Prefab Steel Structure Building Industrial Commercial Metal Workshop Warehouse Shed Hangar
Product Specifications
| Model NO. |
KXD-SSB54 |
| Color Reference |
Ral |
| Member of Engineering Team |
20 |
| Quality Control |
Daily |
| Life Cycle |
50 Years |
| Construction Period |
60 Days |
| Customer Service |
Aftersale Service |
| Project Management |
Turnkey Solution |
| Engineering Tools |
Autocad |
| Type |
H-Section Steel |
| Standard |
GB |
| Forming |
Hot-Rolled Steel |
| Carbon Structural Steel |
Q235 |
| Residential Wall Structure |
Wall Support |
| Warranty |
30 Year Limited Warranty |
| Transport Package |
Seaworthy Package |
| Specification |
SGS / ISO/ BV |
| Trademark |
KXD, Low-alloy High-tensile Structural Steel |
| Origin |
China |
| HS Code |
9406900090 |
| Production Capacity |
5000ton/Month |
Pre-engineered Structural Steel Industrial Building Construction
What is Pre-engineered Steel Building?
Pre-engineered steel buildings are steel structures built over a structural concept of primary members, secondary members, roof and wall sheeting connected to each other and various other building components.
These buildings can be provided with different structural and non-structural additions such as skylights, wall lights, turbo vents, ridge ventilators, louvers, roof monitors, doors & windows, trusses, mezzanine floors, fascias, canopies, crane systems, insulation etc., based on customer requirements. All steel buildings are custom designed to be lighter in weight and high in strength.
Pre-engineered Steel Building Models
Applications of Pre-engineered Steel Buildings
Pre-Engineered Buildings are the most flexible solutions for contractors and owners. With advantages of low cost, high durability, perfect quality control and fast erection; PEBs are used for various applications.
Industrial: Factories, Workshop, Warehouses, Cold Storages, Steel Mills, Assembly Plant
Commercial: Showrooms, Supermarkets, Offices, Shopping Centers, Exhibition Halls, Restaurants, Logistic Centers, Multi-purpose Buildings
Public: Schools, Hospitals, Conference Halls, Laboratories, Museums, Stadiums
Others: Farms, Utility Shelters, Pump Stations, Aircraft Hangars, Airport Terminals
Why Choose Pre-engineered Steel Buildings?
1. Cost Savings
Price per square meter can be 25%-30% lower than conventional steel buildings. Site erection cost is low because of faster erection times and easier erection process.
2. Quick Erection
All steel components are fabricated at the factory and linked by bolts at the site. So the erection process is fast, step by step, easy to install and requires simple equipment. 60% less construction time required compared with traditional R.C.C (reinforced concrete) building.
3. Flexibility
Pre-engineered steel buildings are flexible in any requirement of design, easy to expand in the future and also economically with low transportation costs.
4. Energy Efficiency
Nowadays, pre-engineered buildings are the green solution for the environment with CO2 reduction, energy efficiency, and recyclability.
Components of Pre-engineered Steel Building
- Primary Members / Main Frames
- Secondary Members / Cold Formed Members
- Roof & Wall Panels
- Accessories, Buyouts, Crane System, Mezzanine System, Insulation, etc.
- Sandwich Panels
Primary Members / Main Frames
Primary members are the main load carrying and support members of a pre-engineered building. The main frame members include columns, rafters and other supporting members. The shape and size of these members vary based on the application and requirements.
Secondary Members / Cold Formed Members
Secondary structural framing refers to purlins, girts, eave struts, wind bracing, flange bracing, base angles, clips and other miscellaneous structural parts. Purlins, girts and eave struts are cold formed steel members which have a minimum yield strength of 345 MPa (50,000 psi) and will conform to the physical specifications of GB/ISO/CE or equivalent.
Roof & Wall Sheets/Panels
Standard steel panels are 0.3, 0.4, 0.5 mm or 0.6 mm thick and have a minimum yield strength of 345 MPa. Steel panels are hot dipped and galvanized with zinc or zinc-aluminium coating. The base material is pretreated, before applying a corrosion resistant primer and top coat. The combined thickness of the painted film is 25 microns on the front side and 12 microns on the reverse side.
Other Building Accessories
Other building accessories include anchor bolts, fasteners (bolts, nuts, turnbuckle, expansion bolts), gutters, downspouts, doors, windows, ventilators, skylight panels, louvers and all other building-related materials.
Manufacturing Process and Quality Control
A: Material Receiving Procedure
- Verify receiving documents and quantity of received material
- Submit load for QC inspection
- Visual inspection for surface condition and damages
- Dimensional inspection for all dimensions
- Verification of supporting documents like MTC
- Preparation of Incoming Material Inspection Report
B: Preparation of Material
Preparation of Plates:
- Design department creates structural drawings
- Drawings transferred to plate processing machine
- Automated plate processing according to NC files
- Punching of part mark on plates
- Drilling of plates as per NC files
- Plasma cutting of plates
Preparation of Beams/Tubes:
- Fabrication drawings prepared by design department
- Automated cutting and drilling machine processing
- Transfer to fit-up section after completion
C: Fit-up Process
- Fabrication drawings issued to production supervisor
- Fabricators collect prepared beams and connection details
- Fix end plates, gusset plates, stiffeners, purlin cleats, stay angle cleats
- Tack welding in appropriate places
- QC inspection after fit-up completion
D: Welding & Grinding
Submerged Arc Welding Procedure:
- Plan jobs to be welded
- Clean welding locations free of dust, oil, grease
- Set wire feed and voltage for welding
- Maintain fillet size parameters per GB50661-2011 standard
- Remove spatters and slag completely after welding
- Grind off burrs, sharp edges and excessive reinforcements
- QC inspection after completion
MIG Welding Procedure:
- Plan jobs to be welded
- Clean welding locations free of dust, oil, grease
- Set wire feed and voltage for welding
- Maintain fillet size parameters per GB50661-2011 standard
- Remove spatters and slag completely after welding
- Grind off burrs, sharp edges and excessive reinforcements
- QC inspection after completion
E: Blasting Process
- Tool Box Talk performed for every task
- Working area barricaded with information notices
- Record ID of fabricated steel for traceability
- Clean material with high pressure air
- Automated blasting through conveyor system
- Six internally mounted wheels for high-velocity blasting
- Full PPE required for personnel
F: Painting of Fabricated Material
- QC inspection of blasted surfaces
- Ambient conditions checked before application
- Surface temperature at least 3˚C above dew point
- Relative humidity 85% or below
- Application by Airless spray method
- Wet Film Thickness (WFT) monitoring
- Paint system: Primer coat, Second coat, Third coat per project requirements
G: Loading and Shipping
- Receive finished components from painting department
- Store components properly job-wise in yard
- Arrange trucks from contract signed companies
- Start loading after clearance confirmation
- Maintain copies of all documents in job file
Quality Standards & Control
With 20 year warranty in the steel building industry, our company maintains strict quality standards. We have acquired ISO9001 and CE certificates. Following are the related standards we strictly follow for design and fabrication:
- GB/T1591-2008/2018
- GB/T11263-2010
- GB/T 2518-2008
- GB/T12754-2006
- GB/T 1228-2006
Fillet Weld Size Quality Control
Purpose: To ensure the quality of fillet weld, meeting technical requirements of welded members and improve standardization of fabrication.
Application Scope: Applying for design, fabrication and inspection of fillet weld size.
Fillet Weld Leg Size Requirements:
- All fillet weld size should not be less than drawing and design values
- Minimum fillet weld size K≥1.5×t (t = thickness of thicker welding member)
- Maximum fillet weld size K≤1.2t (t = thickness of thinner welding members)
- When t≤4mm, minimum fillet weld size same with member thickness
- For fillet weld without groove, should not be more than 17mm
H Section Manufacturing Equipment and Process
Steel plate cutting → H section assembly → Automatic welding → H section strengthening → Assembly → Manual welding → Shot blasting → Painting → Storage
Manufacturing Equipment
Portable CNC Fire-cutting machine (CNCDG-1530)
Application: Steel plate cutting (5-100mm thickness), beveling of edge. Advantageous in small equipment and easy-to-move.
Straight flame cutting machine (DZCG-4000A)
Application: Steel plate cutting (5-100mm thickness), Y flange plate, web plate cutting, effective cutting width: 3200mm.
CNC cutting machine (CNC-4000C)
Application: Steel plate cutting (5-100mm thickness), Y flange plate, web plate and irregular component cutting, effective cutting width: 3200mm.
Radial drilling machine (Z3050*16/1)
Application: Maximum drilling diameter φ50mm, mainly for processing of component bolt-connection holes.
Puncher machine (JH21-400)
Application: Maximum stamping pressure-400 ton, mainly for plate punching, blanking, bending and shallow stretching.
Shearing machine (Q11Y-25*2500)
Application: Cutting width 2500mm and cutting thickness 3-25mm.
H section steel assembly machine (Z20B)
Application: Mainly for H type assembly, flange width 150-800mm, web height 160-2000 mm.
Gantry-type submerged arc automatic welding machine (LHA5ZB)
Application: Mainly for assembly welding of H section steel whose maximum cross section up to 800mm×2000mm.
H section steel strengthening machine (YTJ60B)
Application: Correcting deformation of I beam or H section steel flange plate during welding process.
10-ramming heads shot blasting machine (QH1525)
Application: Shot blasting of section steels including H section steel, welded members and steel plate.
Airless sprayer (CPQ9CA)
Application: Derived capacity:56 L/min, mainly for surface paint of structural members.
