Metallurgy & Steel Filtration
Pleated, depth and bag filter cartridges for steel plants — hydraulic systems, roll coolant, furnace cooling water, lubrication and descaling loops. Factory-direct from PLEATPURE.
PLEATPURE filter cartridges for metallurgy & steel filtration — factory-direct manufacturing.
Why Filtration Matters Here
Pleated, depth and bag filter cartridges for steel plants — hydraulic systems, roll coolant, furnace cooling water, lubrication and descaling loops. Factory-direct from PLEATPURE.
- High-pressure hydraulic elements protect mill servo and proportional valves
- Cooling water strainers and bag filters remove mill scale before it scores rolls
- Sintered metal and stainless mesh elements for high-temperature furnace loops
- Interchange elements built to fit existing OEM mill housings
- Fire-resistant fluid compatible media for hot-rolling and casting circuits
APPLICATIONS
Filter Applications in Metallurgy & Steel Filtration
| Application Point | Recommended Cartridge | Why |
|---|---|---|
| Hydraulic systems | Pleated hydraulic elements, 3–10 µm | Servo and proportional valves on rolling stands fail on particle erosion. Clean oil keeps positioning accurate and extends pump life. |
| Roll coolant | Bag filter or strainer, 50–200 µm | Recirculating coolant carries mill scale and fines that score rolls and strip surface. Coarse bag protection is the standard fix. |
| Furnace cooling water | Strainer or pleated element, 100–500 µm | Open cooling loops carry scale and debris toward tuyeres and mold passages. Coarse elements keep water flowing without blocking. |
| Lubrication circuits | Depth or pleated cartridge, 10–25 µm | Mill gearboxes and circulating oil systems need steady cleanliness. Bearing wear and unplanned stops follow dirty lube oil. |
| Descaling water | Basket strainer, 200–1000 µm | Descaling pumps run at extreme pressure. A blocked nozzle costs production, so coarse self-cleaning protection is standard. |
SELECTION GUIDE
How to Choose Filters for Metallurgy & Steel Filtration
1. Map the circuit
Hydraulic oil, roll coolant, furnace water and lube oil need different micron targets. A 3 µm hydraulic element is wrong for a descaling line.
2. Set the micron to the valve
Servo circuits need 3–5 µm absolute elements; standard mill hydraulics run 10 µm. Match the element to the clearance, not the oil brand.
3. Match media to temperature
Paper and glass media fail in furnace loops. Sintered metal or stainless mesh handles 150–400 °C where pleated paper cannot.
4. Size for flow and pressure
Worked example: 200 GPM roll coolant at 40 psi pump head. Six 40-inch pleated cartridges at 25 µm give 3–5 psi clean ΔP with margin for scale loading.
5. Change on ΔP, not calendar
Mill scale loads fast. Track differential pressure and swap elements when it rises 10–15 psi above the clean reading.
CHALLENGES & SOLUTIONS
Common Filtration Challenges
Mill scale fragments plug elements fast
Stage the circuit — a coarse strainer or bag at 100–500 µm upstream of the fine element. A $30 coarse stage can triple the life of a $90 fine element.
High-temperature furnace loops
Standard pleated media degrade above roughly 120 °C. Use sintered metal or stainless mesh elements with metal seals for hot circuits.
Pressure shock and water hammer
Descaling pumps and valve switching slam the loop with pressure spikes. Duplex housings with bypass and reinforced cores absorb the shock without pleat damage.
Recommended Products for Metallurgy & Steel Filtration
FAQ
Metallurgy & Steel Filtration — FAQ
What micron rating do steel mill hydraulic filters need?
Servo and proportional circuits run 3–5 µm absolute; standard mill hydraulics run 10 µm. Roll coolant and cooling water run much coarser — 50–500 µm — because they carry scale, not valve wear particles.
How often should steel plant filters be changed?
Hydraulic elements: 3–6 months or when ΔP rises 10–15 psi above clean. Cooling water bags: 2–6 weeks under heavy scale. The trigger is differential pressure, not the calendar.
Can filter elements handle furnace cooling water temperatures?
Pleated media handle up to roughly 120 °C. Above that, sintered metal or stainless mesh with metal seals is the safe choice — no media collapse, no seal failure.
Do you make replacement elements for existing mill housings?
Yes — PLEATPURE builds interchange elements to match OEM housings by dimensions, seal and micron rating. Send your element or housing drawing and we match it factory-direct.
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