黑夾克保溫材料用于各類冷水、冷氣、冷油管線圓形、異形及任何形體的管道保溫。 防止結(jié)露：聚乙烯發(fā)泡管材料為閉孔結(jié)構(gòu)，它是靠閉孔內(nèi)的氣體絕熱而非聚乙烯材料實現(xiàn)絕熱。其具有優(yōu)異的抗水汽滲透能力。所形成內(nèi)置的隔汽屏障，即是保溫層又是隔汽層，不需另設(shè)隔汽層。濕阻因子ц數(shù)值遠(yuǎn)遠(yuǎn)大于其它保溫材料。能有效地避免結(jié)露現(xiàn)象發(fā)生。

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  一步法保溫管設(shè)備產(chǎn)品說明：

該技術(shù)是把絕熱層和防腐層同時包覆在鋼管道外表面上，從而形成管線的保溫防腐層，屬國內(nèi)*。與其他方法相比，具有連續(xù)作業(yè)、生產(chǎn)效率高、成本低、節(jié)約能源、無污染環(huán)境等突出優(yōu)點，1985年獲國家科技進(jìn)步二等獎，幾經(jīng)科技更新，達(dá)到先進(jìn)水平。

        用一步法成型方法建成的鋼管道絕熱防腐生產(chǎn)線自動化程度高，絕熱防腐層的質(zhì)量*符合國家標(biāo)準(zhǔn)。

        該技術(shù)自83年研制成功以來，經(jīng)近二十年的改進(jìn)提高，目前已形成作業(yè)管線范圍達(dá)φ48mm～φ1000mm以上。絕熱防腐層鋼管主要用于原油輸送管道、直埋式供熱管道和制冷系統(tǒng)管道的絕熱防腐，應(yīng)用前景十分廣泛，率*。可應(yīng)用于集中供熱單位、遠(yuǎn)距離輸油、供水、供氣等工程。

        鋼管道防腐保溫泡沫夾克成型技術(shù)是八十年 初，由原來石油部基建局組織專家赴加拿大考察后，在國內(nèi)油田推廣的新技術(shù)，并在國外 “ 二步法 ” 成型工藝的基礎(chǔ)上，由勝利油田油建工藝技術(shù)研究所于 1983 年推出“一步法”成型技術(shù)，即鋼管道泡沫防腐保溫成型技術(shù)與外部保溫用夾克層一次成型，我們稱這為“一步法”作業(yè)。這一工藝技術(shù)的成功，不但提高了作業(yè)效率，也大大節(jié)省了材料，降低了成本，方便了施工，很快這一技術(shù)在全國油田得到了推廣，并獲得了山東省科技成果， 1985 年獲得國家發(fā)明，直至目前，國內(nèi)沒有“一步法”技術(shù)問世。

聚氨酯直縫焊管表面淬火回火熱處理通常用感應(yīng)加熱或火焰加熱的方式進(jìn)行。主要技術(shù)參數(shù)是表面硬度、局部硬度和有效硬化層深度。硬度檢測可采用維氏硬度計，也可采用洛氏或表面洛氏硬度計。試驗力(標(biāo)尺)的選擇與有效硬化層深度和湖南直縫焊管表面硬度有關(guān)。這里涉及到三種硬度計。