Introduce the performance of every kind of gas pipe material and technology-economy comparison is made, how to choose pipe material reasonable is discussed.
介绍了各种燃气管材的性能，对各种管材作了技术经济比较，讨论了如何合理选择管材。
Polyethylene pipe is very good material for engineering, and it is wildly used for gas engineering.
聚乙烯管道是一种优良的工程管道材料，在燃气工程上应用尤其广泛。
Pipe wrap tissue is used as a basical material for anti-corrosion wrapping on steel pipelines for oil or gas distribution.
缠绕管道毡是缠绕包覆在油、气管道上防腐的理想材料。
Polyethylene (PE) pipe is very good material for engineering, and it is wildly used for gas engineering.
聚乙烯管道是一种非常好的工程管道材料，在燃气工程上应用尤其广泛。
The corrugated stainless steel tubing, a new type of gas engineering pipe material, is recommended through the introduction of an American apartment's gas project reform.
通过介绍美国某公寓燃气改造工程，推荐一种新型的燃气工程管材波纹不锈钢管。
The selection of pipe material for insertion method is introduced, and the influence of insertion method construction on transmission capacity of gas pipeline is discussed.
介绍了穿插法中管材的选择，讨论了穿插法施工对燃气管道输送能力的影响。
For dense phase conveying of pulverized material there is a close relationship among many parameters, such as fluidization velocity, carrier gas flow rate, pipe diameter etc.
结果表明，粉状物料的浓相输送与流化速度、补气量、输送管径有关。
Due to different conditions, such as pipeline material, environment, load bearing, different cracks arise in the pipe wall or welding seam, which will lead to oil or gas leakage.
由于管道的材质、所处的环境以及承受荷载等条件不同，在管壁或焊接部位会出现不同程度的裂纹，从而导致管道破裂产生油气泄漏。
Another advantage of the invention is that the fluidization gas flow and the propellant flow are also suitable to transport remains of the material to be conveyed out of the conveyor pipe (3).
本发明的另外一个优点在于，流化气流与动力气流也可将输送管道(3)中的物料残渣传送出来。
Another advantage of the invention is that the fluidization gas flow and the propellant flow are also suitable to transport remains of the material to be conveyed out of the conveyor pipe (3).
本发明的另外一个优点在于，流化气流与动力气流也可将输送管道(3)中的物料残渣传送出来。
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