。在连接pvc管材的过程中,每隔50米应增加一个膨胀节或活套。使用粘合剂后,应及时盖上瓶盖,防止粘合剂因高温挥发,重复使用时会影响粘接效果。</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 6.在夏季活套管施工中,pvc管材具有热胀冷缩的特点,因此活套管连接过程中应有一定的预留间隙(63mm以下约10mm,75mm ~110mm之间约15mm,140mm ~160mm之间约20mm,200mm以上约25mm)。</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 7.夏天有许多小动物。pvc管材安装后,要特别注意管口的覆盖,防止小动物进入管道,影响以后管道试压和正常供水。</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 二、pvc管材冬天施工要注意哪些事项?</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 1.对于无法避免低温运输、装卸、安装、施工的项目,请在pvc管材选择时避免选择低压薄壁管,尽量使用厚壁高压品牌。提高灯具的安全系数。</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 2.沟底整洁平整,不得有石块、砖块等杂物。如有硬物,管道安装前应开挖250px,并填砂压实。</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 3.施工时,pvc管材应平直,不得随意弯曲。如果管道应弯曲,弯曲角度应根据管道(回路)每个承口的允许弯曲角度确定,通常在2以内。</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 4.沟槽开挖应考虑局部冻土的深度。管道应埋在冻土下。管道埋深一般为1.2、1.5或更低。挖沟宽度以管道外径为准,沟底宽度为管道外径加300mm。外露管道应保温,防止管道冻结开裂,施工时不得踩踏管道。</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 5.将pvc管材管座内壁和管外壁插入零件,用干布擦拭干净,然后在两端涂上适量的胶水。当部分溶剂蒸发,胶水加强时,用力插入。你可以用喷灯加热胶水。粘合时,加快固化速度,插入2小时后即可移动。</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial"> 6.拆卸管道前,检查管道材料是否损坏,尤其是承口和承口端部是否损坏。如有损坏,请及时更换。</P> <P style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 5px 0px; FONT-FAMILY: sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 16px; FONT-WEIGHT: 400; WORD-SPACING: 0px; text-decoration-color: initial; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial">下一条:<A title=上海pp管材售后服务热线 href="/NEWS/2726.html" target=_blank>上海pp管材售后服务热线</A></P>
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