In recent years, with the growing of China's steel production, steel structure, with its own advantages, in the construction of the proportion is more and more big, the steel structure is also made great breakthrough. Steel tube structure also made big breakthrough. The biggest advantage of steel tube structure is it can combine  functional requirement of the building and sensory demands as well as economic benefits perfectly.  Steel structure of pipe truss structure with its unique advantages to get the favor of people.

Compared with the space frame structure, pipe truss structure saves the bottom chord ball node of the longitudinal bars and space frame, and can meet the requirements of various architectural form, especially the construction of arch and arbitrary curve shapes have more advantages than the space truss structure. Its stability to different, saves the material consumption. Steel tube truss structure is developed on the basis of the space truss structure, compared with the space truss structure has its unique superiority and practicability, steel weight of the structure is more economic.

With the traditional open section (h-beam and I word steel), compared to steel truss pipe truss structure section material around the neutral axis is evenly distributed, the cross section at the same time has good compressive and flexural bearing capacity and large stiffness, no node board, simple structure, pipe truss structure is the most important of good appearance, easy to shape have certain adornment effect.Pipe truss structure overall performance is good, big torsional rigidity and appearance, production, installation, roll over, lifting is easy ;Made of cold bending thin-wall steel pipe truss, with light, good rigidity, save steel structure, and can give full play to the advantages of material strength, especially in the controlled by the slenderness ratio of compressive bar and the supporting system using the more economical.Currently USES this kind of structures of basic belong to public buildings.The structure is aesthetically pleasing (built flat, round arch, arbitrary curved shape), making convenient installation, good structure stability, large roof stiffness, good economic effect.

Truss structure  is a lattice structure which the bars connect at the end ,  tube truss structure  is refers to the structure of the bars are circular tube bar.  Axis of the truss rods in most cases only by tension or stress, the stress distribution on cross section is uniformity , and therefore it is easy to play the role of the materials, these characteristics make truss structure materials economy, structure self-weight is small.
Easy to form various shapes so as to adapt to different USES, such as used as the simply supported girder and arch, framework and tower, etc., so many large span truss structure in the venue construction, such as convention and exhibition center, stadiums, or some other has been widely used in large public buildings.

Most of bars of truss structures are node connected by welding, and before welding, need before hand blanking cutting according to the weld shape of the bars which will be welded by the web member and chord , this needs junction thread cutting and grooving cutting at chord end in CHS nozzle-vessel . Due to the bar and bar in the truss structure, the curve is a type of intersection between bar end cross section shape is more complex, so commonly use two methods of machinery automatic cutting processing and artificial manual cutting machining in the actual cutting processing.

Comparing with space frame structure,the bar of pipe truss is less, the node is beautiful,and it won't appear larger ball nodes, it use large-span space truss structure which build all kinds of slender long-span structure. In public buildings, especially in the construction of large exhibition and sports venues,pipe truss structure has extensive application prospects.