Cranes, blast furnace, converter, continuous caster and rolling mill run continuously under extreme thermal and mechanical loads. Repair windows are short, components are large and hot — workshop solutions are rarely an option.
HSOS supports steel plants with on-site machining of cranes, converter trunnion rings and mill stands, sealing-face machining, PWHT on thick-walled welds and controlled bolt-tensioning on high-temperature flanges. Leak sealing on energy and utility lines is performed during operation.
Documentation to AD 2000, ASME and plant-specific codes — audit-ready.
Challenges
- ▸Extreme temperature and cyclic loads on cranes, dummy bar heads, converters and ladles
- ▸Oversized components: trunnion rings, mill stands, tilt drives
- ▸Thick-walled welds requiring mandatory PWHT
- ▸Short, tightly scheduled repair windows in continuous operation
- ▸Hot, dusty environments with strict safety regimes
Our experience
- ✓On-site machining of converter trunnion bearing seats
- ✓Face machining on mill stands and chocks
- ✓PWHT of thick-walled joints per AD 2000 HP 7/1
- ✓Bolt-tensioning on high-temperature flanges, fully recorded
- ✓Online leak sealing on steam and utility lines
References
FAQ
Do you work during ongoing plant operation?
Yes — leak sealing and much of the machining is done online; hot areas after clearance and shielding.
Can you heat-treat thick-walled welds?
Yes, PWHT per AD 2000 HP 7/1 and ASME PCC-2 with audit-ready records.
How fast can you be on site?
Typically 4–8 hours in DACH and Benelux; up to 24 h across Europe. 24/7: +49 (0) 2335 91094-00.
Always available – fast on site
Less downtime, less production loss. Contact us – 24/7.
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