管件分类
根据管件的生产方式分:注射管件、焊接管件。根据施工方法与用途分类:电热熔管件、热熔对接管件、承插管件、钢塑转换接头。可交联PE维一适用于大型容器,范围从500-gal运输各种化学品储罐到20,000-gal农用储箱。根据工程习惯分:套筒、弯头、三通、鞍型三通、变径、端堵、法兰、钢塑转换。根据PE管从压力等级来分主要分为0.6MPa,0.8MPa,1.0MPa,1.25MPa,1.6MPa,MPa是压力单位,比如0.6MPa也就是压力6公斤的意思。根据PE管的口径来分大体可以分为:20,25,32,40,50,63,75,90,110,125,160,180,200,225,250,280,315,355,400,450,500,560,630,710,800,900,1000,1200,单位都是mm也就是毫米,PE管口径都是指外径,对应压力等级的不同,管材的壁厚也就各不相同。[1] PE规格
SDR11系列燃气管材d203SDR17.6系列燃气管材d202.3(承压1.0MPa)d253(承压0.6MPa)d252.3d323d322.3d403.7d402.4d504.6d503d635.8d633.8d 756.8d 754.26d 908.2d 905.4d11010d1106.6d16014.6d1609.5d20018.2d20011.9d25022.7d25014.8d31528.6d31518.7d40036.4d40023.7d45040.9d45025.6d50045.4d50028.4d56050.9d56031.9d63057.3d63035.8
PE管热熔对接准备工作:
对接管段均应材质一致,应尽采用同一厂配套材料;对接管段外径、壁厚应一致;待焊管材和骨件的内外表面.尤其是端口附近应光滑平整.无异状;管材的尺寸偏差等应满足要求;对接竹段均应具有与焊机匹配的良好的加工与焊接性能;检查焊接系统及电陈匹配情况,清理加热板.将焊机各部件的电源接通.并且应有接地保护;按焊机给出的焊接工艺参数设置加热板沮度至焊接沮度;若是自动焊机.还应设置吸热时间与冷却时间等参数。抗静电添加剂用于许多包装品级以减少瓶子或包装物对灰尘和污物的粘附。
管道材料
仓库存有PE100的管材,直径710mm×42mm,SDR17,品蓝色,每根长22m。在试验压力下,10分钟压力下降不大于0.02MPa,可以认为严密性试验合格,试压质量优良。为了减少刮擦和划痕,采用HDD方法穿越Kustenkanal运河的工段,选择了SDR11的PE100管材,该管材因附加了特别“硬”的壳而被称为SLM管。
管道连接
工程以对接焊方法为主,仅在特殊情况下采用电热熔承插连接。热熔焊接翻边高度对水力特性几乎没有影响。
焊接参数见表10.4。d、加热完毕,加热工具应迅速脱离待连接件,并应用刮切除干管连接部位,形成均匀。规范标准执行标准:GB/T13663-2000壁厚:mm 价格:元/米公称压力0.4MPa0.6MPa0.8MPa1.0MPa1.25MPa标准尺寸比SDR33SDR21SDR17SDR13.6SDR11公称外径壁 厚价 格壁 厚价 格壁 厚价 格壁 厚价 格壁 厚价 格202.33.22252.34.042.34.13322.35.282.45.503.06.72402.36.722.36.723.08.583.710.37502.38.482.910.563.713.254.616.20632.310.792.511.703.616.534.721.245.825.44752.916.173.616.174.524.485.630.006.835.76902.818.884.328.565.435.526.743.208.251.601103.428.025.343.206.652.808.163.8410.077.041253.936.526.055.447.467.449.282.0811.499.841404.345.366.769.368.384.4810.3102.9612.7124.561604.959.047.790.489.5110.4011.8134.6414.6163.441805.574.408.6113.5210.7139.9213.3171.1216.4209.762006.293.129.6141.1211.9172.3214.7210.0018.2258.962256.9116.6410.8178.8013.4218.8816.6271.4420.5328.562507.7144.2411.9218.4014.8268.5618.4334.0822.7404.162808.6180.2413.4276.0016.6318.2420.6419.5225.4506.163159.7228.9615.0347.2818.7435.3623.2531.1228.6641.7635510.9290.1616.9449.0421.1553.6826.1673.6832.2814.0840012.3368.6419.1572.4023.7700.8029.4854.4036.31033.6845013.8452.8821.5724.3226.7888.7233.11083.6040.91310.6450015.3558.9623.9894.9629.71098.2436.81341.1245.41616.8856017.2698.1626.71120.8033.21375.2041.21678.0850.82026.8063019.3884.4030.01415.7637.41742.1646.32121.8457.22568.00
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