钢丝网骨架聚乙烯复合管也称:钢丝网管、钢丝网骨架塑料复合管、钢骨架增强塑料复合管、钢骨架管、钢骨架塑料复合管、PSP管、SRTP管、STSCP管、SPE管。
钢丝网骨架聚乙烯复合管分三层结构,即芯管、钢丝层、外PE层。其中芯管和钢丝缠绕层是用于承受管材内压,外PE层主要是用于焊接连接。芯管和外PE层均采用PE80/PE100级原料进行热熔挤出成型,钢丝缠绕层采用HDPE改性材料与左右正反缠绕钢丝组成,该改性HDPE与HDPE在加热条件下能熔融为一体。同时,其极性键与钢有极强的粘接性能(200N/25mm,ASTMD903)。这种高性能粘合剂是国际上著名大公司(杜邦)的新产品,已在国内西气东输工程中作为钢----HDPE界面物质广泛运用。
由于采用了优质的材质和先进的生产工艺,使之具有更高的耐压性能,同时,该复合管具有优良的柔性,更适用于长距离埋地用供水、输气管道系统。
给水、特种流体用管材钢丝条数
公称外径dn | 用途符号 | 公称压力/MPa |
0.4 | 0.6 | 0.8 | 1.0 | 1.25 | 1.6 | 2.0 | 2.5 | 3.5 |
断面钢丝数/条 不小于 |
50 | L、T | | | | | | 14 | 18 | 18 | 24 |
63 | L、T | | | | | | 24 | 28 | 30 | 36 |
75 | L、T | | | | | | 24 | 30 | 30 | 36 |
90 | L、T | | | | | | 60 | 64 | 64 | 72 |
110 | L、T | | | | | 30 | 30 | 30 | 40 | 62 |
140 | L、T | | | | | 30 | 30 | 30 | 40 | 62 |
160 | L、T | | | | | 40 | 50 | 72 | 82 | 102 |
200 | L、T | | | | | 62 | 86 | 112 | 112 | 144 |
225 | L、T | | | | | 72 | 90 | 108 | 112 | |
250 | L、T | | | | 82 | 90 | 124 | 132 | 144 | |
315 | L、T | | | | 82 | 96 | 135 | 144 | | |
355 | L、T | | | | 86 | 102 | 144 | | | |
400 | L、T | | | | 136 | 180 | 180 | | | |
450 | L、T | | | | 148 | 196 | 272 | | | |
500 | L、T | | | | 164 | 180 | 272 | | | |
560 | L、T | | | 240 | 304 | | | | | |
630 | L、T | | | 280 | 336 | | | | | |
给水、特种流体用管材公称外径、公称压力、公称壁厚及极限偏差
公称外径(dn)/mm | 公称压力/MPa |
0.8 | 1.0 | 1.25 | 1.6 | 2.0 | 2.5 | 3.5 |
基本尺寸 | 极限偏差 | 公称壁厚en及极限偏差/mm |
50 | +1.2 | | | | 4.5+1.2 | 5.0+1.2 | 5.5+1.5 | 5.5+1.5 |
63 | +1.2 | | | | 4.5+1.2 | 5.0+1.2 | 5.5+1.5 | 5.5+1.5 |
75 | +1.2 | | | | 5.0+1.2 | 5.0+1.2 | 5.5+1.5 | 6.0+1.5 |
90 | +1.4 | | | | 5.5+1.5 | 5.5+1.5 | 5.5+1.5 | 6.0+1.5 |
110 | +1.5 | | 5.5+1.5 | 5.5+1.5 | 7.0+1.5 | 7.0+1.5 | 7.5+1.5 | 8.5+1.5 |
140 | +1.7 | | 5.5+1.5 | 5.5+1.5 | 8.0+1.5 | 8.5+1.5 | 9.0+1.5 | 9.5+1.5 |
160 | +2.0 | | 6.0+1.5 | 6.0+1.5 | 9.0+1.5 | 9.5+1.5 | 10.0+2.0 | 10.5+2.0 |
200 | +2.3 | | 6.0+1.5 | 6.0+1.5 | 9.5+1.5 | 10.5+2.0 | 11.0+2.0 | 12.5+2.2 |
225 | +2.5 | | 8.0+1.5 | 8.0+1.5 | 10.0+2.0 | 10.5+2.0 | 11.0+2.0 | |
250 | +2.5 | 8.0+1.5 | 10.5+2.0 | 10.5+2.0 | 12.0+2.2 | 12.0+2.2 | 12.5+2.2 | |
315 | +2.7 | 9.5+1.5 | 11.5+2.0 | 11.5+2.0 | 13.0+2.5 | 13.0+2.5 | | |
355 | +2.8 | 10.0+1.8 | 12.0+2.2 | 12.0+2.2 | 14.0+2.5 | | | |
400 | +3.0 | 10.5+2.0 | 12.5+2.2 | 12.5+2.2 | 15.0+2.8 | | | |
450 | +3.2 | 11.5+2.0 | 13.5+2.5 | 13.5+2.5 | 16.0+2.8 | | | |
500 | +3.2 | 12.5+2.2 | 15.5+2.8 | 15.5+2.8 | 18.0+3.0 | | | |
560 | +3.2 | 17.0+3.0 | 20.0+3.0 | | | | | |
630 | +3.2 | 20.0+3.0 | 23.0+3.0 | | | | | |