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Spirally welded steel tubes coated with extruded polyethylene
-according to DIN 30 670
-dimensional range 219,1 – 813 mm,
-wall thickness between 5 and 14,2 mm
-fabrication material L245-L415 or another types of steels according to different execution standards.
Types of covering:
-normal type N-n and N-v for the temperatures up to 50°C;
-special type S-n and S-v for the temperatures up to 70°C.
This coverings are applied to a normal wall thickness (n) or strengthened (v).
Covering layer thickness (min.) mm |
Outside diameter, mm |
219,1-244,5 |
273-457 |
508-762 |
813 |
Nn/Sn – Normal (n) |
2,0 |
2,2 |
2,5 |
3 |
Nv/Sv – Strenghtened (v) |
2,7 |
2,9 |
3,2 |
3,7 |
The covering composition: triple layer composed from a layer of epoxy resin, adhesive and extruded polyethylene.
Domains of use:
-Transport of gases and natural gases.
Benefits:
-Corrosion resistance;
-Long lasting life duration;
-Insulation durability;
-Good resistance to the defects that may occur during transportation;
-High resistance to mechanical damages with neighboring metallic structures.
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