Guangdong LiYou Steel Structure Engineering Co., Ltd.        +8619147784007     liyousteelstructure@outlook.com
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Structural Steel Fireproofing

 

Q: How long does fireproofing last?
A: 15-25 years (SFRM), 20-30 years (intumescent) with proper maintenance.

Q: Can fireproofing be applied outdoors?
A: Yes - Requires weather-resistant topcoat (we recommend polyurethane).

Q: What's the lightest fireproof solution?
A: Thin-film intumescent (1-2mm) for 60-90 minute ratings.

 

Availability:
Quantity:
  • Online technical support, Onsite Installation, Onsite Training, Onsite Inspection, Free spare parts, Return and Replacement, Other

  • graphic design, 3D model design, total solution for projects, Cross Categories Consolidation, Others

  • garage shed, storage closet, poultry houses, Hotel, Villa, Apartment, Office Building, Hospital, School, Mall, Sports Venues, Leisure Facilities, supermarket, Warehouse, Workshop, Park, Farmhouse, Courtyard, Other, Kitchen, Bathroom, Home Office, Living Room, Bedroom, Dining, Babies and kids, Outdoor, Storage & Closet, Exterior, Wine Cellar, Entry, Hall, Home Bar, Staircase, Basement, Garage & Shed, Gym, Laundry

  • steel

  • Guangdong, China

  • Modern

  • Lifetime

  • Liyou

  • LYB-001

  • CE Certification

  • Industrial Commercial

  • C.Z Shape Steel Channel

  • Sliding Door

  • Customized Color

  • Sandwich Panel Optional

  • Aluminum Alloy Sliding Window

  • SAP2000/AutoCAD /PKPM /3D3S/TEKLA

  • Hot Dip Galvanized

  • 25-60 days

Structural Steel Fireproofing: Comprehensive Protection Guide

1. Fireproofing Methods Comparison

Method Thickness Fire Rating Cost/m² Best For
Spray-Applied (SFRM) 15-50mm 30-240 mins $25-60 Industrial, high-rise
Intumescent Paint 0.5-5mm 30-120 mins $40-100 Architectural, visible steel
Concrete Encasement 50-150mm 60-240 mins $80-150 Nuclear plants, extreme fire risk
Board Systems 25-75mm 60-180 mins $50-120 Data centers, clean rooms
Fireproof Cladding 10-30mm 30-90 mins $70-130 Offshore platforms

2. Critical Technical Standards

A. Performance Requirements:

  • ISO 834 (Standard fire curve)

  • ASTM E119 (Fire resistance tests)

  • EN 13381-4 (Sprayed coatings)

  • GB 14907 (Chinese fireproof coatings)

B. Temperature Thresholds:

  • Critical steel temp: 550°C (ASTM E119)

  • Intumescent activation: 120-250°C

  • SFRM protection limit: 1,000°C

3. Application Specifications

Spray-Applied Fireproofing (Most Common):

  • Density: 250-400 kg/m³

  • Adhesion strength: ≥0.15 MPa

  • Curing time: 24-72 hours

  • Coverage rate: 1.5-3.0 m²/kg @ 25mm

Intumescent Coatings (Aesthetic Solution):

  • Dry film thickness: 500-5,000 microns

  • Expansion ratio: 10-50×

  • Topcoat required: Yes (for weatherproofing)

4. Fire Rating Requirements by Structure Type

Building Type Required Fire Rating Typical Solution
High-rise residential 90-120 minutes SFRM 25-40mm
Industrial warehouse 60-90 minutes Board system 30mm
Shopping mall 120 minutes Intumescent 2mm
Power plant 180+ minutes Concrete 100mm

5. Cost Factors

Material Cost Breakdown:

  • SFRM: $0.80-1.50/kg

  • Intumescent: $3-8/m² per coat

  • Labor: $15-35/m²

Total Installed Costs:

  • Basic protection (60min): $40-80/m²

  • High-performance (180min): $120-200/m²

6. Application Process

  1. Surface Preparation

    • SSPC-SP3 power tool cleaning

    • Profile: 50-75 microns

  2. Primer Application

    • Epoxy primer (50-80µm)

    • Cure time: 4-24 hours

  3. Fireproofing Installation

    • Spray: 2-3 passes

    • Boards: Mechanical fixing

    • Paint: 3-5 coats

  4. Quality Control

    • DFT checks (90-110% spec)

    • Adhesion testing (pull-off)

    • Holiday detection

7. Maintenance Requirements

Method Inspection Frequency Common Issues
SFRM Annual Cracking, moisture damage
Intumescent Biennial Chalking, UV degradation
Boards 5-year Mechanical damage
Concrete 10-year Spalling

8. Liyou Steel's Fireproofing Services

  • BIM-compatible solutions

  • UL-certified material supply

  • On-site application teams

  • 3rd party testing coordination

PRODUCT SPECIFICATIONS
No
Components

Specification



Embedded Parts




1
Anchor Bolt

M24



2
High Strength Bolt

M20,10.9S



3
Common Bolt

M16



4
Galvanized Bolt

M12



5
Shear Nail

M16



6
Tir rod

∅32*2.5



Main Steel Structure Parts




1
Steel Column (Q355B)

H550*300*10*16



2
Wind Column (Q355B)

H400*220*6*10



3
Roof Frame Beam (Q355B)

H900~500*220*10*12 H500~650*220*8*12



4
Crane Beam (Q355B)

H650*320/240*10*16/14



5
Tie Bar(Q235B)

∅168*4.0



6
Horizontal Brace (Q235B)

∅168*4.0



7
Column Brace (Q235B)

∅25



8
Angle Brace (Q235B)

L63*5.0



9
Roof Purlin (Galvanized)

Z280*80*20*2.5



10
Wall Purlin (Galvanized)

C250*75*20*2.5



11
Connecting Plate

6mm-30mm



Other Steel Structure Parts




1
Roof Panel

50mm Rock wool Sandwich panel



2
Wall Panel

50mm Rock wool Sandwich panel



3
Gutter

2mm Galvanized Steel Plate



4
Down Pipe

PVC160 (Including parts)



5
Trimming

Color steel 0.5mm Gavanized steel panel



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