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id="videoPlayer" style="height:400px"></div> <div id="jfllfnbh51" class="shipintext"> <i></i> 回收過(guò)期化工原料庫(kù)存化工原料回收廠家 </div> </div> <script> var video = $('<video class="video-js vjs-default-skin vjs-big-play-centered" data-setup="{}" style="width:100%;height:100%"></video>'); $('#videoPlayer').append(video); videojs(video[0],{ bigPlayButton: true, textTrackDisplay: false, posterImage: false, errorDisplay: false, controls: true, autoplay: false, }).src("http://video.huangye88.net/upload/758/2459758/20230406083617-9495/index.m3u8"); </script>  <div> <p>規(guī)格產(chǎn)品說(shuō)明：在管路系統(tǒng)中，彎頭是改變管路方向的管件。按角度分，有及三種*常用的，另外根據(jù)工程需要還包括等其他非正常角度彎頭。彎頭的材料有鑄鐵、不銹鋼、合金鋼、可煅鑄鐵、碳鋼、有色金屬及塑料等。與管子聯(lián)結(jié)的方式有：直接焊接*常用的方式法蘭聯(lián)結(jié)、熱熔連接、電熔連接、螺紋聯(lián)結(jié)及承插式聯(lián)結(jié)等。按照生產(chǎn)工藝可分為：焊接彎頭、沖壓彎頭、鑄造彎頭等。<br/><img src="http://oss10.huangye88.net/live/2023/06/10/06f3248713081092f777aeb7e372cca0.jpg@750w_750h_90Q" /><br/>聚氨酯直埋保溫管無(wú)補(bǔ)償直埋敷設(shè)即利用土壤與外套管之間的摩擦阻力固定管道。當(dāng)土壤與管道的摩擦阻力之和等于或大于管道膨脹力時(shí)，管線(xiàn)不再伸長(zhǎng)，即可不加補(bǔ)償器，這時(shí)管道在熱脹冷縮過(guò)程中所產(chǎn)生的位移勢(shì)能，被儲(chǔ)存在管道壁上；無(wú)補(bǔ)償直埋敷設(shè)時(shí)，預(yù)制直埋聚氨酯保溫管誠(chéng)信廠家在管道上不用設(shè)置補(bǔ)償器、滑動(dòng)支架、固定支架等管道附件，管道在直管段基本處在停止?fàn)顟B(tài)，而在彎管、出土段等自由端所謂“摩擦長(zhǎng)度l”范圍內(nèi)有位移；依據(jù)《集中供熱設(shè)計(jì)手冊(cè)》在交變次數(shù)15000次、熱媒允許溫差83℃以?xún)?nèi)其應(yīng)力值不會(huì)超過(guò)許用應(yīng)力。這種埋設(shè)方式適用于95℃以下的低溫供熱管線(xiàn)。生活小區(qū)集中空調(diào)水溫為5℃~70℃，可采用無(wú)補(bǔ)償直埋敷設(shè)方式。<br/><img src="http://oss10.huangye88.net/live/2023/06/11/7b1e289b19ffe7004ab72bdf53491869.jpg@750w_750h_90Q" /><br/>預(yù)制直埋聚氨酯保溫管聚氨酯保溫鋼管優(yōu)勢(shì)特點(diǎn)：耐候保溫聚氨酯泡沫優(yōu)點(diǎn)具有低溫?zé)醾鲗?dǎo)率，耐候保溫.<br /> 1、降低工程造價(jià)<br /> 據(jù)有關(guān)部門(mén)測(cè)算，一般情況下聚氨酯保溫鋼管可以降低工程造價(jià)的25%（采用玻璃鋼做保護(hù)層）和10%（采用度聚乙烯做保護(hù)層）左右。<br /> 2、熱損耗低，節(jié)約能源<br /> 預(yù)制直埋聚氨酯保溫管聚氨酯導(dǎo)熱系數(shù)為：λ=0．013—0．03kcal/m?h?oC，比其他過(guò)去常用的管道保溫材料低得多，保溫效果提高4~9倍。再有其吸水率很低，約為0．2kg/m2。吸水率低的原因是由于聚氨酯泡沫的閉孔率高達(dá)92%左右。低導(dǎo)熱系數(shù)和低吸水率，加上保溫層和外面防水性能好的度聚乙烯或玻璃鋼保護(hù)殼，改變了傳統(tǒng)地溝敷設(shè)供熱管道“穿濕棉襖”的狀況，大大減少了供熱管道的整體熱損耗，熱網(wǎng)熱損失為2%，遠(yuǎn)遠(yuǎn)小于國(guó)際10%的標(biāo)準(zhǔn)要求。<br /> 3、防腐蝕、絕緣性能好，使用壽命長(zhǎng)<br /> 預(yù)制直埋聚氨酯保溫管由于聚氨酯硬質(zhì)泡沫保溫層緊密地粘結(jié)在鋼管外皮，隔絕了空氣和水的滲入，能起到良好的防腐作用。<br/><img src="http://oss10.huangye88.net/live/2023/06/10/2735a7a0e3f8fffae04bcf74f86490da.jpg@750w_750h_90Q" /><br/>聚氨酯發(fā)泡保溫鋼管高素質(zhì)加工技巧，聚氨酯保溫鋼管保溫管殼自三十年代聚氨酯組成資料誕生以來(lái)，一直作為一種的絕熱保溫資料而得到敏捷開(kāi)展，其使用規(guī)模也越來(lái)越廣泛，更因?yàn)槠涫┕ず?jiǎn)潔、節(jié)能防腐效果明顯而被很多地用于各種供熱、制冷、輸油、輸汽等各種管道。很多地用于各種供熱、制冷、輸油、輸汽等各種管道。施工便利：將保溫層—聚氨酯發(fā)泡用現(xiàn)場(chǎng)澆罐或預(yù)制成型等辦法敷于鋼管的防腐層外，辦法簡(jiǎn)潔，工效方便。導(dǎo)熱系數(shù)?。壕郯滨ケ毓軞さ膶?dǎo)熱系數(shù)在保溫資料中是*的，因而能使物料的熱丟失削減到極限。防水、防腐、耐老：因?yàn)榫郯滨ヅ菽拈]孔率達(dá)92%以上，因而，用聚氨酯泡沫作為直埋管道的保溫層，不只能夠起保溫隔熱效果，并且能有效地避免水，濕氣以及其它多種腐蝕性液體、氣體的滲透，避免微生物的繁殖和開(kāi)展。<br/><img src="http://oss10.huangye88.net/live/2023/06/10/de561482bf05278f764b6ed1d1f429d3.jpg@750w_750h_90Q" /><br/>預(yù)制直埋聚氨酯保溫管質(zhì)量為王<br /> 夾克直埋聚氨酯保溫管是由度聚乙烯外保護(hù)層、聚氨脂硬質(zhì)泡沫塑管和鋼管組成。直埋式保溫管是由輸送介質(zhì)的鋼管，度聚乙烯外套管，以及鋼管和外套管之間的硬質(zhì)聚氨酯泡沫保溫層緊密結(jié)合而成。保溫層材料為密度60kg/m3至80kg/m3的硬質(zhì)聚氨酯泡沫，充分填滿(mǎn)鋼管與套管之間的間隙，并具有粘接強(qiáng)度，使鋼管、外套管及保溫層三者之間形成一個(gè)牢固的整體。聚氨酯直埋保溫管泡沫具有良好的機(jī)械性能和絕熱性能，通常情況下可耐溫120℃通過(guò)改性或與其它隔熱材料組合可耐溫180℃。<br/><img src="http://oss10.huangye88.net/live/2023/06/10/ee4b0f8123804274406eb7aa3c2ade8d.jpg@750w_750h_90Q" /><br/>產(chǎn)品規(guī)格：<br /> 可按需求定制<br /> 應(yīng)用范圍：<br /> 夾克直埋聚氨酯保溫管殼廣泛應(yīng)用于液體、氣體的輸送管網(wǎng)，化工管道保溫工程石油、化工、集中供熱熱網(wǎng)、中央空調(diào)通風(fēng)管道和市政工程等。<br /> 夾克直埋聚氨酯保溫管的優(yōu)點(diǎn)：<br /> （1）工程造價(jià)低；<br /> （2）占地少，施工快，有利環(huán)境保護(hù)；<br /> （3）夾克管節(jié)約能源，防腐，絕緣性能好，使用壽命長(zhǎng)；<br /> （4）夾克直埋聚氨酯保溫管殼設(shè)有滲漏報(bào)警線(xiàn)，安全。一旦管道某處發(fā)生滲漏，通過(guò)報(bào)警線(xiàn)的傳導(dǎo)，便可在檢測(cè)儀表上顯示出保溫管道滲水、漏水的準(zhǔn)確位置及滲漏程度的大小，以便通知檢滲人員迅速處理漏水的管段，供熱管網(wǎng)的安全運(yùn)行。<br/><img src="http://oss10.huangye88.net/live/2023/06/11/30439ae353d63f5ca7fcfa80663cbb1a.jpg@750w_750h_90Q" /><br/>聚氨酯保溫管的保溫性能好，熱損失僅為傳統(tǒng)管材的25%，長(zhǎng)期運(yùn)行可節(jié)約大量能源，顯著降低能源成本。<br /> 聚氨酯保溫管具有很強(qiáng)的防水和耐腐蝕能力，不需附設(shè)管溝，可直接埋入地下或水中，施工簡(jiǎn)便迅速，綜合造價(jià)低。<br /> 聚氨酯保溫管在低溫條件下也具有良好的耐腐蝕和耐沖擊性，可直接埋入地下凍土。<br /> 聚氨酯保溫管，使用壽命可達(dá)30-50年，正確的安裝和使用可使管網(wǎng)維修費(fèi)用極低。<br /> 聚氨酯保溫管，可設(shè)置報(bào)警系統(tǒng)，自動(dòng)檢測(cè)管網(wǎng)滲漏故障，準(zhǔn)確指示故障位置并自動(dòng)報(bào)警。<br/><img src="http://oss10.huangye88.net/live/2023/06/10/b70ffadf41e095480ea7eb224ad334f4.jpg@750w_750h_90Q" /><br/>聚氨酯直埋無(wú)縫保溫鋼管行業(yè)應(yīng)用保溫管也叫聚氨酯夾克管，由度聚乙烯外維護(hù)層、聚氨脂硬質(zhì)泡沫塑管和鋼管組成。聚氨酯保溫管工程造價(jià)低，占地少，施工快。聚氨酯保溫管節(jié)約能源，防腐，絕緣功能好，運(yùn)用壽數(shù)長(zhǎng)。此外聚氨酯保溫管均設(shè)有滲漏報(bào)警線(xiàn)，安全。一旦管道某處發(fā)作滲漏，經(jīng)過(guò)報(bào)警線(xiàn)的傳導(dǎo)，便可在檢測(cè)儀表上顯示出保溫管道滲水、漏水的方位及滲漏程度的巨細(xì)，以便告訴檢滲人員敏捷處置漏水的管段，確保供熱管網(wǎng)的安全運(yùn)轉(zhuǎn)。<br/><img src="http://oss10.huangye88.net/live/2023/06/10/012b9a1c43e23797febe4c4c47898eb4.jpg@750w_750h_90Q" /><br/>鋼套鋼直埋蒸汽保溫管補(bǔ)償器采用波紋管補(bǔ)償器時(shí)，建議與管道一起做成直埋式，為防止散熱和滲透水造成波紋管補(bǔ)償器腐蝕，應(yīng)該做成保溫和防水密封結(jié)構(gòu)。為保持內(nèi)固定受推力的合理性和管線(xiàn)運(yùn)行期間補(bǔ)償器的穩(wěn)定性，建議補(bǔ)償器在內(nèi)固定兩端對(duì)稱(chēng)布置，并在補(bǔ)償器兩端各加一個(gè)導(dǎo)向支架，以補(bǔ)償器僅承受軸向推力，補(bǔ)償器的使用壽命。</p> </div> <div id="jfllfnbh51" class="pages"> <span id="jfllfnbh51" class="leftpage"><font>上一條 </font><a href="http://www.xinite.com/ershouhuishou/88-9f1bgdvfs4f4ce.html" target="_blank" title="虎林回收纖維素">虎林回收纖維素</a></span> <span id="jfllfnbh51" class="rightpage"><font> 下一條</font><a href="http://www.xinite.com/ershouhuishou/88-1a1mchfcf6c542.html" target="_blank" title="虎林回收纖維素">虎林回收纖維素</a></span> </div> </div> </div> </div> </div> <div id="jfllfnbh51" class="list"> <h2 class="titles" style="float:left;">平?jīng)隽姿岫滗嚮厥障嚓P(guān)信息</h2> <a class="r-more" rel="nofollow" target="_blank" style="float:right;margin-right:30px;">查看更多信息</a> 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