Take you into the steel structure manufacturer

At present, it is the relatively off-season in the steel structure industry, facing such a stage of relatively few steel structure engineering projects, how should various steel structure manufacturers spend the off-season? In addition to normal company operation and project construction in the off-season of each year, Xirong steel structure construction does the most is the basic knowledge training of employees and the improvement of technical expertise. Today we will tell you the basics of the steel structure market through this article.

First, the general structural form of steel structure engineering:

A. Portal light steel:

Generally used in steel structure workshops, mainly H-beam steel, accounting for 60%-70% of the steel structure engineering market, generally using hot-rolled section steel or plate for welding processing; The welding materials of this plate are about 10-25% less material than those of traditional section steel.

B. Grid frame, mesh shell:

Main materials Q345 Q235 welded pipe: accounting for about 20% of the market, mainly bolted and welded; There are also solid bolt balls and hollow welding balls connection. It is a relatively material-saving construction method, and the steel structure of this process is mainly used for large-span buildings such as stadiums and gas stations.

C. Cable membrane structure:

(1) Artistry brings you a new visual enjoyment;

(2) Economical saving of construction costs, good light transmittance, visual impact, beautifying the urban environment;

(3) Self-cleaning has a protective coating and has a good self-cleaning effect.

D. Truss structure:

Pipe trusses and pipe columns: mainly welded, suitable for buildings with small span and low load; The main materials are angle steel, I-beam, rebar, etc.

Second, the main characteristics of steel structure:

A. Low comprehensive cost cost: under normal circumstances, it is about 25-30% lower than civil construction;

B. Short construction period: generally 45-120 days can be completed, civil construction takes 6 months-more than 1 year;

C. Good seismic performance: in case of earthquakes, fires and other emergencies, there is enough time for human beings to escape;

D. High residual value of steel structure: the steel structure part can be reused, and high-strength bolts can only be used once;

E. Green environmental protection: will not cause dust, noise and water pollution, national policies encourage;

F. High effective use area.

Cons:

High temperature resistance (poor fire performance), corrosion resistance (easy corrosion); The maintenance period is short

Third, the main materials used in the steel structure:

A. According to the material (carbon steel, alloy steel).

Generally divided into A and B types (generally B type; Bridge construction mostly adopts Q345q): to ensure mechanical properties.

Q235: Ordinary steel structure building adopts;

Q345: High strength, dynamic load of more than 5T, high-rise, super high-rise buildings, high cost;

Q420: Beijing Olympic Bird's Nest, Water Cube, National Theater buildings.

B. According to the shape

Mainly using plates, others are I-beam, channel steel, angle steel, round steel, steel pipe;

Secondary steel

purlins (cold-formed thin-walled type, divided into Z type, C type, commonly used 140, 160, 180, 200);

Color steel (thickness 0.326,

0.376, 0.426, 0.476, 0.5, 0.6), etc.;

In addition, there are gutters, downspouts, etc.;

Regular steel manufacturers

include Baosteel, Tanggang, Pangang, and Wuhan Iron and Steel, and the southwest region represented by steel structure manufacturers generally uses Pangang plates.

4. Surface treatment and paint spraying:

1. The main way of surface treatment: shot blasting and sandblasting power tools to remove rust

2. Paint: alkyd anti-rust primer, red dan epoxy resin paint, epoxy zinc-rich, etc

5. Installation steps of steel structure engineering

1) Foundation embedding: anchor anchor pre-embedding construction;

2) Steel column and steel beam hoisting;

3) Support system installation;

4) Roof system: purlin, color board installation;

5) Wall system: doors and windows;

6) Fireproof coating: professional construction qualification is required.

The above is the basic knowledge of steel structure introduction, and it is also the main point that a practitioner in the steel structure industry must understand. Xirong steel structure construction will successively summarize more useful industry knowledge for your reference and understanding, and make a modest contribution to the promotion and knowledge popularization of steel structure!