skip to Main Content

Metal Buildings

Metal Buildings for Industrial, Commercial and Agricultural

Read More

Metal Buildings Solution

Metal Buildings design from Havit Steel provides an optimized solution for your project. Our professional team is ready to serve any buildings. We can provide you with the most efficient design and construction plan, which is fast and smooth to complete construction for your steel building projects.

Metal Buildings
Steel Industrial Building
Industrial

Steel Industrial Building

Steel Industrial Building designed from Havit Steel is an efficient solution for industrial facilities, whether you need to build manufacturing…

Steel Auto Shop Building
Steel Auto Shop Building
Commercial

Steel Auto Shop Building

Steel auto shop building is the ideal solution for customers who want to build an automotive workshop that can provide…

Steel Church Building
Steel Church Building
Commercial

Steel Church Building

Steel Church Building design and fabricated by the prefab steel structure, it will provide congregations with a durable and more…

Steel Cold Storage Building
Steel Cold Storage Building
Commercial

Steel Cold Storage Building

The steel cold storage building is made of steel structure and used as cold storage inside. If you plan to…

Commercial Steel Building
Commercial Steel Building
Commercial

Commercial Steel Building

Commercial steel building designed by Havit Steel can use for commercial purposes, including office buildings, car store buildings, retail buildings,…

Steel Carport Building
Steel Carport Building
Commercial

Steel Carport Building

With the rapid development of modern society and the economy, the number of car owners has continued to increase. At…

Steel Garage Building
Steel Garage Building
Commercial

Steel Garage Building

Steel garage building is an essential addition to any home or company, which adds home storage and protection to vehicles.…

Steel Office Building
Steel Office Building
Commercial

Steel Office Building

Metal structures are an effective solution for office buildings. Each office has its unique design elements, and our engineers will…

Steel Retail Building
Commercial

Steel Retail Building

We offer steel retail buildings to help customers integrate all your local needs, and we can design the perfect layout…

Steel Sport Building
Steel Sport Building
Commercial

Steel Sport Building

Steel structures lead the way in terms of efficiency, durability, and versatility. When you want to build a steel sport…

Agricultural Steel Building
Agricultural Steel Building
Agricultural

Agricultural Steel Building

There are more and more Agricultural Steel Building on the farm, and customized steel structure building manufactured by Havit Steel…

Steel Horse Stable Building
Steel Horse Stable Building
Agricultural

Steel Horse Stable Building

Prefab Steel Building is an ideal fit for the horse stable, which is an excellent choice to house your horses.…

Metal Buildings Specification

The metal buildings uses steel to form a load-bearing structure. Generally, beams, columns, trusses, and other components made of section steel and steel plates constitute a load-bearing structure, which together with roof, wall, and floor, form a building.

Compared with traditional concrete buildings, metal structure buildings use steel plates or section steel instead of reinforced concrete, higher strength, and better seismic resistance. And because the components can be manufactured in factories and installed on-site, the construction period is greatly reduced. Due to the reusability of steel, it can greatly reduce construction waste and become more environmentally friendly. Therefore, it is widely used in industrial buildings and civil buildings all over the world.

Advantage
1. Greatly save construction time. Construction is not affected by the season
2. Increase the use area of buildings, reduce construction waste and environmental pollution
3. Building materials can be reused, stimulating the development of other new building materials industries
4. Good seismic performance, easy to transform, flexible and convenient in use, bringing comfort and so on
5. High strength, lightweight, high safety and wealth of components, and lower building cost

Disadvantages:
1. Heat-resistant and non-fire-resistant, fire-resistant coatings are required
2. It is susceptible to corrosion, and the surface needs to be coated with anti-corrosion coatings to reduce or avoid corrosion and increase durability

Metal Buildings

Metal Building Kits

Steel Building Kits design from Havit Steel with advantage of Fast and Simple Construction, Wide Range Of Uses, Reasonable Cost, lower price than concrete building structure.

Metal Buildings Cladding

Metal Cladding System

Metal cladding system includes wall and roof cladding, skylight sheet, trim and flashing, gutter and downspout, insulation, which are essential components of metal building.

Metal Buildings

Steel Building Specs

Steel Building Specification provide the basic information about the Prefab Steel Building, which include Steel Warehouse, Industrial Workshop, Shed, and Garage Building.

We Are Here To Serve Any Type Of Metal Buildings

Please contact us. There’s a lot we can do for your steel building projects, small or large. Our team will provide you with the best quality construction solution

+86-152-05426602 sale@havitsteelstructure.com

Steel structure welding is the primary connection method of steel structure: to melt the welding rod and steel partially by the heat generated by the electric arc, and then condense into a weld by cooling, thus connecting the welded parts to one.

In the field of steel structure fabrication and installation, arc welding is widely used. The main arc welding types are flux-coated manual arc welding, automatic submerged arc welding, semi-automatic and automatic CO2 gas shielded welding, and self-protected arc welding. In some special applications, it is necessary to use electro slag welding and bolt welding.

Steel Structure Welding Methods

1.Electric arc welding

(1) welding rod arc welding

AC welding machine: The equipment is simple, the operation is flexible and convenient, and it can be welded in various positions without weakening the cross-section of the component, ensuring quality and low construction cost. It is a welding method widely used in construction sites.

DC welding machine: The welding technology is the same as using an AC welding machine, the arc is stable during welding, but the construction cost is higher than that of an AC welding machine. It is used for steel structures with higher welding quality requirements.

Electric arc welding

(2) Submerged arc welding

The metal is melted under the flux, the welding heat is concentrated, the penetration depth and efficiency are high, the quality is good, there is no splash phenomenon, the heat-affected zone is small, and the welding seam is uniform and beautiful; the operation technology should be low, and the working conditions are good. Straight fillet welds and butt welds with more considerable welding lengths and thicker plates in the factory.

Submerged arc welding

(3) Semi-automatic welding

The same as submerged arc welding machine welding, the operation is more flexible, but it is not convenient to use, always used for welding short or curved corners and butt welding.

(4) Gas shielded welding

It is light welding wire welding with CO2 or inert gas instead of welding flux protection arc; it can be welded in all positions, with good quality, fast melting speed, high efficiency, power saving, no need to remove welding slag after welding, but avoid wind during welding. They are usually used to weld thin steel plates and other metals, welding large thickness steel columns and steel beams.

gas shielded welding

2.Electroslag welding

The electric resistance heat welding produced by the current passing through the liquid slag can weld significant thickness welds—welding of large thickness steel plate, large diameter round steel, and cast steel. Combustion of acetylene and oxygen is mixed with a flame to melt metal for welding; when welding non-ferrous metals and stainless steel, gas welding powder protection is required. Sheet steel, cast iron, connectors, and surfacing welding.

Electroslag welding

3.Contact welding

Utilize the resistance heat welding generated when the current passes through the weldment, steel butt welding, steel mesh spot welding, embedded iron welding.

4.High-frequency welding

Use the heat generated by high-frequency resistors for welding. The longitudinal weld of thin-walled steel pipe.

Steel structure welding

Steel structure welding plays an essential role in the manufacturing and installation process, the quality of steel structure welding directly affects the appearance, and also plays a vital role in the strength of steel structure building.

steel structure welding

Steel Structure Welding Materials

The main tools used in the steel structure welding are welding electrode and run on plate. When selecting the welding rod, its model must be strictly following the design requirements. Then the welding rod should be baked according to the relevant instructions and placed in a heat preservation barrel for later use. Besides, in the welding process of steel structure buildings, it is strictly prohibited to use some electrodes with rusty cores, and acid and alkaline electrodes must not mix. Finally, when welding important parts of steel structure buildings, it is suitable to choose alkaline electrodes. When the welded steel structure parts need to be grooved, the arc starting plate needs to use, and the material selection of the arc starting plate must be the same as the material of the welded part.

run on plate

Main tools

The welding tools in steel building projects mainly include electrode holders, electrode insulation barrels, ovens, and electric welding machines.

Steel Structure Welding Tools

Welding conditions and requirements

Welding at low temperatures will cause rapid heat loss. For this reason, when the thickness of the steel reaches a certain level, the multi-layer welding process technology can be used appropriately. Besides, to prevent the rapid decrease of temperature, when welding a particular gap, it must be completed at one time to avoid the phenomenon of welding interruption. If a disruption occurs, it should handle adequately. Finally, in windy and snowy weather, welding should avoid as much as possible. If welding is indeed required, tents should set up, and then the steel structure should be welded indoors. At the same time, the welding process must ensure that the wind speed is within the appropriate limits. After the welding completed, proper materials should use to cool the welded objects slowly.

Reasons for Steel Structure Welding Deformation

1.The main types of welding deformation

Welding deformation mainly refers to the strain of the steel structure caused by high temperature during welding and the residual deformation problem that occurs in the structural steel member after the welding completed. Among the above two types of welding deformation, the most affecting welding quality is the residual welding deformation. The influence of residual welding deformation on steel structure buildings divided into overall and local distortion, and according to the shape characteristics of the deformity, it split into angular distortion, longitudinal bending, and buckling distortion, etc. Local deformation includes angular distortion and longitudinal bending, and overall strain also includes buckling distortion and so on. In the welding process of steel structures, the most likely type of deformation is the total deformation.

steel structure welding distortion

2.Reasons for welding deformation

The rigidity of the steel structure is undoubtedly one of the main factors affecting the welding deformation. The stiffness of the steel structure is mainly for the resistance of the structure to deformation such as bending and stretching, and the rigidity of the steel structure depends mostly on the steel The size of the structure, cross-sectional shape. Besides, the location and number of welding joints also affect the degree and condition of welding deformation to a certain extent.

Reasons for welding deformation


When the rigidity of the steel structure cannot reach a certain standard, the symmetrical position of the steel structure used as the welding joint. If the welding sequence is reasonable, the structure can only produce linear deformation, and it is impossible to produce bending deformation. Finally, the welding process also affects the degree of welding deformation to some extent. For example, when the welding current is large, and the welding speed is slow, it will cause more severe welding deformation. For this reason, in the process of welding steel structures, we must customize the objective and reasonable welding process measures and methods.

Deformation prevention work caused by steel structure welding process

Structure Control of Welding Nodes

To further avoid and improve the welding deformation, we should pay attention to the following aspects when designing the welded joints of the steel structure:

a. First, the number and size of the welds should control. When the steel structure has the problems of a large number of welds and large quantities in the welding process, it will provide more possibilities for welding deformation. For this reason, when designing the welded joints of steel structures, the number and size of welds should be controlled to a certain extent as possible to improve the welding deformation further;

b. Secondly, the appropriate size and shape of the weld groove should select as much as possible. The reasonable and scientific selection of the size and shape of the weld groove can not only ensure the load-bearing capacity of the steel structure to a certain extent, but also reduce the cross-sectional area to a certain extent, and thus control the amount of welding deformation effect;

c. Besides, in the welding process of steel structures, the position of the welding node should be as symmetrical as possible in the cross-section of the object. For the selection of the welding node of the neutral axis, the welding node should be as close as possible to the neutral axis, and at the same time, avoid being in or close to the high-stress area.

d. Finally, the choice of node forms should be as rigid as possible. At the same time, the nodes should not set at multi-directional intersections. Only in this way can the welding deformation due to the high-temperature concentration and stress concentration of the weld be avoided.

Improvement of the welding process of steel structure building

control welding distortion

The improvement of the welding structure of the steel structure plays a vital role in the development of the welding deformation. Its specific operations mainly concentrated on the following different aspects:

a. First, the welding sequence selected during the assembly and welding of the steel structure. Regarding the construction and manufacture of steel structures, relevant personnel should strictly follow the applicable regulations and requirements to operate at the standard level. Only in this way can we ensure the corresponding weight-bearing pressure to a certain extent, and then better meet the needs and standards for component assembly. In the welding process of steel structure, the welding of small welding components completed at one time, and then the appropriate welding sequence selected for construction. For some relatively large steel structure welding and assembly, the minor components welded first, and then the corresponding assembly and welding work. To prevent the deformation of the elements during construction, the selection of component models must comply with the relevant regulations and requirements. Besides, excessive forced force splicing should be avoided as much as possible during assembly. Finally, in the process of component welding and construction, the heat uniformity and temperature appropriateness of the welded joint should be maintained as much as possible to prevent welding deformation due to uneven heat.

welding sequence

b. Secondly, the corresponding anti-deformation work done. During the welding process of the steel structure, due to the shrinkage principle after cooling, an individual shrinkage reaction will occur in the weld, which reduces the original size of the component to a certain extent. For this reason, in the welding process, people often use anti-deformation to further compensate for the deformation problem caused by thermal expansion and contraction. The anti-deformation method is to artificially generate a specific deformation of the component in the early stage of the welding process. The deformation direction is opposite to the later welding deformation direction, and the degree of distortion is the same as the following deformation degree.

welding fixtures

c. Finally, we must have corresponding welding fixtures. For the welding of some more significant components, not only need to have a relevant welding platform but also to prepare corresponding welding fixtures to fix its parts better.

Back To Top