作為埋地石油、天然氣管道不可缺少的警示產(chǎn)品，警示膠帶在應(yīng)用中多年未曾更換。正是由于其優(yōu)良的產(chǎn)品特性，警示膠帶采用PE（聚乙烯）顆粒制成，所以其防腐性能好，能保證埋地30-50年不腐爛，將繼續(xù)起到警示作用。那么決定警示膠帶質(zhì)量的關(guān)鍵因素有哪些？下面來(lái)簡(jiǎn)單解釋一下吧。

As an indispensable safety warning product for buried oil and gas pipelines, warning tapes have not been replaced for many years. Because of its excellent product characteristics, the warning tape is made of PE (polyethylene) particles, so its anti-corrosion performance is good, which can ensure that it will not rot for 30-50 years, and will continue to play a warning role. So what are the key factors that determine the quality of warning tape? Let's explain briefly.

現(xiàn)在地下管道越來(lái)越多，交縱越來(lái)也越多，一些老舊的管道依然在運(yùn)行并沒(méi)有被廢棄，但如果沒(méi)有一款好的警示帶用來(lái)當(dāng)作保護(hù)，而是選用了低檔的材料產(chǎn)品，那么在管道沒(méi)有老化之前它自己就先被分解了，那就沒(méi)有任何保護(hù)了，所以現(xiàn)在的警示帶基本都采用不降解的PE材料。

Now there are more and more underground pipelines, and there are more and more vertical pipelines. Some old pipelines are still running and have not been abandoned. But if there is no good warning tape for protection, but low-grade material products are selected, then the pipeline itself will be decomposed before it is aged, so there will be no protection. So now the warning tape basically uses non degradable PE materials.

供水警示帶的原材料具有良好的PE（聚乙烯）顆粒性能。無(wú)味、、手感如蠟、耐低溫性?xún)?yōu)良（很低工作溫度可達(dá)-100~-70℃），在-60℃仍能保持良好的機(jī)械性能，工作溫度為80~110°C?；瘜W(xué)穩(wěn)定性好，耐大多數(shù)酸堿侵蝕（不耐酸具有氧化性）。常溫下不溶于一般溶劑，吸水率低，電絕緣性?xún)?yōu)良。經(jīng)過(guò)測(cè)試，埋在地下30年，不會(huì)腐爛。

The raw material of water supply warning tape has good PE (polyethylene) particle performance. It is tasteless, non-toxic, feels like wax, and has excellent low temperature resistance (the working temperature can reach -100~-70 ℃ at a very low temperature). It can still maintain good mechanical properties at -60 ℃, and the working temperature is 80~110 ° C. Good chemical stability, resistant to most acid and alkali erosion (acid intolerance and oxidation). It is insoluble in general solvents at room temperature, with low water absorption and excellent electrical insulation. After testing, it will not rot after being buried underground for 30 years.

另一個(gè)是過(guò)程。大部分吹膜設(shè)備是很新的三層共擠設(shè)備，可以保證警示帶半成品的橫向和縱向撕裂強(qiáng)度，可以有效控制產(chǎn)品的厚度和寬度根據(jù)技術(shù)文件，超標(biāo)會(huì)增加成本。然后是印刷過(guò)程，如果再都的警示帶沒(méi)有抓好，管道埋在地下3-5年就會(huì)褪色，就不能起到警示作用。

The other is the process. Most of the film blowing equipment are very new three-layer coextrusion equipment, which can ensure the transverse and longitudinal tear strength of the semi-finished warning tape, and can effectively control the thickness and width of the product. According to the technical documents, exceeding the standard will increase the cost. Then there is the printing process. If the warning tape of zaidu is not grasped well, the pipeline will fade after being buried underground for 3-5 years, so it cannot serve as a warning.

此外在管道埋地施工過(guò)程中，施工人員將警示帶與管道同向鋪設(shè)在上方30-50cm處，具有很好的警示提醒作用，這就很大程度避免了其它在附近施工時(shí)無(wú)意損壞管道，選成管道防腐層破損，更嚴(yán)重的還會(huì)造成管道泄露。為防止管道運(yùn)行出現(xiàn)風(fēng)險(xiǎn)，現(xiàn)在施工設(shè)計(jì)部門(mén)都將此產(chǎn)品列入了施工技術(shù)規(guī)范。

In addition, during the buried construction of the pipeline, the construction personnel will lay the warning tape in the same direction with the pipeline at the upper 30-50cm, which has a good warning effect, which largely avoids other unintentional damage to the pipeline during nearby construction, such as the damage of the pipeline anti-corrosion coating, and even more serious, the leakage of the pipeline. In order to prevent the risk of pipeline operation safety, the construction design department has now included this product in the construction technical specifications.

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