RIBBED POLYPROPYLENE PIPES (PP)
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.
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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
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2,8
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20
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0,6
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0,4
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19,4
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14,1
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3
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20
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0,6
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0,4
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24,3
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18,3
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3
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20
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0,5
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0,4
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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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Plastic pipes
Plastic tanks
Sanitary ware
Technical plastic parts
About as
Company Krušik-plastika a.d. was established in 1975 by Krušik from Valjevo as a plant for plastic mass processing.
At first the main activity was production of plastic parts for the needs of Krušik factories and later, with intensive development, new programmes and technologies were developed. Right at the start of business operations (from 1978), a dominant position was secured for programme of production of pipes and tanks from polyethylene and polypropylene by means of extrusion spiral winding technology which is at the core of production today and which makes Krušik-plastika recognizable all over former Yugoslavia and beyond.