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Structural Cold Rolled Q235B Prefabricated Metal Buildings

Name: Structural Cold Rolled Q235B Prefabricated Metal Buildings
Brand: KAFAFAB
Price: 1 USD

China Structural Cold Rolled Q235B Prefabricated Metal Buildings wholesale

Brand Name : KAFAFAB

Model Number : Steel structure

Certification : BV,SGS

Place of Origin : China

MOQ : 20T

Price : Negotiate

Supply Ability : 2000T/MONTH

Delivery Time : 6 weeks

Packaging Details : Nude pack or steel pallet

Material : Welded H beam, angle steel round bar,pipe

Paint : Alkyd primer, DFT 80UM

Structure : Gable frame

Application : warehouse frame

Grade : Q235B Q345B

Purlin : cold rolled galvanized C/Z purlin

Life time : Up to 50 years

Color : As per requirement

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Seismic prefabricated steel structure

Steel structure construction

Structural steel consists of the steel work for buildings, structures and pipe supports. Structural steel also consists of steel work for the farming of bridge connections between structures and equipment inside and outside the building. Construction of steel framed structures includes construction of its foundations, columns , beams and floors systems. Construction phases of structural steel frame are discussed.

Main parts of the steel structures and technical parameters:

Main Steel Frame System
Main structure	H section steel Q345, alkyd painting, two primary painting, two finish painting.
Roof purlin	XZ1606020*2.5, galvanized
Wall purlin	XZ1606020*2.5, galvanized
Intensive bolt	Grade 10.9
Turn buckle bolt	M20+2, steel Q235, processing
Anchor bolt	M24, steel Q235, processing
Ordinary bolt	Galvanized bolt M20
Ordinary bolt	Galvanized bolt M12
Brace nut	Galvanized bolt M12
Bracing System
Cross brace	Φ20 round steel bar Q235, process and painted (alkyd painting)
Angle brace	L50*5 angle steel Q235, process and painted (alkyd painting)
Column bracing	Φ25 round steel bar Q235, process and painted (alkyd painting)
Tie bar	Φ127*3 steel pipe Q235, process and painted (alkyd painting)
Batter brace	Φ32*2.5, Φ12 round steel bar Q235, process and painted (alkyd painting)
Wall & Roof System
Roof panel	Corrugated steel plate or sandwich panel (EPS/fiber glass/rock wool/PU)
Wall panel	Corrugated steel plate or sandwich panel (EPS/fiber glass/rock wool/PU)
Edge cover	0.4mm color plate, angle Alu.
Fittings & accessories	Nails, glue etc.
Unpowered ventilator	Diameter Φ600, stainless steel
Sky lighting band	1.2mm FRP, double layer
Sliding door	sandwich panel door
Roof drainage system
Gutter	0.5mm color steel plate
Rainspout pipes	Φ110 PVC pipe

The construction procedure of steel frame structure is as follows:

Steel frame structure foundation construction

Steel column structure

Erect steel beams

Floor system used in construction of steel frame structure

Structural Cold Rolled Q235B Prefabricated Metal Buildings

Steel frame

Steel frame structure foundation construction

The construction of the steel frame structure begins with the construction of its foundation. Generally, the type of foundation required for a given structure is based on the bearing capacity of the soil.

Soil surveys including ground and underground exploration are used to assess the condition of the soil where the steel frame structure is located.

For example, when applying medium or low loads, it is recommended to use reinforced concrete bearing pads or strip foundations. These foundation types transfer loads to the soil that can support the transferred loads.

Reinforced concrete pressure pad foundation for steel frame structure

If the soil strength is poor and the applied load is large, it is recommended to consider a pile foundation. The pile foundation transfers the load of the structure to the hard soil.

Steel Column Construction

The next step of steel frame construction is the placement of steel columns. The section of the steel is specified based on the load imposed.

There are various sizes of steel column section to choose and these steel columns are commonly produced in advance.

The most significant point in column installation is the connection between foundation and column and splices between columns.

Regarding foundation to column joints, base plates are welded to the end of columns. The most desired shape of base plate is square and rectangular shape. Typical details of column to foundation connection are shown in Figure-6.

It should be known that, the most desired shape of base plate is rectangular and square shape because such plates provide largest spacing between the bolts which is desirable.

Erection of steel beams

Various precast beam sections can be used for building multi-story steel frame structures. Beams usually transfer loads from the floor and roof to the columns.

The maximum span of steel beam members is 18m, but the most common steel beam span ranges from 3m to 9m.

When erecting steel beams, you will encounter column-to-beam connections and beam-to-beam connections. The type of column-to-beam connection is different, which is selected according to the type of load applied to the column-to-beam connection.

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