高密度聚乙烯預(yù)制直埋保溫管合適保送在-50℃—150℃范圍內(nèi)的各種介質(zhì)的保溫保冷工程。它普遍應(yīng)用于城市集中供熱、暖室、冷庫、煤礦、石油港口、化工等行業(yè)的保溫保冷工程。但是，高密度聚乙烯比玻璃鋼的耐氣候性差，耐熱性低。高密度聚乙烯耐熱為60℃—70℃，而玻璃鋼的耐熱為100—120攝氏度，因而，在應(yīng)用中應(yīng)惹起注重！
High density polyethylene (HDPE) prefabricated directly buried insulating pipes are suitable for insulating and cooling projects of various mediums in the range of - 50 ~150 C. It is widely used in urban central heating, heating room, cold storage, coal mine, petroleum port, chemical industry and other industries of thermal insulation and cooling engineering. However, the weather resistance and heat resistance of HDPE are lower than that of FRP. High density polyethylene (HDPE) has a heat resistance of 60 - 70 degrees, while glass fiber reinforced plastics (FRP) has a heat resistance of 100 - 120 degrees. Therefore, attention should be paid to its application.
聚氨酯保溫管黑夾克貯存
Black Jacket Storage with Polyurethane Insulation Pipe
1、.黑夾克聚乙烯外護管易老化，如露天寄存宜用篷布等物遮蓋，堆放處應(yīng)遠離高熱源和火源，制成保溫管后，制止暴曬、驟冷，否則聚乙烯管易開裂，影響產(chǎn)品性能和運用壽命。
1. Black jacket polyethylene exterior guard pipe is easy to aging, such as open storage should be covered with tarpaulin and other things, the stacking place should be far away from high heat source and fire source, after making insulating pipe, prevent sunshine and sudden cooling, otherwise polyethylene pipe is easy to crack, affecting product performance and service life.
2、運輸和穿管過程中，應(yīng)防止野蠻裝卸，掛鉤過細、過硬、用力過猛，否則易形成聚乙烯管摔壞、劃傷或撕裂。
2. In the process of transportation and pipeline piercing, we should prevent rough handling, too thin, too hard and too hard hooks, otherwise, polyethylene pipes may be easily broken, scratched or torn.
3、管材壁厚可調(diào)整，壁厚、顏色可按用戶請求消費，因管材壁厚不同，保溫層厚度為約數(shù)，應(yīng)按實踐厚度計算。
3. Pipe wall thickness can be adjusted, wall thickness and color can be consumed according to user's request. Because of the difference of pipe wall thickness, the thickness of insulation layer is about a number, which should be calculated according to the practical thickness.
4、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。
4. The supporting brackets, plastic plugs, flanges at both ends, welding rods, welding torches, thermal shrinkage bands, etc. are complete.
E.表中的允許偏向是按CJ/114-2000行業(yè)規(guī)范制定的。
E. The allowable bias in the table is formulated in accordance with CJ/114-2000 industry specifications.
計算公式為：外徑≤400mm時，上下偏向之和=0.1×公稱壁厚+0.2
The calculating formula is as follows: when the outer diameter is less than 400 mm, the sum of the upper and lower deviations is equal to 0.1 x nominal wall thickness + 0.2
外徑≥400mm時，上下偏向之和=0.15×公稱壁厚+0.2
When the outer diameter is greater than 400 mm, the sum of the upper and lower deviations is equal to 0.15 x nominal wall thickness + 0.2.
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