Wide Span Steel Frame Building Construction Prefab Metal Storage Buildings

Product Specification

High Quality Prefabricated Steel Structure Building Wide Span Warehouse Workshop

1. Structural Safety

• Seismic Design:
  Flexible joints and energy-dissipating devices (e.g., dampers, BRBs) enhance energy absorption during earthquakes.
• Load Calculation:
  Accurately calculate dead loads, live loads, wind/snow loads, and verify compliance with local codes (e.g., GB 50009).
• Fire & Corrosion Protection:
  Apply intumescent fireproof coatings (fire resistance ≥2 hours) and hot-dip galvanizing or epoxy coatings.

2. Material Selection

• Steel Types:
  Q235/Q345 steel for main structures; cold-formed thin-walled steel for secondary components.
• Connection Materials:
  High-strength bolts (Grade 10.9) and CO₂ shielded welding ensure joint reliability.
• Auxiliary Materials:
  Rock wool (density ≥100kg/m³) or polyurethane sandwich panels (fire rating B1) for insulation.

3. Prefab Component Design

• Standardized Modules:
  Modular apartment units (e.g., 3m×6m) reduce production errors and improve assembly efficiency.
• Joint Optimization:
  Hybrid "bolt + weld" connections minimize residual stress and allow on-site adjustments.
• Transportation & Installation:
  Limit component size to transport regulations (e.g., height ≤4.5m) with pre-set lifting points.

4. Energy Efficiency

• Passive Design:
  Double-glazed Low-E windows and external insulation (U-value ≤0.4 W/(m²·K)) reduce energy use by 30%.
• Green Materials:
  Recycled steel (recovery rate ≥90%) and low-VOC paints (VOC ≤50g/L) minimize carbon footprint.
• Renewable Systems:
  Roof-integrated PV panels (efficiency ≥20%) and rainwater harvesting (capacity ≥50m³).

Detailed Explanation

1. Structural Safety

• Seismic Design:
  Use Buckling-Restrained Braces (BRBs) and flexible steel frames in high-seismic zones to dissipate energy through plastic deformation.
• Load Calculation:
  Include crane loads (e.g., 20t overhead crane) and equipment vibration loads with dynamic analysis per GB 50009-2012.
• Fire & Corrosion Protection:
  Apply thick fireproof coatings (fire resistance ≥2 hours) and hot-dip galvanizing + epoxy primer for industrial environments.

2. Material Selection

• Main Steel:
  Use Q345B steel (yield strength 345MPa) for primary structures and Q235B steel for secondary components.
• Envelope Materials:
  Polyurethane sandwich panels (thermal conductivity ≤0.022W/m·K) for walls/roof, combining insulation and fire resistance.
• Connection Materials:
  Grade 10.9 bolts and submerged arc welding ensure joint strength and airtightness.

3. Prefab Component Design

• Large-Span Optimization:
  Trusses (span≥30m) or portal frames minimize internal columns, maximizing usable space.
• Standardized Joints:
  Predefined joint catalogs (e.g., end-plate connections) reduce fabrication complexity and cut工期15%-20%.
• Transportation Segmentation:
  Components segmented per road limits (length≤12m, width≤3m), with on-site assembly error≤5mm.

4. Energy Efficiency

• Passive Design:
  Skylights (≥15% coverage) and sidewall louvers reduce lighting and ventilation energy use.
• Active Systems:
  PV systems (≥200kW·h/day) and waste heat recovery achieve 30%+ energy self-sufficiency.
• Resource Recycling:
  Recycled steel (recovery rate≥85%) and demountable foundations enable 90%+ material reuse.

5. Construction Quality Control

• Factory Prefabrication:
  CNC cutting and robotic welding ensure component precision (tolerance±2mm).
• On-Site Management:
  BIM clash detection pre-installation; total station checks column verticality (deviation≤H/1000).
• Acceptance Standards:
  Per GB 50205-2020: 100% bolt torque inspection; ≥95% welds meet Grade II+ quality.

Our Service

I. We would offer you the proposed design plan and the most valuable quotation based on the parameter of the following information.

1. Building Dimension: Length*width*height, eave height, roof type etc. 
2. Doors and windows: Dimension, quantity, position to put them if you have your own requirements. 
3. Local climate: Wind speed, snow load, earthquake etc. 
4. Insulation material for roof and wall: Sandwich panel or single metal sheet. 
5. Crane if have: Do you need crane beam inside the steel structure? And its capacity.
6. If have other requirements, such as fire proofing, isolated roof ,roof ventilation and daylighting etc, please kindly inform us. 

II. In accordance with your requirement, our experienced engineers would provide the best program.

III. We would give the best service to our client, including design, manufacturing,installation and after-sale service etc.

We can provide the service of installation, supervision, and training by extra. We will dispatch our engineers team to your country to guide the assemble work, and we will provide the detailed professional installation drawings and guide installation service team keep 24-hour online service ,they will help you to install your steel structure building .

IV. QC processing:

1. Every one week meeting for Quality Audit to solve the weakness during processing and procedures

2. Every two weeks meeting for employee training.

3. Producing as to the International Steel Structure Standard with ISO 9001 Quality Control System 

4. Each project, every 1 months, connect with clients for feedback and complaints, then improve the quality control actions. 

5. Quality inspection report for every process during production. Ensure 100% good quality products. 

FAQ

I. What kind of Industry Steel Workshop do you need?

There are very experienced, expertised engineers in our company who can design whatever shape of buildings as your request. Your building is a major investment and you take it seriously. So do we! .

II:Are you manufacturer or trade company?

We are professional manufacturer of steel structure building.

III:Do you offer guiding installation on site overseas for warehouse building? 

 Yes, we can provide the service of installation, supervision, and training by extra. We will dispatch our engineers team to your country to guide the assemble work, and we will provide the detailed professional installation drawings and guide installation service team keep 24-hour online service ,they will help you to install your steel structure building .

IV. What's the quality assurance you provided and how do you control quality? 
We have professional QC team monitoring the quality at all stages of the manufacturing process - raw materials, in-process materials, validated or tested materials, finished Goods and packing the Goods, we also accept the third party International inspection agencies to inspection the quality such as SGS,BV etc. 

V. Could you offer designing service? 

We have complete engineering team and we are using the state of the art designing and manufacturing software, Tekla, Advance Steel,Auto CAD, PKPM, MTS, 3D3S, Search etc. We are capable of designing and offering your economical solution to your needs if there is any inquiry. Please do not hesitate to contact which will be at your disposal at any time. Please note preliminary costing and design will be done at no extra cost.

IV:Is there any warranty available on the steel structure buildings?

The steel structure buildings have limited warranty. Usually,steel structure houses with long use lifespan which can reach 50 to 100 years which depending on material quality, design standards, construction quality, and subsequent maintenance.