Corrosion-resistant rolls for demanding environments.
When corrosion and cleanliness are critical, our 420 stainless steel overlay rolls provide robust heat transfer performance. The high-carbon martensitic stainless steel surface offers hardness around 50 HRC and good corrosion resistance, making it ideal for food contact, chemical processing and high-hygiene applications.
When to choose this roll
- When your coolant or product is corrosive (e.g., acids, alkalis, cleaning agents).
- When you require food-grade or hygienic surfaces.
- When high surface hardness improves wear life.
- When regulatory compliance (REACH/RoHS) necessitates stainless surfaces.
- When frequent cleaning is part of your process.
How it works
The roll is built from a carbon or alloy steel core for strength and thermal conductivity, then clad with a thick layer of 420 stainless steel via mechanical bonding or welding. This overlay provides a hard, corrosion-resistant exterior while retaining the core’s heat transfer efficiency. The roll can be fabricated as a single-shell or double-shell design with spiral baffles to suit your heating or cooling needs.
Where it pays off / Applications
Food processing equipment, beverage and dairy lines, pharmaceutical and cosmetics production, packaging film lines requiring hygiene, and chemical plants handling aggressive fluids.
Specifications / Capabilities
Diameter: 940 mm by 8000 mm O.A.L. Weight: 5000 kg.
Overlay thickness: typically 3–6 mm.
Surface hardness: ≈50 HRC after heat treatment.
Surface finish: polished to RA ≤ 0.8 µm or as specified.
Pressure rating: specified according to PED requirements and operating conditions.
Compliance & options
Manufactured to comply with PED 2014/68/EU for pressure vessels. Food-contact versions can meet EU Regulation 1935/2004, GMP (EC) No 2023/2006. Optional surface finishes include mirror, satin or textured.
