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Aseptic Range

Ends & surface finish

ENDS

The ends are machined on request :

  • BW according to various standards : ISO, DIN, SMS and for welding fittings,
  • Clamps fi ttings ISO, SMS, metric,
  • SW or threaded for non-aseptic circuits

Clamp fittings

L1 : for ISO, DIN tubes
L2 : for SMS tubes

DN 8 10 15 20 25 32 40 50
L1 (mm) 90 117 127 137 177 196 211 240
L2 (mm) 90     150   182   226

SURFACE FINISH

State Way of facturing Ra (μm) Aspect Grain
1 Rough 3,2 Satin 60
2 Mechanical polishing inside body 1,6 Half-brillant 120
3 Mechanical polishing inside body 0,4 Fine-brillant 280-380
4 State 1 + electropolishing internal and external 2 Brillant 120
5 State 1 + electropolishing internal and external 0,8 Brillant polish
180-320
6 State 1 + electropolishing internal and external 0,4 Mirror polish
300-500

The equivalence between Ra and the grain size is only for information. Stainless steel bonnets may be electropolishing.

Electropolishing

Electropolishing is an electro-chemical method of removing metal from a surface. The piece to be treated is immerged in a tank filled up with an electrolyte and connected to the positive pole of a current potential. The negative pole is connected to the cathode. The current drives with a high potential the peaks and with a low potential the cavities.

The inherent benefits derived from electropolishing are as follows :

  • impurities are removed from the surface layer
  • reduces the friction resistance
  • enhances the corrosion resistance
  • enhances the optimization of cleanability
  • provides a pleasing brilliant appearance

 

Biosiers Industrie - 112, 114 avenue de Vendôme - BP 61007 - 41010 BLOIS CEDEX - FRANCE - Tél : (33) 02 54 20 12 12 - Fax : (33) 02 54 20 12 01