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Q345b EPS Roof Structural Steel Prefabrication Workshop

China Qingdao KaFa Fabrication Co., Ltd. certification
China Qingdao KaFa Fabrication Co., Ltd. certification
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KAFA is a professional steel fabricator,The quality could match Aus standard. Good service.

—— Jonathon Dunlop

KAFA's engineer team is very great. Economical design and cost-effective plan helps us save much money. Thank you KAFA team!

—— Stephane

We cooperated with KAFA for more than 4 years, Good price, high quality, and most important is the on time delivery time. Especially the shop drawings drafting service, They can use Chinese material instead of Australian material properly.

—— James

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Q345b EPS Roof Structural Steel Prefabrication Workshop

Q345b EPS Roof Structural Steel Prefabrication Workshop
Q345b EPS Roof Structural Steel Prefabrication Workshop Q345b EPS Roof Structural Steel Prefabrication Workshop

Large Image :  Q345b EPS Roof Structural Steel Prefabrication Workshop

Product Details:
Place of Origin: Qingdao, China
Brand Name: KAFA
Certification: ISO 9001
Model Number: Steel workshop-014
Payment & Shipping Terms:
Minimum Order Quantity: 1000 square meter
Price: Negotiate
Packaging Details: Nude pack
Delivery Time: 30-45days
Payment Terms: L/C, T/T, Western Union
Supply Ability: 20000 square meter/month

Q345b EPS Roof Structural Steel Prefabrication Workshop

Size: As Per Requirement Main Material: Q345b,Q235b
Wall: EPS, Glass Wool, Rock Wool, PU Sandwich Panel Or Single Sheet Roof: EPS, Glass Wool, Rock Wool, PU Sandwich Panel Or Single Sheet
Door: PVC Aluminum Sliding /roller Door. Color: As Your Request
Windows: PVC Aluminum Windows Frame: Weld Steel Structure Frame
Usage: Warehouse,workshop Life Time: 50 Years
High Light:

Structural Steel Prefabrication Workshop


EPS Roof Prefabrication Workshop


Q345b Steel Structure Workshop

Hot-dip galvanized waterproof steel structure workshop

Light steel structure workshop design


The light steel structure workshop can be designed and built into any size and shape to meet your specific needs. The following are some options for your light steel structure workshop design.
Steel columns and beams constitute the main structure of a steel structure building, and Q345B H-shaped steel will be used. The overhead crane beam also uses Q345B H-shaped steel. The painting will be divided into three layers.
Wall and roof purlins are available in C, Z, U shape. Angle steel will be used for the roof horizontal support system. For pilasters and cross bracing systems, double-layer angles will be used. The colors of the walls and roof are customized according to your requirements. There are two types of panels. One is single-sided brick or steel tile, and the other is composite board, such as polystyrene, rock wool and polyurethane. The foam is placed between two layers of panels, warm in winter and cool in summer. It also has sound insulation.

Features of steel structure workshop


1. High material strength and light weight


2. Steel toughness, good plasticity, uniform material, high structural reliability


3. High degree of mechanization of steel structure manufacturing and installation


4. Good sealing performance of steel structure


5. Steel structure is heat-resistant and not fire-resistant


6. Poor corrosion resistance of steel structure


7. Low carbon, energy saving, green and environmental protection, reusable

Q345b EPS Roof Structural Steel Prefabrication Workshop 0


When designing a steel structure workshop, some factors should be considered for the best design. The costs include but are not limited to:


Anti-seepage: Prevent rainwater from seeping into the metal roof from the outside. Usually, rainwater enters the metal roof through overlapping seams or nodes. In order to achieve the anti-seepage function, a sealing washer should be used in the screw port, and then it should be hidden and fixed. Where the panels overlap, a sealant or welding treatment should be applied to eliminate overlap.


Fire protection: In case of fire, it must be ensured that the metal roof material will not burn and the flame will not penetrate the metal roof.


Windproof: Considering the maximum local wind pressure, the design of the steel structure workshop should ensure that the metal roof will not be pulled apart due to negative wind pressure.


Sound insulation: prevent sound from spreading to the room or from the room to the outside. Generally, insulating material will be filled between the layers of the metal roof panel. The sound insulation effect is highly related to the density and thickness of the sound insulation material.


Ventilation: Considering indoor and outdoor air circulation, ventilation openings should be provided on the roof structure of the building.


Moisture proof: Prevent water vapor from condensing on the top metal layer. The solution is to fill the roof slab with insulation cotton and paste the waterproof membrane on the roof slab.


Load-bearing: The steel structure shed workshop should have a large load-bearing capacity, can withstand heavy rain and heavy snow, and withstand the load of construction and maintenance.


Lightning protection: Prevent lightning from penetrating the metal roof and entering the room.


Lighting: Skylights can be used to improve indoor lighting during the day. It can be a lighting panel or glass.


Control thermal expansion and contraction: Taking into account certain areas with large temperature differences, it is necessary to ensure that the metal top plate will not be damaged by the stress caused by thermal expansion and contraction.



1. Prefabricated: Fast and easy installation, save time and labor;
2. Customized design: different size, various layout, shape and appearance;
3. Light weight: lighter than concrete;
4. Removable
5. Environmental Friendly: recyclable, no waste produced;
6. High strength: can resistance grade 8 earthquake, water proof, fire proof, can resist strong wind and heavy snow.
7. Long life span: more than 50 years.
8. Wide span: single or multiple spans, maximum span 60m without middle columns.

Q345b EPS Roof Structural Steel Prefabrication Workshop 1

Technical Parameters

Main Components Base Concrete and steel foundation anchor bolts
Main frame Hot Rolled or Welded H-Section Steel
Material Q235B, Q345B or others as per client's requests
Purlin C/Z purlin: Size from C120~C320, Z100~Z320
Bracing X-type or other type, angle or round pipe
Bolt Plain or High-strength bolt
Roof & wall EPS / Rockwool / PU Sandwich panel or colored steel sheet
Door Electric flat door
Window Aluminum or PVC window
Surface Coating Anti-rust Paint or Hot Dip Galvanize
Sheet 0.3-0.8mm galvanized or color coated steel sheet
Accessories Translucent skylight sheet, Ventilators, etc.
PVC Down pipe, Galvanized / SS304 gutter, etc.
Usages 1. Workshop, warehouse, plant, storage
2. Steel web frame structure
3. High rise building project
4. Others steel structure buildings
Packing Main steel frame without packing load in 40' OT or 40'HQ
Roof and wall panel load in 40' HQ
Drawing By client or RPIC
Design Parameters If need design from Honkae, please supply following parameters:
1) Length, width, eave height, roof apex
2) Live Load, Wind Speed, Seismic Load, Snow Load etc.
4) Quantity and sizes for doors and windows
5) Other information if necessary
Production Process

1. Preparing Material⇒2. Cutting⇒3. Assembling⇒4. Automatic submerged arc welding⇒

5. Flange plate of straightening⇒6. Welding⇒7. Assembly dimensions inspecting⇒

8. nondestructive testing⇒9. shot blasting and descaling⇒10. Spray paint processing⇒

11. Measurement of coating thickness⇒12. Packaging⇒13. Delivery⇒Other: Secondary processing

Contact Details
Qingdao KaFa Fabrication Co., Ltd.

Contact Person: Alice Lee

Tel: 0086 13969825647

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