ASTM A325 A490M EN 14399 F3125M Heavy Hex Structural Bolts HDG F3393M Class G Coating Geomet For Steel Bridge Project

ASTM A325 A490M EN 14399 F3125M Heavy Hex Structural Bolts For Steel Bridge Project

ASTM A325 · A490M · EN 14399 · F3125M
F3393M Class G
HDG Hot-Dip Galvanized
Steel Bridge Projects

#HeavyHexBolts   #ASTM A325   #A490M   #EN14399   #F3125M   #HotDipGalvanized   #SteelBridgeFasteners   #HighStrengthBolts   #ClassGCoating

✅ Meets ASTM A325 / A490M / EN 14399 / F3125M

Heavy Hex Structural Bolts engineered for demanding steel bridge and heavy steel structure connections. Featuring F3393M Class G coating system combined with Hot-Dip Galvanized (HDG) process, delivering exceptional corrosion resistance and tensile strength. Compliant with international bridge engineering standards. Ideal for bridge construction, high-rise steel frames, and heavy machinery connections.

🔧 Grade: 8.8 / 10.9 / 12.9
🧪 Coating: F3393M Class G (HDG)
📐 Sizes: M12 – M36 (Metric / Inch)
🏗️ Applications: Steel Bridges, Wind Power, Heavy Steel

📋 Standards & Performance

  • ASTM A325 Structural Bolts (Type 1, 2, 3)
  • ASTM A490M High-Strength Alloy Steel Bolts
  • EN 14399 European Standard High-Strength Structural Bolts
  • F3125M US Standard Heavy Hex Head Bolts
  • F3393M Class G Special Coating System (HDG)
  • Tensile Strength: 830 MPa – 1040 MPa (depending on grade)
  • Hardness: HRC 33 – 39 (A490M / Grade 10.9)

⚡ Coating Advantages · HDG

  • F3393M Class G advanced coating system
  • Hot-Dip Galvanized (HDG) thickness ≥ 85µm
  • Salt spray resistance > 1000 hours (ASTM B117)
  • Excellent adhesion and impact resistance
  • Suitable for outdoor / marine environment bridge projects
  • Conforms to SSPC / ISO 1461
  • Reduces hydrogen embrittlement risk, ensures structural safety

📏 Product Specifications / Technical Data

Product Heavy Hex Structural Bolts
Standards ASTM A325 / A490M / EN 14399 / F3125M
Coating F3393M Class G Geomet  / HDG Hot-Dip Galvanized
Material Carbon Steel / Alloy Steel (SCM435 / 40Cr)
Strength Grade 8.8 / 10.9 / 12.9
Diameter M12 – M36 (1/2″ – 1-1/2″)
Length Range 30mm – 300mm (custom)
Thread Coarse / Fine (UNRC / Metric)
Head Style Heavy Hex
Finish Hot-Dip Galvanized + lubrication
Applications Steel Bridges, Wind Towers, Heavy Steel Structures
Packaging Wooden cases / Steel strapping

#SteelBridgeBolts
#ASTM A325 HDG
#A490M HighStrength
#EN14399 Fasteners
#F3125M HeavyHex
#F3393M ClassG
#BridgeProjectFasteners
#HDGCoatedBolts
#HeavySteelConnectors
#CorrosionResistantBolts

🌉 Engineered for Steel Bridge Projects · Meets International Standards

Our Heavy Hex Structural Bolts are widely used in highway bridges, railway bridges, large stadiums, offshore platforms. Full certification documentation for ASTM A325/A490M/EN 14399/F3125M and F3393M Class G HDG coating reports available. Every bolt is manufactured to the highest quality requirements.

📌 Third-party testing, batch traceability, and custom project services available.


© 2026 Tarco Industry Group — High-Strength Fastening Experts
ASTM A325 · A490M · EN 14399 · F3125M · F3393M Class G · HDG

 

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