廊坊市大城供熱管道工程有限公司多年來一貫堅持“質量*、客戶*”的人性化經營理念，產品已順利通過ISO9001-2000質量體系認證，并被全國城鎮供熱協會吸收為會員單位。本公司生產的預制聚氨酯直埋保溫管、纏繞型玻璃鋼聚氨酯直埋管、預制高溫復合聚氨酯直埋管、鋼套鋼直埋管、聚乙烯夾克管、預制直埋保溫管、聚氨酯保溫管、鋼套鋼保溫管、直埋保溫管、鋼套鋼蒸汽保溫管等產品均已獲得國家質量檢測機關的認可，可獨立承接大型保溫工程的設計施工、*以來，本公司產品廣泛應用于全國各地的工礦企業、石化企業、城市集中供熱管網、住宅小區等領域，均得到用戶高度評價。
聚乙烯外套管*采用高密度聚乙烯材料制成，具有*的機械強度和優良的耐腐蝕性能，可以保護管材在運輸、安裝及使用過程中避免因外界因素而造成的破壞。
制造外套管應添加抗氧劑、紫外線穩定劑和碳黑等。
生產工藝
1、上料 2、擠出 3、模具 4、冷卻 5、牽引 6、內表面電暈處理 7、切割 8、檢驗 9、成品
高密度聚乙烯外護管性能指標
| 項目 | 測試方法 | 指標 |
| 拉伸屈服強度 | GB/T8004.2 | ≥19MPa |
| 斷裂伸長率 | GB/T8004.2 | ≥350% |
| 密度 | GB/T1033 | ≥940Kg/m |
| 熔體流動速率 | GB/T3682 | 0.5g/10min |
| 縱向回縮率 | GB/T6671.2 | ≤3% |
| *機械性能 | GB/T6111 | >1500h |
| 熱穩定性 | GB/T7391 | >20min |
| 碳黑含量 | GB/T3021 | 2.5±0.5% |
| 電暈效果 | DY試劑 | ≥50DYn/cm |
高密度聚乙烯外護管規格表
| 外徑mm | 標 準 型 | 薄壁型 | 對應鋼管外徑mm | 對應保溫層厚度mm | 對應套袖mm | ||||
| 壁厚mm | 重量Kg | 允許偏差mm | 壁厚mm | 重量Kg | 允許偏差mm | ||||
| 92 | 2.5 | 0.675 | ±0.23 | 2.0 | 0.543 | ±0.2 | 27 34 | 30 27 | 110 |
| 100 | 2.5 | 0.735 | ±0.23 | 2.0 | 0.591 | ±0.2 | 34 | 31 | 110 |
| 110 | 2.5 | 0.811 | ±0.23 | 2.0 | 0.651 | ±0.2 | 48 | 29 | 121 |
| 121 | 2.5 | 0.893 | ±0.23 | 2.0 | 0.718 | ±0.2 | 57 | 30 | 125 |
| 125 | 2.5 | 0.924 | ±0.23 | 2.0 | 0.742 | ±0.2 | 57 60 | 31 30 | 133 |
| 133 | 2.5 | 0.984 | ±0.23 | 2.0 | 0.790 | ±0.2 | 57 60 | 36 34 | 142 |
| 142 | 3 | 1.258 | ±0.25 | 2.0 | 0.844 | ±0.2 | 76 | 31 | 155 |
| 150 | 3 | 1.330 | ±0.25 | 2.0 | 0.893 | ±0.2 | 76 | 35 | 165 |
| 155 | 3 | 1.375 | ±0.25 | 2.0 | 0.923 | ±0.2 | 89 | 31 | 165 |
| 161 | 3 | 1.430 | ±0.25 | 2.0 | 0.959 | ±0.2 | 89 | 34 | 175 |
| 165 | 3 | 1.466 | ±0.25 | 2.0 | 0.983 | ±0.2 | 89 | 36 | 175 |
| 171 | 3 | 1.520 | ±0.25 | 2.0 | 1.019 | ±0.2 | 89 | 39 | 180 |
| 175 | 3 | 1.556 | ±0.25 | 2.0 | 1.044 | ±0.2 | 108 | 31 | 180 |
| 180 | 3 | 1.601 | ±0.25 | 2.0 | 1.074 | ±0.2 | 108 114 | 33 31 | 188 |
| 188 | 3 | 1.674 | ±0.25 | 2.0 | 1.122 | ±0.2 | 114 | 35 | 200 |
| 194 | 3 | 1.728 | ±0.25 | 2.0 | 1.158 | ±0.2 | 108 | 41 | 200 |
| 200 | 3.2 | 1.899 | ±0.26 | 2.2 | 1.312 | ±0.21 | 133 | 31 | 211 |
| 208 | 3.2 | 1.977 | ±0.26 | 2.2 | 1.365 | ±0.21 | 133 | 35 | 219 |
| 211 | 3.2 | 2.005 | ±0.26 | 2.2 | 1.385 | ±0.21 | 133 | 31 | 219 |
| 219 | 3.2 | 2.083 | ±0.26 | 2.2 | 1.438 | ±0.21 | 133 | 40.8 | 225 |
| 225 | 3.5 | 2.338 | ±0.28 | 2.5 | 1.678 | ±0.23 | 140 159 | 40 30 | 238 |
| 230 | 3.5 | 2.391 | ±0.28 | 2.5 | 1.715 | ±0.23 | 165 | 30 | 238 |
| 238 | 3.5 | 2.475 | ±0.28 | 2.5 | 1.776 | ±0.23 | 159 | 37 | 245 |
| 245 | 3.5 | 2.549 | ±0.28 | 2.5 | 1.828 | ±0.23 | 159 | 39 | 265 |
| 250 | 3.9 | 2.894 | ±0.30 | 2.5 | 1.866 | ±0.23 | 159 | 43 | 265 |
| 265 | 3.9 | 3.071 | ±0.30 | 2.5 | 1.979 | ±0.23 | 165 | 47 | 285 |
| 280 | 4.4 | 3.657 | ±0.32 | 3.0 | 2.506 | ±0.25 | 165 | 53 | 290 |
| 285 | 4.4 | 3.724 | ±0.32 | 3.0 | 2.551 | ±0.25 | 219 | 30 | 290 |
| 290 | 4.4 | 3.790 | ±0.32 | 3.0 | 2.597 | ±0.25 | 219 | 32 | 302 |
| 300 | 4.4 | 3.923 | ±0.32 | 3.0 | 2.687 | ±0.25 | 219 | 37 | 310 |
| 305 | 4.4 | 3.989 | ±0.32 | 3.0 | 2.732 | ±0.25 | 219 | 40 | 310 |
| 310 | 4.4 | 4.055 | ±0.32 | 3.0 | 2.778 | ±0.25 | 219 | 42 | 327 |
| 315 | 4.9 | 4.583 | ±0.35 | 3.5 | 3.288 | ±0.27 | 219 | 44 | 327 |
| 325 | 4.9 | 4.730 | ±0.35 | 3.5 | 3.394 | ±0.27 | 219 | 49.5 | 335 |
| 327 | 4.9 | 4.760 | ±0.35 | 3.5 | 3.415 | ±0.27 | 219 | 50 | 345 |
| 335 | 4.9 | 4.878 | ±0.35 | 3.5 | 3.499 | ±0.27 | 219 | 54 | 345 |
| 345 | 4.9 | 5.026 | ±0.35 | 3.5 | 3.605 | ±0.27 | 273 | 32 | 365 |
| 355 | 4.9 | 5.174 | ±0.35 | 3.5 | 3.710 | ±0.27 | 273 | 37 | 365 |
| 361 | 5.6 | 6.002 | ±0.38 | 4.0 | 4.307 | ±0.3 | 273 | 40 | 385 |
| 365 | 5.6 | 6.070 | ±0.38 | 4.0 | 4.355 | ±0.3 | 273 | 42 | 385 |
| 381 | 5.6 | 6.340 | ±0.38 | 4.0 | 4.548 | ±0.3 | 273 | 40 | 440 |
| 385 | 5.6 | 6.408 | ±0.38 | 4.0 | 1.596 | ±0.3 | 273 | 52 | 440 |
| 400 | 6.3 | 7.480 | ±0.57 | 5.0 | 5.956 | ±0.47 | 325 | 32 | 417 |
| 407 | 6.3 | 7.613 | ±0.57 | 5.0 | 6.062 | ±0.47 | 325 | 35 | 420 |
| 417 | 6.3 | 7.803 | ±0.57 | 5.0 | 6.213 | ±0.47 | 325 | 41 | 439 |
| 420 | 7.0 | 8.719 | ±0.63 | 5.0 | 6.258 | ±0.47 | 325 | 42 | 439 |
| 433 | 7.0 | 8.994 | ±0.63 | 5.0 | 6.454 | ±0.47 | 325 | 49 | 450 |
| 439 | 7.0 | 9.120 | ±0.63 | 5.0 | 6.544 | ±0.47 | 325 | 52 | 450 |
| 450 | 7.0 | 9.352 | ±0.63 | 5.0 | 6.710 | ±0.47 | 377 | 31 | 464 |
| 464 | 7.0 | 9.648 | ±0.63 | 5.0 | 6.922 | ±0.47 | 377 | 31 | 470 |
| 470 | 7.0 | 9.775 | ±0.63 | 5.0 | 7.012 | ±0.47 | 377 | 41 | 500 |
| 475 | 7.0 | 9.880 | ±0.63 | 5.0 | 7.087 | ±0.47 | 377 | 44 | 500 |
| 485 | 7.0 | 10.091 | ±0.63 | 5.0 | 7.238 | ±0.47 | 377 | 40 | 500 |
| 490 | 7.0 | 10.197 | ±0.63 | 5.0 | 7.314 | ±0.47 | 377 | 51 | 500 |
| 500 | 7.8 | 11.579 | ±0.69 | 6.0 | 7.939 | ±0.55 | 377 | 55 | 520 |
| 520 | 7.8 | 12.049 | ±0.69 | 6.0 | 9.301 | ±0.55 | 426 | 41 | 525 |
| 525 | 7.8 | 12.166 | ±0.69 | 6.0 | 9.392 | ±0.55 | 426 | 43 | 535 |
| 530 | 7.8 | 12.284 | ±0.69 | 6.0 | 9.482 | ±0.55 | 426 | 46 | 550 |
| 535 | 7.8 | 12.402 | ±0.69 | 6.0 | 9.572 | ±0.55 | 426 | 48 | 550 |
| 550 | 8.8 | 14.363 | ±0.76 | 6.5 | 10.655 | ±0.58 | 426 | 55 | 568 |
| 568 | 8.8 | 14.841 | ±0.76 | 6.5 | 11.077 | ±0.58 | 478 | 40 | 600 |
| 580 | 8.8 | 15.195 | ±0.76 | 6.5 | 11.243 | ±0.58 | 478 | 44 | 600 |
| 590 | 8.8 | 15.425 | ±0.76 | 6.5 | 11.439 | ±0.58 | 478 | 50 | 630 |
| 600 | 8.8 | 15.690 | ±0.76 | 6.5 | 11.635 | ±0.58 | 478 | 54 | 655 |
| 622 | 8.8 | 16.274 | ±0.76 | 6.5 | 12.066 | ±0.58 | 478 | 65.5 | 655 |
| 630 | 9.8 | 18.331 | ±0.84 | 8.0 | 15.077 | ±0.70 | 529 | 42 | 655 |
| 641 | 9.8 | 18.656 | ±0.84 | 8.0 | 15.273 | ±0.70 | 529 | 48 | 655 |
| 655 | 9.8 | 19.069 | ±0.84 | 8.0 | 15.610 | ±0.70 | 529 | 55 | 685 |
| 685 | 9.8 | 19.965 | ±0.84 | 8.0 | 16.334 | ±0.70 | 529 | 70 | 710 |
| 700 | 9.8 | 20.695 | ±0.84 | 8.0 | 16.937 | ±0.70 | 529 | 80 | 733 |
| 733 | 11.1 | 24.167 | ±0.93 | 8.0 | 17.492 | ±0.70 | 630 | 43 | 760 |
| 740 | 11.1 | 24.401 | ±0.93 | 8.0 | 17.661 | ±0.70 | 630 | 47 | 760 |
| 746 | 11.1 | 24.602 | ±0.93 | 8.0 | 17.806 | ±0.70 | 630 | 50 | 760 |
| 750 | 11.1 | 24.736 | ±0.93 | 8.0 | 17.903 | ±0.70 | 630 | 52 | 777 |
| 760 | 11.1 | 25.071 | ±0.93 | 8.0 | 18.144 | ±0.70 | 630 | 57 | 777 |
| 777 | 11.1 | 25.640 | ±0.93 | 8.0 | 18.554 | ±0.70 | 630 | 65.5 | 795 |
| 795 | 11.1 | 26.212 | ±0.93 | 8.0 | 18.988 | ±0.70 | 630 | 74 | 830 |
| 830 | 11.1 | 27.414 | ±0.93 | 8.0 | 19.833 | ±0.70 | 720 | 47 | 850 |
| 850 | 12 | 30.328 | ±1.0 | 9.0 | 22.828 | ±0.77 | 720 | 56 | 885 |
| 885 | 12 | 31.595 | ±1.0 | 9.0 | 23.77 | ±0.77 | 720 | 73 | - |
| 911 | 12 | 33.730 | ±1.0 | 9.0 | 25.379 | ±0.77 | 820 | 53 | 988 |
| 988 | 12 | 35.232 | ±1.0 | 9.0 | 26.573 | ±0.77 | 820 | 75 | 1054 |
| 1044 | 14 | 43.490 | ±1.15 | 10 | 31.185 | ±0.85 | 920 | 48 | - |
| 1054 | 14 | 43.912 | ±1.15 | 10 | 31.486 | ±0.85 | 920 | 57 | 1095 |
| 1095 | 14 | 45.643 | ±1.15 | 10 | 32.732 | ±0.85 | 920 | 77 | - |
| 1155 | 14 | 48.477 | ±1.15 | 10 | 34.532 | ±0.85 | 1020 | 57 | 1210 |
| 1192 | 14 | 49.739 | ±1.15 | 10 | 35.648 | ±0.85 | 1020 | 72 | - |
| 1210 | 14 | 50.499 | ±1.15 | 10 | 36.191 | ±0.85 | 1020 | 95 | - |
| 1380 | 14 | 57.677 | ±1.15 | 10 | 41.318 | ±0.85 | 1220 | 70 | 1430 |
說 明 A.聚乙烯管易老化，如露天存放宜用篷布等物遮蓋，堆放處應遠離高熱源和火源，制成保溫管后，禁止暴曬、驟冷，否則聚乙烯管易開裂，影響產品性能和使用壽命。
B.運輸和穿管過程中，應避免野蠻裝卸，掛鉤過細、過硬、用力過猛，否則易造成聚乙烯管摔壞、劃傷或撕裂。
C.管材壁厚可調整，壁厚、顏色可按用戶要求生產，因管材壁厚不同，保溫層厚度為約數，應按實際厚度計算。
D.與管材配套的支架、塑料塞、兩頭法蘭盤，焊條、焊槍、熱縮帶等齊全。
E.表中的允許偏差是按CJ/114-2000行業標準制定的。
計算公式為：外徑≤400mm時，上下偏差之和=0.1×公稱壁厚+0.2
外徑≥400mm時，上下偏差之和=0.15×公稱壁厚+0.2
環保在線