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。 防止結露：聚乙烯發泡管材料為閉孔結構，它是靠閉孔內的氣體絕熱而非聚乙烯材料實現絕熱。其具有優異的抗水汽滲透能力。所形成內置的隔汽屏障，即是保溫層又是隔汽層，不需另設隔汽層。濕阻因子ц數值遠遠大于其它保溫材料。能有效地避免結露現象發生。

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  一步法保溫管設備產品說明：

該技術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*。與其他方法相比，具有連續作業、生產效率高、成本低、節約能源、無污染環境等突出優點，1985年獲國家科技進步二等獎，幾經科技更新，達到先進水平。

        用一步法成型方法建成的鋼管道絕熱防腐生產線自動化程度高，絕熱防腐層的質量*符合國家標準。

        該技術自83年研制成功以來，經近二十年的改進提高，目前已形成作業管線范圍達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管道的絕熱防腐，應用前景十分廣泛，率*?？蓱糜诩泄釂挝?、遠距離輸油、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，在國內油田推廣的新技術，并在國外 “ 二步法 ” 成型工藝的基礎上，由勝利油田油建工藝技術研究所于 1983 年推出“一步法”成型技術，即鋼管道泡沫防腐保溫成型技術與外部保溫用夾克層一次成型，我們稱這為“一步法”作業。這一工藝技術的成功，不但提高了作業效率，也大大節省了材料，降低了成本，方便了施工，很快這一技術在全國油田得到了推廣，并獲得了山東省科技成果， 1985 年獲得國家發明，直至目前，國內沒有“一步法”技術問世。

聚氨酯直縫焊管表面淬火回火熱處理通常用感應加熱或火焰加熱的方式進行。主要技術參數是表面硬度、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。這里涉及到三種硬度計。