黑夹克保温钢管管材包括螺旋钢管，直缝钢管和无缝钢管，外层为黑色聚乙烯资料的叫做黑夹克保温管。
Black jacket insulation steel pipe includes spiral steel pipe, straight seam steel pipe and seamless steel pipe. The outer layer of black polyethylene material is called black jacket insulation pipe.
黑夹克保温钢管用高压发泡机在钢管与外护层之间构成的空腔中一次性注入硬质聚氨酯泡沫塑料原液而成，再用聚乙烯停止钢管外表的处置，构成外层的维护层。
Black jacket insulating steel pipe is made by injecting rigid polyurethane foam plastics into the cavity formed by high pressure foamer between the steel pipe and the outer protective layer at one time, and then using polyethylene to stop the disposal of the outer surface of the steel pipe to form the outermost maintenance layer.
聚乙烯外壳直埋保温管高密度聚乙烯保温管直埋式预制保温管由保送介质的钢管、聚氨酯硬质泡沫保温层和高密度聚已烯外套管严密分离而成，直埋保温管主要用于城镇集中供热管网，石油保送管线，高寒地域输水管线及产区工业管道工程。
Polyethylene buried directly buried heat insulation pipes, high density polyethylene insulation pipes, directly buried precast heat insulation pipes are tightly separated from the steel pipes, polyurethane rigid foam insulation layer and high density polyethylenes coat pipe, and directly buried insulation pipes are mainly used for urban central heating network, oil delivery pipeline, high cold area water conveyance pipeline and production area. Industrial Pipeline Engineering.
黑夹克聚氨酯保温钢管由于聚氨酯硬质泡沫保温层严密地粘结在钢管外皮，隔绝了空气和水的渗入，能起到良好的防腐作用。同时它的发泡孔都是闭合的，吸水性很小。高密度聚乙烯外壳、玻璃钢外壳均具有良好的防腐、绝缘和机械性能。
The black jacket polyurethane heat preservation steel pipe is tightly adhered to the outer skin of the steel pipe because of the rigid polyurethane foam insulation layer, which can isolate the infiltration of air and water, and can play a good anti-corrosive role. At the same time, its foaming holes are closed and its water absorption is very small. High density polyethylene shell and FRP shell have good anti-corrosion, insulation and mechanical properties.
为了加强夹克层与泡沫层间的粘结力，夹克管内外表需求停止处置。实验时，采用内壁喷砂粗化和电晕极化处置方法。经测试，这两种方式，关于增加夹克层与泡沫层间的粘结力效果相当。但是，运用电晕极化处置效率更高，质量更易控制。依据中石油管道科学研讨院的研讨成果，采用聚乙烯管内壁电晕处置后，泡沫与夹克的粘结力可到达0.70～1.42MPa，远远超越泡沫自身强度。
In order to strengthen the cohesive force between the jacket layer and the foam layer, the inside and outside surface of the jacket pipe is discontinued. In the experiment, sand blasting coarsening and corona polarization were used. It is tested that these two methods are equivalent to increasing the cohesive force between the jacket layer and the foam layer. However, the use of corona polarization disposal is more efficient and the quality is easier to control. According to the research results of the China Petroleum Pipeline Research Institute, the cohesive force of the foam and jacket can reach 0.70 to 1.42MPa after corona treatment of the inner wall of polyethylene pipe, far exceeding the strength of the foam itself.
但是实践上，经过检测，我们运用的经过电晕处置后工业化消费的夹克管内壁与泡沫的粘结力达不到以上数值，但能够到达相关标准请求的0.05N/m值，从几次实验和几个工程的应用状况看，满足这个值在工程上是能够承受的。在实践工作中，需求进一步研讨如何进步极化水平，以到达更好的内壁粘结效果。
However, in practice, after testing, the cohesive force of the inner wall and foam of the jacket pipe which has been consumed by corona after industrial consumption can not reach the above value, but it can reach the 0.05N/m value of the relevant standard request. From several experiments and several engineering applications, this value can be accepted in engineering. In practice, it is necessary to further study how to improve the polarization level in order to achieve better bonding effect.
为了加强夹克层与配重层间的粘结力，必需对夹克管表面面停止粗化处置。开端采用电动钢丝刷对夹克管外壁停止人工打磨，外表质量不容易控制。如今采用机械刀具自动刻槽的方法停止处置，经检测打磨后夹克层与配重层间的抗剪切强度可到达0.2MPa左右。但是，假如混凝土层发作细微开裂（这是允许的），那么部分的混凝土依然可能发作滑移，所以如何更好地停止夹克管外壁的粗化与避免开裂（特别是端部开裂）依然是影响质量的关键。
In order to strengthen the bonding force between jacket layer and counterweight layer, it is necessary to stop coarsening the surface of jacket tube. The outer wall of jacket pipe is stopped by manual polishing with electric wire brush at the beginning, and the appearance quality is not easy to control. At present, mechanical tool grooving method is used to stop disposal. After testing and grinding, the shear strength between jacket layer and counterweight layer can reach about 0.2 MPa. However, if the concrete layer cracks slightly (which is allowed), then part of the concrete may still slip, so how to better stop the coarsening of the outer wall of jacket pipe and avoid cracking (especially cracking at the end) is still the key to affect the quality.
With a brief summary of the straight seam steel pipe on the black jacket, I hope it will be helpful to our customers. If you don't understand or ask for help, please click on our official website: http://www.sdhpgy.com or call for consultation. We will try our best to solve it for you.
