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
Bridge expansion joint bolts (ASTM A490)
Wind turbine foundation bolts (EN 14399 HV)
Seismic retrofit anchor systems
2. Heavy Machinery
Mining shovel bucket pins
Crusher frame bolts
Hydraulic press tie rods
3. Energy Sector
Boiler tube hanger bolts (ASTM A193 B16)
Flange bolts for high-pressure piping
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:
Rolled threads (vs cut) for 30% greater fatigue life
Ultrasonic testing of 100% of critical fasteners
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.
