Company

Surface Finishing

Basic material surfaces

2B (IIIc)

2B (IIIc)

- cold-rolled metal with 2B (IIIc) surface in accordance with EN 10088-2
- smooth and slightly reflective surface, uniformly gray color
- surface irregularities that appear during the production process are tolerated
- metal roughness (before tank production): 0.1 μm < Ra < 0.5 μm
- product roughness is not inspected

2R (IIId, BA)

2R (IIId, BA)

- cold-rolled metal with 2R (IIId) surface in accordance with EN10088-2, bright annealing
- very smooth, bright and highly reflective surface
- surface irregularities that appear during the production process are tolerated
- metal roughness (before tank production): 0.03μm < Ra < 0.1 μm
- product roughness is not inspected

1D (IIa)

- hot-rolled metal with 1D (IIa) surface in accordance with EN10088-2
- slightly rough, minimally reflective surface
- most frequently used with thicker sheet metal
- surface irregularities that appear during the production process are tolerated
- metal roughness (before tank production): 2μm < Ra < 6 μm
- product roughness is not inspected

 

Additional surface finishing

Stainless steel sheets with a 2B, 2R or 1D surface finish can be additionally treated based on customer needs and the demands of the technological process the tank will be used for. Additional surface finishes are used to create a different surface pattern and change surface roughness. With the external surface, the emphasis is on its appearance, while the internal surfaces must be smooth and easy to clean.

Škrlj's production capacity encompasses various stainless steel surface treatment processes. Our company has a plain sheet and tank bottom grinding line, a circle polishing machine and an automatic sandblasting chamber (using CrNi beads), and we also offer mechanical polishing and electropolishing services.

Circle polished - flowered finish

krozkana

 

Sandblasted

peskana

 

TiN coating, copper color

TiN coated

 

Scotch brite

scotch brite

 

Ground surface K80

brusena K80 

 

Ground surface K120 

povrsina K120

 

Mechanically polished surface

mehansko polirana

 

Polished surface No.8

mirror polished No.8

 

Surface properties

CIRCLE POLISHED - FLOWERED FINISH 
(K)
  • metal with 2B or 2R surface
  • easier to maintain than smooth surfaces with no additional treatment
  • basic material surface irregularities and surface irregularities that appear during the production process are tolerated
  • final product roughness is not inspected

PASSIVATED
  • chemically treated
  • without mechanical treatment
  • final product roughness is not inspected
SCOTCH BRITE
(SB)
  • surface mechanically brushed with SCOTCH BRITE material 
  • metal with 2B or 2R surface
  • brushing leads to a uniform and aesthetic surface quality
  • final product roughness is not inspected
SANDBLASTED
CrNi beads
(S)
  • surface sandblasted with CrNi pearls in sandblasting chamber
  • metal with 2B, 2R or 1D surface
  • final product roughness is not defined
TiN COATING
  • titanium nitride (TiN) coating, can be used to give the steel a different metallic color
  • polished and reflective surface
  • the TiN coating is safe for food, it is corrosion and UV resistant, and does not fade
GROUND
(BC)
(BK)
  • surface mechanically ground
  • grinding leads to a uniform and aesthetic surface quality
  • final product roughness is not defined
GROUND
B80 / B120 / B180 / B220 / B320
  • GROUND B80: surface mechanically ground to final roughness Ra < 1.6 μm, final grinding with abrasive band grit size K80
  • GROUND B120: surface mechanically ground to final roughness Ra < 1.2 μm, final grinding with abrasive band grit size K120
  • GROUND B180: surface mechanically ground to final roughness Ra < 0.8 μm, final grinding with abrasive band grit size K180
  • GROUND B220: surface mechanically ground to final roughness Ra < 0.6 μm, final grinding with abrasive band grit size K220
  • GROUND B320: surface mechanically ground to final roughness Ra < 0.4 μm, final grinding with abrasive band grit size K320
MECHANICALLY POLISHED
(PC)
(PK)
  • mechanically polished to mirror finish
  • polishing leads to a uniform and aesthetic surface quality
  • final product roughness is not defined
MECHANICALLY POLISHED
P08 / P06 / P04
  • MECHANICALLY POLISHED P08: surface mechanically polished to mirror finish, final roughness Ra < 0.8 μm
  • MECHANICALLY POLISHED P06: surface mechanically polished to mirror finish, final roughness Ra < 0.6 μm
  • MECHANICALLY POLISHED P04: surface mechanically polished to mirror finish, final roughness Ra < 0.4 μm
ELECTROPOLISHED
E08 /E06 / E04
  • ELECTROPOLISHED E08: final grinding with abrasive band grit size K180, electropolished, final roughness Ra < 0.8 μm
  • ELECTROPOLISHED E06: final grinding with abrasive band grit size K220, electropolished, final roughness Ra < 0.6 μm
  • ELECTROPOLISHED E04: final grinding with abrasive band grit size K320, electropolished, final roughness Ra < 0.4 μm