Concrete Column Construction Building Steel Metal Roof Structure
Product Overview
Pre-engineered structural steel industrial real estate building construction featuring high-strength, lightweight design with comprehensive quality control and 30-year limited warranty.
Basic Specifications
Construction Period
60 Days
Warranty
30 Year Limited Warranty
Production Capacity
5000 ton/Month
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.
Applications
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 Applications
- Factories
- Workshops
- Warehouses
- Cold Storages
- Steel Mills
- Assembly Plants
Commercial Applications
- Showrooms
- Supermarkets
- Offices
- Shopping Centers
- Exhibition Halls
- Restaurants
- Logistic Centers
- Multi-purpose Buildings
Public & Other Applications
- Schools
- Hospitals
- Conference Halls
- Laboratories
- Museums
- Stadiums
- Farms
- Utility Shelters
- Pump Stations
- Aircraft Hangars
- Airport Terminals
Key Advantages
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.
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.
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.
Energy Efficiency
Nowadays, pre-engineered buildings are the green solution for the environment with CO2 reduction, energy efficiency, and recyclability.
Building Components
Pre-engineered metal buildings consist of following components:
- 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).
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.
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
Material Receiving Procedure
- Verify receiving documents and quantity of received material
- Submit load for QC inspection
- Visual inspection to confirm surface condition and damages
- Dimensional inspection checking length, width, depth, thickness
- Verify supporting documents like MTC
- Prepare Incoming Material Inspection Report
Material Preparation
Design and Development department creates project drawings. Production department prepares items as per drawings:
Preparation of Plates
- Drawings transferred to storage device using expert software
- Drawings copied into plate processing machine
- Automated machine senses plate length and processes according to NC files
- Punching of part mark on plate
- 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 processes components
- Job transferred to fit-up section after completion
Fit-up Process
- Fabrication drawings issued by production engineer
- Prepared beams and connection items collected for fit-up
- End plates, gusset plates, stiffeners, purlin cleats fixed by tack welding
- QC inspection after fit-up completion
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 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 after welding
- Grind off burrs, sharp edges and excessive reinforcements
- QC inspection after completion
Blasting Process
- Tool Box Talk performed before work commencement
- Record ID of fabricated steel for traceability
- Clean material with high pressure air
- Automated blasting using six internally mounted wheels
- Steel emerges fully cleaned (Grade - SA 2/2.5)
- Full PPE required for personnel
Painting Process
- QC inspection of blasted surfaces before priming
- Check ambient conditions: temperature 5-40°C, substrate temperature 23-40°C, relative humidity 50-85%
- Apply paint using Airless spray method
- Check paint material for shelf life, temperature and batch number
- Monitor wet film thickness during application
Loading and Shipping
- Receive finished components from painting department
- Store components properly job-wise in yard
- Arrange trucks from contract signed companies
- Begin loading after confirmation of all details
- 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 and follow related standards including:
- GB/T1591-2008/2018
- GB/T11263-2010
- GB/T 2518-2008
- GB/T12754-2006
- GB/T 1228-2006
Fillet Weld Size Standards
To ensure quality of fillet weld meeting technical requirements and improve fabrication standardization:
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 should be same with member thickness
- Fillet weld size without groove should not exceed 17mm
| Form of Fillet Weld Leg |
K (Fillet Weld Size) Value |
Note |
| Fillet weld without groove |
K=(0.7~1)t and ≤15mm |
For most steel structure buildings |
| Fillet weld without groove |
K=(0.5~0.6)t |
For strengthening ribs and secondary members |
| Fillet weld with groove (CJP and PJP) |
K=t/4 and K≤10mm |
For most steel structure buildings |
| Fillet weld with groove (CJP and PJP) |
K=t/2 and K≤10mm |
Important members (crane beams or similar) |
| Parent Metal Thickness (t) (mm) |
Minimum Fillet Weld Size |
| t≤6 |
3 (minimum 5 for crane beam) |
| 6 |
5 |
| 12 |
6 |
| t>20 |
8 |
H Section Manufacturing Process
Steel plate cutting → H section assembly → Automatic welding → H section strengthening → Assembly → Manual welding → Shot blasting → Painting → Storage
Manufacturing Equipment
| Equipment Name |
Model No. |
Application Feature |
| Portable CNC Fire-cutting machine |
CNCDG-1530 |
Steel plate cutting (5-100mm), beveling of edge |
| Straight flame cutting machine |
DZCG-4000A |
Steel plate cutting (5-100mm), Y flange plate, web plate cutting |
| CNC cutting machine |
CNC-4000C |
Steel plate cutting (5-100mm), irregular component cutting |
| Radial drilling machine |
Z3050*16/1 |
Maximum drilling diameter φ50mm, bolt-connection holes |
| Puncher machine |
JH21-400 |
Maximum stamping pressure 400 ton, plate punching |
| Shearing machine |
Q11Y-25*2500 |
Cutting width 2500mm, thickness 3-25mm |
| H section steel assembly machine |
Z20B |
H type assembly, flange width 150-800mm, web height 160-2000mm |
| Gantry-type submerged arc automatic welding machine |
LHA5ZB |
Assembly welding of H section steel up to 800mm×2000mm |
| H section steel strengthening machine |
YTJ60B |
Correcting deformation of I beam or H section steel |
| 10-ramming heads shot blasting machine |
QH1525 |
Shot blasting of section steels, up to Sa2.5 Grade |
| Airless sprayer |
CPQ9CA |
Surface paint of structural members, pressure ratio: 32:1 |
