Fibreglass tubes and cylinders

What can be ordered

Section: Round, square, trapezoidal or another shape; along its length the tube can also be a truncated cone or pyramid. No undercuts, or the mandrel will not come out.
Thread: Wound straight into the inner wall, without cutting the fibres.
Through holes: Formed during winding: the fibres go round the hole instead of being cut.
Inserts: Threaded metal or another material, wound in with the tube.
Tube in tube: A second tube wound over the first, for higher flexural strength.
Sandwich: An inner layer of another material against heat or corrosion, with fibreglass outside for strength.
Length: Up to 2300 mm, up to 4000 mm as a special order.
Finishing: The outer diameter is machined to size and the length cut to order; natural colour or coloured.

Inner diameter in mm. Other diameters or sections are made to order.

Non-round mandrels, mm
ф 17 × ф 24 × 2200	cone: diameters at both ends × length
ф 20 × ф 30 × 1000	cone: diameters at both ends × length
20 × 20 × 2300	rectangular section × length
40 × 40 × 2300	rectangular section × length
40 × 60 × 2300	rectangular section × length
153 × 156 × 700	rectangular section × length
173 × 173 × 800	rectangular section × length
30/60 × 30/80 × 2000	truncated pyramid × length
30/80 × 30/120 × 4000	truncated pyramid × length
40/80 × 40/120 × 4000	truncated pyramid × length
40/120 × 40/160 × 4000	truncated pyramid × length

The properties of the tubes we wind.

Density	< 2 g/cm³
Water absorption, 24 hours	< 0.3 %
Insulation resistance	> 1·10¹⁴ Ω
Dielectric strength, across the layers	40 kV / 3 mm
Flexural strength, by winding pattern	165…490 MPa
Dielectric loss angle	low, lets radio waves through
Corrosion and chemically active media	resistant