Description
Technical Parameters
Fish Plate Commercial & Procurement Specification
| Category | Specification | Purpose / Implication |
|---|---|---|
| Pricing Basis | • Unit of Sale: Per pair or per set • Minimum Order Quantity (MOQ): e.g., 50 pairs • Key Cost Drivers: Material grade, heat treatment, coating, order volume. |
Clarifies negotiation terms and cost structure. |
| Compliance & Documentation | • Primary Standards: AREMA, EN 13146, GB/T, or client-specific standards. • Mandatory Certs: 3.1 Material Certificate, Heat Treatment Certificate. |
Required for project approval and ensures quality compliance. |
| Warranty & Lead Time | • Standard Warranty: 2 years against manufacturing defects. • Standard Lead Time: 5-7 weeks for standard sections. |
Manages project scheduling and risk. |
Fish Plate Technical & Quality Control Parameters
| Inspection Category | Parameter | Standard / Requirement |
|---|---|---|
| Dimensional Check | Overall Length | Tolerance: ± 2.0 mm |
| Bolt Hole Spacing | Tolerance: ± 0.5 mm | |
| Bolt Hole Diameter | Tolerance: +0.5 mm / -0.0 mm | |
| Section Profile | Must match rail profile with specified gap tolerance | |
| Material & Mechanical | Steel Grade | 60# steel, B7, or equivalent micro-alloyed steel |
| Tensile Strength | ≥ 800 MPa (for premium grades) | |
| Yield Strength | ≥ 550 MPa | |
| Hardness | 241 - 302 HBW (typically 20-30 HB less than rail hardness) | |
| Impact Toughness (Charpy V-notch) | ≥ 27 J @ 20°C | |
| Performance Testing | Fatigue Test | Passes 2 million cycles at designated load |
| Salt Spray Test | ≥ 72 hours for galvanized coating (per ASTM B117) |
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