Pipe Truss Production and Processing and Engineering Contracting

• Type: Light Section Steel
• Standard: GB, ASTM
• Trademark: Carbon Structural Steel, XHZT
• Forming: Forging Steel
• Connection Form: Welded Connection
• Member: Steeltruss
• Model NO.: xhst
• Type of Steel For Building Structure: High-Strength Steel
• Carbon Structural Steel: Q235
• Residential Wall Structure: Wall Support
• Application: Steel Workshop, Steel Structure Platform, Steel Fabricated House, Structural Roofing, Frame Part, Steel Walkway and Floor, Steel Structure Bridge
• After-sales Service: Offer Egineer
• Warranty: 1
• Transport Package: No
• Specification: XHST
• Origin: China
• HS Code: 7308900000
• Production Capacity: 20sets/Month

Product Description

Pipe truss production and processing and engineering contracting

 

Pipe truss refers to a lattice structure composed of round rods connected to each other at the ends. Trusses make the truss structure economical in material, light in structural weight, and easy to form a variety of shapes to adapt to different uses, such as simple trusses, arches, frames and towers. In recent years, with the continuous growth of iron and steel production in China, tube trusses are being used more and more widely, accounting for an increasing proportion in construction, industrial plants, automobiles and other industries equipment platform production lines, logistics warehousing, public buildings, gymnasiums, business clubs, high-speed rail platforms, subway platforms, high-rise business buildings, etc., are widely used. The steel pipe structure has also made a great breakthrough. The biggest advantage of the steel pipe structure is that it can perfectly combine the functional requirements, sensory requirements and economic benefits of the building.

structural features of Pipe truss

Compared with the grid structure, the tube truss structure can meet the requirements of different architectural forms by eliminating the lower chord longitudinal bar and the ball node of the grid frame, especially the circular arch and arbitrary curve shape are more advantageous than the grid structure. Its anisotropic stability is the same, saving the amount of material. Steel pipe truss structure is developed on the basis of the grid structure, compared with the grid structure has its unique advantages and practicability, and the amount of steel used in the structure is more economical. Compared with the traditional open section (H-shaped steel and I-shaped steel) steel trusses, the section material of the tube truss structure is more evenly distributed around the neutral axis, so that the section has good compressive and flexural and torsional bearing capacity and greater stiffness at the same time, and the joint plate is not required, and the structure is simple. The most important thing is that the pipe truss structure has a beautiful appearance and is easy to shape and has a certain decorative effect. Tubular truss structure has good overall performance, large torsional stiffness and beautiful appearance, and it is easy to manufacture, install, turn over and lift. The steel pipe roof truss made of cold-formed thin-wall steel has the advantages of light structure, good rigidity, saving steel, and giving full play to the strength of the material, especially in the pressure rod and support system controlled by the slenderness ratio. Buildings with this structure are basically public buildings. The structure has the characteristics of beautiful shape (can be built flat, round arch, arbitrary curve shape), easy production and installation, good structural stability, large roof stiffness, good economic effect and so on.
Application of tube truss


Truss refers to the lattice structure composed of rods connected to each other at the end, and tube truss means that the rods in the structure are all round tube rods. In most cases, the rods in the truss are only subject to axial tension or pressure, and the stress is evenly distributed on the cross section, so it is easy to play the role of the material, which makes the material economy of the truss structure and the structure's self-weight small. It is easy to form a variety of shapes to adapt to different uses, such as simple trusses, arches, frames and towers, etc., so the truss structure is widely used in many large-span stadium buildings today, such as exhibition centers, sports stadiums or other large public buildings.
Most of the rods in the truss structure are welded at the joint, and before welding, it is necessary to cut the belly rod and string rod according to the weld shape of each rod to be welded in advance, which requires the intersecting line cutting of the belly rod end and the slot cutting of the string rod. Because the bar and the bar in the truss structure are intersected by the intersecting line type, the section shape of the end of the bar is more complicated, so in the actual cutting processing, mechanical automatic cutting and manual cutting are generally used for processing.

 

Fabrication and technical difficulties of steel structure of pipe truss

1 Cutting of groove of steel pipe intersecting line
A truss composed of steel pipes, with a large number of pipes intersecting the groove. The pipe intersecting line is a spatial curve, and the Angle of the groove changes with the change of the curve. The cutting quality of the pipe intersecting line is directly related to the welding quality and appearance quality of the truss, and is the key to the production process. The CNC intersecting line cutting machine is used for cutting, which can be controlled automatically on the computer according to the lofting program, and can be formed at one time, and the Angle of the bevel can be changed with the circumference to meet the different welding requirements of the toe, root and side of the intersecting line joint.
2 Linear bending of steel pipe
The chord of the main truss is generally a space curve, and the linear bending arc of the pipe is beautiful and should meet the standard requirements, in order to ensure that the bending of the steel pipe is smooth and smooth, and to prevent bulging and wrinkling.
3-node hole system
Steel structure parts drilling using CNC plane drilling or rocker arm drilling for drilling, in order to ensure the accuracy and quality of drilling, the use of die drilling must have lofting lines to draw the benchmark axis and hole center, the use of CNC drilling processing products are subject to inspection before batch drilling, parts, components after drilling are subject to inspection before they can be transferred to other processes.
4 Control of welding sequence and welding allowance
Because the welding deformation will affect the overall precision size of the component, a reasonable welding sequence and welding method should be developed in the welding process.
1) For the welding margin of the chord joint, an experimental node should be tested, measured after the completion of welding, and the size of the welding margin is determined according to the measured value.
2) The truss is generally welded to the middle node, and then extended to the nodes at both ends of the truss.
3) The upper and lower chord are generally welded to the lower chord, and then welded to the upper chord, and the overall truss will not produce downtorsion deformation.