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6 Holes Joint Bar
Product Overview The 6-hole joint bar is a standard rail connection system designed for mainline and heavy-haul applications. These precision-engineered splice plates provide superior load transfer across rail joints while maintaining proper track geometry and alignment. learn more Fish plate...
Features
Product Overview
The 6-hole joint bar is a standard rail connection system designed for mainline and heavy-haul applications. These precision-engineered splice plates provide superior load transfer across rail joints while maintaining proper track geometry and alignment.
Fish plate Dimensional Standards
| Rail Section | Length | Thickness | Hole Diameter | Weight |
|---|---|---|---|---|
| 115RE (AREMA) | 24" (610mm) | 1.125" (28.6mm) | 1.125" (28.6mm) | 84 lbs (38kg) |
| UIC 60 | 33.5" (850mm) | 1.06" (27mm) | 1.1" (28mm) | 107 lbs (48.5kg) |
| BS-90A | 31.5" (800mm) | 1.14" (29mm) | 1.1" (28mm) | 93 lbs (42kg) |
| 136RE (Heavy Haul) | 36" (914mm) | 1.25" (32mm) | 1.18" (30mm) | 151 lbs (68.5kg) |
Steel Grade: AISI 4140 (42CrMo4 equivalent)
Tensile Strength: 950-1100 MPa
Yield Strength: ≥750 MPa
Hardness: 280-320 HB
Impact Toughness: ≥40J at -40°C
Corrosion Protection: Hot-dip galvanized (100μm)
Installation Guidelines
Rail End Conditioning
Thermite or flash butt weld preferred
Square cut (max 0.5° deviation)
Surface finish RA 6.3μm or better
Temperature Compensation
Base gap: 6mm at 20°C
Adjustment: ±1mm per 15°C temperature change
Bolt Selection
Grade 10.9 high-strength bolts
Length = joint thickness + 30mm
Use hardened washers
Torque Sequence
Step 1: Center bolts to 50% torque (200Nm)
Step 2: End bolts to 100% torque (400Nm)
Step 3: Intermediate bolts to 100% torque
Final: Re-torque center bolts to 100%
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After-sale Services
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