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Tubes

Tubes DIN 11850, DIN 11866, ISO 1127

LINNEMANN delivers tubes which are used in process engineering facilities for gaseous and liquid media as well as bulk goods particulary for vacuum or overpressure prozesses in chemical, food and pharma industries as well as power and environment engineering.

The delivery scope includes:

Beverage pipes according to DIN 11850 have levelled welding seams in following 4 surface versions:

  • CC: Not heat-treated, bare metal inside and outside, inside surface Ra <0,8 µm, welding seam area inside Ra <1.6 µm
  • CD: Not heat-treated, bare metal inside, Ra <1,6 µm, ground outside grain 400
  • BC: Heat-treated, bare metal inside and outside, inside surface Ra <0,8 µm, welding seam area inside Ra <1.6 µm
  • BD: Heat-treated, bare metal inside, inside surface Ra <0,8 µm, welding seam area inside Ra <1.6 µm, ground outside grain 400

Aseptic pipe according to DIN 11866 in 3 pipe size series and in the following 4 surface qualities or hygiene classes:

  • H2: inside surface Ra <0.8 µm, seam area inside Ra <1.6 µm
  • H3: inside surface Ra <0.8 µm, seam area inside Ra <0.8 µm
  • H4: inside surface Ra <0.4 µm, seam area inside Ra <0.4 µm
  • H5: inside surface Ra <0.25 µm, seam area inside Ra <0.25 µm