Standard
ribbed pipes are made of polypropylene and may be reinforced or
unreinforced. At the request of users, ribbed pipes may be made of
self-extinguishing polypropylene.
Pipes have great flexibility, good mechanical and electro insulation properties. They provide good protection of cables which are exposed to humid surroundings, low temperatures and various corrosion inducing chemicals.
Depending on the load the pipes are exposed
to, they may be produced with various wall thickness. Standard colour
for reinforced pipes is orange
and for unreinforced ones yellow.
Ribbed propylene pipes are used for electrical and postal installations, and installations in construction and industry. Measures of ribbed pipes as well as tests are performed according to the following standards: JUS N.E1.052, JUS N.E1.050 and JUS N.E1.053.
Measures (mm)
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D(mm)
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d(mm)
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P(mm)
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(o)
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R(mm)
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r(mm)
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15,5
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10,7
|
2,8
|
20
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0,6
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0,4
|
19,4
|
14,1
|
3
|
20
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0,6
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0,4
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24,3
|
18,3
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3
|
20
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0,5
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0,4
|
30,5
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26,0
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3,4
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15
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0,5
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0,4
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