At Steelmet Industries, we engineer our cold drawn steel bright bars to meet the extreme demands of structural and load-bearing fasteners used in bridges, power plants, mining equipment, and heavy industrial machinery – where failure is not an option.
Why Structural Fasteners Demand Superior Materials
Load-bearing fasteners must withstand:
✔ Constant vibration and dynamic loading
✔ Shear forces from structural movements
✔ Corrosive environments (offshore, chemical plants)
✔ Temperature extremes (-40°C to +400°C)
Our specialty:
✓ Ultra-clean steel with sulfur ≤0.025% for hydrogen resistance
✓ Controlled grain flow for uniform strength in large diameters
Critical Applications in Heavy Industries
1. Civil Infrastructure
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Bridge expansion joint bolts (ASTM A490)
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Wind turbine foundation bolts (EN 14399 HV)
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Seismic retrofit anchor systems
2. Heavy Machinery
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Mining shovel bucket pins
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Crusher frame bolts
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Hydraulic press tie rods
3. Energy Sector
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Boiler tube hanger bolts (ASTM A193 B16)
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Flange bolts for high-pressure piping
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Nuclear containment vessel studs
Technical Specifications
| Grade | Standard | Proof Load (MPa) | Charpy Impact (J) | Corrosion Solution |
|---|---|---|---|---|
| AISI 4140 | ASTM A193 B7 | 850+ | 27@-29°C | Cadmium plating |
| 42CrMo4 | EN 14399 HV | 1100+ | 55@-40°C | Hot-dip galvanizing |
| B7M | NACE MR0175 | 725+ | 34@-46°C | Xylan coating |
| AISI 8740 | ASTM A320 L7 | 950+ | 40@-60°C | PTFE impregnation |
*Special processing available:
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Rolled threads (vs cut) for 30% greater fatigue life
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Ultrasonic testing of 100% of critical fasteners
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Dimensional certification to EN 10204 3.1/3.2*
Why Steelmet is Trusted for Critical Fasteners
✅ Heavy industry expertise – 15+ years serving EPC contractors
✅ Large diameter capability up to 150mm
✅ Material traceability with full mill certifications
✅ Technical partnership from design to manufacturing
For structural fastener solutions that won’t compromise, visit Steelmet Industries’ website or request our Heavy Industry Fastener Guide.
