Where to find the steel structure production and installation? What documents do you need to do stee

Generally speaking, most of the enterprises with "construction installation" in the name or business scope have the ability to install and construct steel structures.

Steel structure is a structure that is mainly composed of steel materials and is one of the main types of building structures. The structure is mainly composed of steel beams, steel columns, steel trusses and other components made of section steel and steel plates, etc., and the components or components are usually connected by welds, bolts or rivets.

Because the main construction means of steel structure is welded or rivet connection. Therefore, the relevant use enterprises will also be named "riveting and welding". Such as the riveting and welding engineering team of Jian'an Company.

Now there are a lot of steel structures, some are manufacturers, and some are indeed leather bag companies, so when choosing, we must find a strong one. The quality of the project and the after-sales service are guaranteed. Hope mine can help you!!

If you are looking for a steel structure engineering business, you must go to a professional steel structure engineering business. Pay attention to the steel treasure **, and the steel structure treasure app on the mobile phone. Professional steel structure engineering information**, a platform for the steel structure industry chain.

Summary. Hello, the following documents are required to do steel structure installation projects: 1

Certificate of safety production training for steel structure installation operators; 2.Aerial work operation certificate; 3.Practitioner's health certificate; 4.

Employment contracts or labor dispatch agreements.

Can the construction labor company do the installation of steel structure installation works?

Hello, the following documents are required to do the steel structure closed group installation project: Cover orange 1Certificate of safety production training for steel structure return installation operators; 2.

Aerial work operation certificate; 3.Practitioner's health certificate; 4.Employment contracts or labor dispatch agreements.

Need to be familiar with the standards and specifications for steel structure installation; 3.Have a good sense of security and responsibility; 4.Understand and master the safe operation process of steel structure installation; 5.

Have a high degree of coordination skills and team spirit; 6.It is necessary to continue to learn and improve the level of self-disordered and slow skills. Therefore, it is necessary to have certain qualifications and conditions to do steel structure installation projects, and at the same time, it is also necessary to continuously improve their own skill level to ensure the safety and quality of the project.

Hello <>

The construction labor company can do the installation of steel structure installation works.

Do you need qualifications to only do installation?

Kiss, don't need it.

Summary. 1. Do SEO promotion and get a good ranking. There may be customers who reach out to you.

2. Take the initiative to find some steel structure engineering information platforms, such as steel structure treasure. Nowadays, those who do engineering work through this kind of platform. If you are looking for steel structure engineering, it is recommended to use steel structure treasure. For the whole industrial chain of steel structure, there is a lot of project information.

3. Find steel structure engineering projects through other channels such as communities.

How to find steel structure engineering online?

Hello dear, it is my honor to answer your questions, it will take a little time to sort out the answers, please be patient

1. Do SEO promotion and get a good ranking. But there will be customers who will take the initiative to contact you. 2. Take the initiative to find some steel structure engineering information platforms, such as steel structure treasure.

Nowadays, those who do engineering work through this kind of platform. If you are looking for steel structure engineering, it is recommended to use steel structure treasure. For the whole industrial chain of steel structure, there is a lot of information about the project.

3. Find steel structure engineering projects through other communities and other channels.

I'm doing crane rental, which platform will be better.

At present, the platform has not been released online.

The production and installation of steel structure is about 1500 to 2000 yuan.

The cost of steel structure production and installation is about 1500 to 2000 yuan. This cost increases with the difficulty of fabrication and the complexity of the components at the time of installation. Generally, the total cost of production and installation will not exceed 2,000 yuan.

The advantages of a steel knot ambush section structure house are as follows:

1. Convenient construction.

When building a steel structure house, the main materials used are steel structures and some small components made of metal. Therefore, the overall installation speed is fast, and the construction pressure of the workers is small, which greatly shortens the construction time.

2. Good waterproofing.

The main body of the steel structure house is steel, and its surface has a layer of paint, which can play a good role in waterproofing.

3. Good seismic resistance.

The main load-bearing components of the steel structure house are steel, which has good toughness and elasticity, and the stability of the overall structure is strong.

4. Good environmental protection.

The steel structure house is made of steel plates, enclosure plates, etc., which can be disassembled at any time, which is very convenient. Moreover, the Zen trail can be reused and has a high degree of flexibility, which effectively reduces the waste of resources and protects the natural environment. <>

<> steel structure production and installation process is very important, the process is formulated to better reduce the waste of time, and the processing of every detail is very critical. Zhongda Consulting will explain to you the steel structure production and installation process.

1) Production: The production of steel structure includes lofting, numbering, cutting, correction and many other links. The anti-slip coefficient of the friction surface after high-strength bolt treatment should meet the design requirements.

After passing the production quality inspection, rust removal and painting are carried out. Generally, 30 50mm is left at the weld of the installation seam, and it is not painted temporarily.

2) Welding: Welders must pass the examination and obtain a certificate, and must weld within the scope of their examination and their accreditation. After welding, the welder's steel seal must be marked on the weld and part specified in the process.

The welding material should be matched with the base metal, and the welding should be fully penetrated.

The first and second level welds should be inspected by ultrasonic flaw detection for internal defects, and when ultrasonic flaw detection cannot make a judgment on the defects, radiographic flaw detection should be used.

The steel, welding materials, welding methods, etc. used by the construction unit for the first time shall be evaluated for welding process.

3) Transportation: When transporting steel components, vehicles should be selected according to the length and weight of steel components. The fulcrum of the steel component on the vehicle, the length of the two ends and the binding method should ensure that the component does not produce deformation and does not damage the coating.

4) Installation: The installation of the steel structure should be carried out according to the design of the construction group, and the installation procedure must ensure the stability of the structure and not lead to permanent deformation. When installing the column, the positioning axis of each column must be directly led from the ground control axis.

After the columns, beams, roof trusses and other main components of the steel structure are installed in place, they must be corrected and fixed immediately. The friction surface of the component treated by the factory must be re-checked before installation, and the anti-slip coefficient can only be installed after it is qualified.

5) Fire and rust prevention

1) The fire performance of the steel structure is poor. When the temperature reaches 550, the yield strength of the steel is approximately reduced to the yield strength at the normal temperature, and the structure reaches its strength design value and may be damaged.

The design should be in accordance with the provisions of the relevant fire codes, so that the building structure can meet the requirements of the corresponding fire protection standards. Within the time required by the fire protection standard, the temperature of the steel structure should not exceed the critical temperature to ensure the normal bearing capacity of the structure.

2) Exposed steel structures may be severely corroded by the atmosphere, especially the polluted atmosphere, and the most common is rust. Therefore, it is necessary to carry out anti-corrosion treatment on the surface of the component to ensure the normal use of the steel structure. The method of anti-corrosion treatment is determined according to the surface condition and service life requirements of the component.

1. What is the steel structure installation process?

1. Before installation, look at the steel structure installation flow chart.

2. Reasonably distinguish the construction section.

3. Determine the steel structure installation procedure.

4. Before hoisting the crane, the steel structure should be assembled and then hoisted in place.

5. Install the flow section, according to the shape of the steel structure repair plane.

6. The installation components are installed vertically from bottom to top.

7. After each floor is installed, immediately install the stairs and profiled steel plates.

Second, the key points of steel structure installation

1. Friction coefficient.

It is specially designed to measure the initial sliding force in the anti-slip test, where nf is the number of friction surfaces and is the sum of the measured values of a high-strength bolt tightening preload corresponding to f.

2. Torque coefficient.

where d is the nominal diameter (mm) of the strength bolt, and m is the given torque value (, then p is the bolt preload. However, for the connection of hexagonal bolts with high strength, the average torque coefficient of k must be reached, and the standard deviation must be less than or equal to.

3. Initial twisting torque.

In order to reduce the effect of deformation of the steel plate caused by the bolting process, we can use secondary tightening to reduce the effect between the bolts. The initial tightening of high-strength bolts is the initial tightening, but the axial force should reach 60% to 80% of the standard axial force.

4. The final twist torsion is torsional and the Huai torsion moment.

The tightening torque of high-strength bolts is the final tightening torque, and the loss of various stress bands must be taken into account, and the torque is usually calculated according to the pre-tension calculation of 5% to 10% higher.

What are the installation steps of steel structure engineering? What do I need to pay attention to during the installation process? The following is an introduction to the main content of the installation steps of steel structure engineering brought by Zhongda Consulting for reference.

Column installation: In order to eliminate the influence of the error in the manufacture of the length of the column on the elevation of the column, before hoisting, the section of the theoretical elevation is 1m downward from the plane of the corbel, and the obvious mark is marked as the benchmark for adjusting the elevation of the column. On the upper surface of the column bottom plate, mark the cross line of the vertical and horizontal axis through the center of the column, which is used as the reference for the installation and positioning of the column.

When installing, the column coincides with the cross line on the foundation, first use the level to correct the elevation of the column with the mark at the theoretical elevation of the column, and then use the cushion block to solidify, and tighten the anchor screw. Then use two theodolite to correct the verticality of the column from the direction of the two axes, and use double nuts to tighten the bolts after reaching the requirements. For a single column with unstable structure, temporary protection measures can be taken with the help of air cables.

For columns designed with inter-column supports, inter-column supports can be installed to enhance structural stability.

Crane girder installation: Before the crane girder is installed, it should be inspected, and it can be installed when the deformation does not exceed the limit. After the crane beam monolithic hoisting is in place, it should be bolted with the corbel in time, and the connecting plate between the upper edge of the beam and the column should be connected, and the bolt should be tightened after meeting the requirements with a level and Jingweiyi.

Roof beam installation: The roof beam should be inspected before the ground assembly, when the component deformation does not exceed the limit, the friction surface of the high-strength bolt connection has no debris such as sediment and confirms that the friction surface is smooth and dry, it can be assembled on the ground. During assembly, oil-free sleepers are used to cushion the components, and the two sides of the components are supported by wooden bars to enhance stability.

The assembly of the roof beam is taken between the two columns as a unit, and the unit should be inspected after splicing: the straightness of the beam; The spacing size of the bolt holes that are connected to other survey components, such as columns. After the adjustment inspection meets the requirements, tighten the high-strength bolts.

Accessory installation: The installation of roof purlins and wall purlins is carried out at the same time. Before the purlin is installed, check the deformation of the component, and if there is an excess, it will be treated to remove the oil, sediment, etc. on the surface of the component.

Several purlins are hoisted together as a group, and the slope of the purlins is checked after the installation of one span. The straightness of the purlin is required to be controlled within the allowable deviation range, otherwise it is adjusted by using connecting bolts (adding cushion blocks if necessary).

Re-inspection and adjustment, welding and repair: After the hoisting is completed, all components are re-inspected and adjusted, and after the design requirements are met, on-site welding is carried out to repair the damaged parts of the paint. Tong chain.