一、结构：管状输送带芯体以高强力帆布或钢丝绳为骨架，配以高强度高耐磨优质胶料为上下覆盖层，工作时胶带由平面渐变U形，最后卷成管状以实行封闭式输送。
二、用途：广泛应用于冶金、电力、化工、港口、码头、建材、煤炭、矿山、粮食等行业散状物料的密闭输送。具有耐磨、耐热、耐寒、耐化学腐蚀、阻燃、抗静电等多种类型。
三、特点
1、为使胶带运行时呈圆管状，管状带本身具有适当的横向刚性，可保证良好的管状保持性和密封性；
2、带体具有良好的弹性和纵向柔韧性，使带子能反复、长期的经受剧烈的弯曲和收缩；
3、带子具有优良的物理机械性能。因管状带运输物料时，其带体拉伸，覆盖胶长期受日光照射及风吹雨淋，因此，要求外覆盖胶具有较高的耐候、耐臭氧、耐紫外线、耐屈挠龟裂等性能，而内覆盖胶则应具有优良的耐磨性能。
4、由于管状带的特殊结构，使之在运输过程中呈管状密闭运送粉状物料，能有效的防止粉尘飞扬、洒落。不仅避免对环境造成污染、物料浪费，而且能防止物料受日晒、风吹、雨淋，保证被输送物料的质量。
5、采用管状输送带运输，物料被包裹在胶带里，增大了物料与胶带的接触面积和物料的内摩擦角，从而可提高输送机输送物料的倾角。普通带是输送机的倾角仅为22°，而管状输送机的倾角可达30°以上，输送机倾角增大，可缩短输送机的水平距离，节省投资。
6、采用管状带运输，带子呈管状后可以水平、垂直或曲线运行，运输线路可以在一定范围内按空间布置，无须设中间转运站，因而，节省建设投资。
7、管状带运输避免了跑偏，运行可靠，提高输送效率，具有更好的经济效益和更低的运行成本。
8、管状带输送物料，在卸料后的回程段也可输送物料，即双向运料。这是普通输送带无法做到的。由于反程也呈管状，不会洒落物料，因此全系统无污染，不须清扫费用。
I. Construction
The belt core of tubular conveyor belt takes high-strength canvas or steel cable as its carcass in combination with high-strength high abrasion-resistance high-quality rubber as the top and bottom rubber cover, during the operation, the rubber belt is changed gradually from flat plane to U shape and finally is rolled into tubular shape so as to achieve enclosed conveying. 
II. Application
It is widely applied in enclosed conveying of bulk materials in the sectors as of metallurgy, electric power, chemical engineering, harbor, wharf, building materials, coal, mine, grains etc. It has multiple types such as abrasion-resistant, heat-resistant, cold-resistant, corrosion-resistant, flame-resistant, antistatic etc. 
III. Features
1. In order to make the rubber belt takes on circular tubular shape, the tubular belt itself has appropriate transverse rigidness, which can ensure good retention and seal of tubular shape. 
2. The belt body has good elasticity and longitudinal flexibility, making the belt able to tolerate repeated and long-time violent bending and shrinkage; 
3. The belt has excellent physical and mechanical properties. Because when the tubular belt is conveying material, its belt body is stretched, and the cover rubber is long exposed to sunshine and weather, therefore, it is required that the outer cover rubber has higher resistance to weather, ozone, ultraviolet rays, flexure, cracking etc., while inner cover rubber should have excellent abrasion resistance.   
4. Because of special structure of tubular belt, it conveys powdery material in tubular closed condition during the conveying, thus it can effectively prevent dust fly and spill. This not only avoids pollution to the environment and material wastage, but also can prevent exposure of material to sunshine, wind and rain, thus ensuring the quality conveyed material. 
5. By adopting tubular conveyor belt for conveying, the material is wrapped in the rubber belt, this increasing the area of contact between material and rubber belt and internal friction angle of material, thus can increase the inclination angle of material conveying of the conveyor. Ordinary conveyor belt only has 22° inclination angle, whereas that of tubular conveyor can reach over 30°, therefore, increased inclination angle of conveyor can shorten the horizontal distance of the conveyor and save investment.   
6. With tubular belt adopted for conveying, after the belt presents tubular shape, it can run horizontally, vertically or curvilinearly, the conveying line can be arranged according to the space within a certain range without setting intermediate transfer station, therefore, construction investment can be saved.  
7. Tubular belt conveying avoids bias with reliable running, improved conveying efficiency and better economic benefit and lower running cost.  
8. With tubular belt for conveying material, the return run after discharge can also convey material, i.e. two-way conveying. This can not be achieved with ordinary conveyor belt. Because the return belt also presents tubular shape without material spill, there is no contamination and cleaning cost for the complete system.