🔩 Core Specifications Table
| Parameter | Specification | Industry Benchmark |
|---|---|---|
| Standard | AREMA Chapter 3, ASTM A183 Grade B | FRA §213.121 |
| Material | SAE 1050 Carbon Steel (Forged) | AISI 1045 (Competitor) |
| Tensile Strength | 150,000 PSI Min | 120,000 PSI (Standard) |
| Coating | Hot-Dipped Galvanized (500g/m²) | 250g/m² (Typical) |
| Sizes | 5/8"-11 UNC x 4", 3/4"-10 UNC x 5" | Custom up to 8" |
| Head Type | Oversized Square Neck (38mm x 38mm) | 32mm x 32mm (Standard) |
| Torque Rating | 450 ft-lbs (Dry) / 350 ft-lbs (Wet) | ASTM F3125 Class A5 |
| Salt Spray Test | 2,500+ hours (ASTM B117) | 1,000 hours (AREMA Min) |
🛤️ Rail-Specific Applications
Rail Joint Bars - Secures 115RE to 176RE rails with track bolt plates
Switch Point Assemblies - Vibration-resistant frog and crossing bolts
Bridge Tie Downs - Corrosion-protected for deck transitions
Continuous Welded Rail (CWR) - Expansion control joints
Grade Crossing Plates - Impact-resistant for road-rail interfaces
📜 Certifications & Compliance
| Standard | Requirement | Our Certification |
|---|---|---|
| AREMA Ch.3 | Dimensional Tolerance | 100% Laser Scanned |
| FRA §213.121 | Fatigue Life ≥10^7 cycles | 2.1x Life (Lab Tested) |
| ASTM F3125 | Grade A5 Mechanical Properties | Exceeds by 22% |
| ISO 9001:2015 | Batch Traceability | Heat Number + QR Code |
❓ Rail Engineer FAQs
Q1: Compatible with wood or concrete ties?
A: Universal design - use insulated rail bolt sleeves (PN: IRS-65) for concrete ties to prevent electrolysis.
Q2: Maximum axle load rating?
A: Certified for 39-ton axles (78,000 lbs) - suitable for Class I heavy haul lines.
Q3: How do these handle ballast abrasion?
A: Zinc-iron alloy layer (50μm) under galvanization resists stone cutting.
If you have any needs, please feel free to consult us!
Tag:
Railroad T-Bolts - AREMA Grade B Track T-Bolts - Hot Forged 1050 Carbon Steel (5/8" & 3/4" Sizes)
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