program
Výrobní program O firmě Certifikáty Ceník Kontakty
1. Pre-insulated Pipeline Systems
Introduction – General Information
Insulating Layers
Outer Protective Layers
Pipeline and Fittings
PIP 130 A, B, C
PIP 180 A, B, C
PIP 210, 240, 270
PIP 300 A, B, C
Elbows, Branches, Reducers, Compensators, Fixed Points
Accessory Parts - Entries, Pipeline Ends, Expansion Cushions
Mounting Instructions for Pipeline Connection, Coupling Design
Safety Regulations
Handling, Storage
Planning Activity Documents
Earth Works
Thermal Losses of Distribution Systems – k-Coefficient
Heat Dilatation PIP
Solution of Heat Dilatation
Compensating Bodies L, Z, U
Heat Tensioning of Pipeline
Axial Compensators
Steam Distribution System
Installation Length, Friction Forces, Pipe Cross-Sections
Monitoring System
2. Production Assortment of the Company IZO

Applied Materials

The material of medium-conducting pipeline depends on purpose of use, temperature and character of medium being conducted, eventually on customer requirements.

Pipes of following materials may be used:
        - steel - basic version pro steam distribution systems, central heating, domestic hot water (DHW)
     - PPR - distribution systems of DHW, cold water, other chemicals
     - PEX - distribution systems of central heating (temperature limitation), DHW
     - copper - distribution systems of DHW
     - stainless steel - distribution systems of condensate, special usage
     - laminate - central heating, DHW, condensate pipeline
     - galvanized steel        - distribution systems of DHW, cold water
     - polybutene - distribution systems of DHW, industrial distribution systems

Medium-Conduting Pipeline – Steel Pipe

They build up carrying line of products for all kinds of distribution systems. In the basic version they use steel seamless plain pipes according to ČSN 42 575, material quality 11 353.1.

Characteristic of material:
Test pressure 6 MPa
Yield strength   σk 330 MPa
Strength   σkt       420 MPa
Ductility   % 5 d
Density 7.85 kg/cu. dm
Coeff. temp. cond.   λ 75 Wm-1K-1

Mechanical properties depending on the medium temperature:
T E σPt σKt α
[°C] [N/sq. m] MPa MPa [K-1]
20 2,06 . 105 384,0 278,0 0,990 . 10-5
100 1,99 . 105 372,2 239,5 0,110 . 10-4
150 1,97 . 105 402,4 207,1 0,116 . 10-4
200 1,95 . 105 439,5 206,6 0,121 . 10-4
250 1,91 . 105 453,4 201,3 0,125 . 10-4
300 1,86 . 105 414,5 156,3 0,129 . 10-4

Medium-Conduting Pipeline – Steel Pipe

Welded steel pipes
DN d s V M
[mm] [mm] [mm] [cu.dm.m-1] [kgm-1]
20 26,9 2,3 0,39 1,40
25 33,7 2,6 0,64 1,99
32 42,4 2,6 1,10 2,83
40 48,3 2,6 1,46 3,25
50 60,3 2,9 2,33 4,11
65 76,1 2,9 3,88 5,21
80 88,9 3,2 5,35 6,74
100 114,3 3,6 9,01 9,77
125 139,7 3,6 13,79 12,08
150 168,3 4,0 20,18 16,21
175 193,7 4,5 26,79 21,00
200 219,1 4,5 34,67 23,82
250 273,0 5,0 54,33 33,05
300 323,9 5,6 76,80 43,96
350 355,6 5,6 93,16 48,34
400 406,4 6,3 121,80 62,16
450 457,0 6,3 155,10 70,03
500 508,0 8,0 190,12 98,65
600 610,0 8,0 277,10 118,77
DIN 2448, DIN 1629, DIN 2458, DIN 1626
material St 37.0

Seamless steel pipes
DN d s V M
[mm] [mm] [mm] [cu.dm.m-1] [kgm-1]
20 26,9 2,6 0,37 1,56
25 33,7 2,6 0,64 1,99
32 42,4 2,9 1,05 2,83
40 48,3 2,9 1,42 3,25
50 60,3 2,9 2,33 4,11
65 76,1 3,2 3,8 5,75
80 88,9 3,6 5,26 7,58
100 108 4 7,85 10,26
100 114,3 4 8,87 10,85
125 133 4,5 12,07 13,86
125 139,7 4,5 13,42 14,86
150 159 4,5 17,67 17,15
150 168,3 4,5 19,93 18,71
175 193,7 5,6 26,16 25,97
200 219,1 6,3 33,49 33,06
250 273 7 52,68 46,91
ČSN 42 57 10.0; ČSN 42 67 14
In steel grades 11 353.1, 11343, 11 353.3, 12 021.1, 12 022.1

Medium-Conduting Pipeline – Plastic Pipe

In contrast to all-purpose use of a steel pipe the plastic pipes have limited usage through temperature range primarily. Into the standard production assortment in plastic version it belongs above all the polypropylene of the type 3 (PPR) intended for distribution systems of DHW, eventually other special usage.

Characteristic of material:
Material Hostalen 5216 G.34
Test pressure 2,5 MPa
strength     σkt       40 N/sq. mm
Modulus of elasticity 800 N/sq. mm
Density 0.895 kg/cu.dm
Wall roughness 0.01 mm
Rate of medium flow 3 mps
Expansion ratio     α 1,5.10-4K-1
Coeff. of ther. cond.     λ 0.24 Wm-1K-1

Dimensions range according to standards DIN 8077 and 8078:
D Wall thickness Inside diameter
Dimensions: mm PN 10 PN 16 PN 20 for PN 20
20 1,9 2,8 3,4 13,2
25 2,3 3,5 4,2 16,6
32 3 4,5 5,4 21,2
40 3,7 5,6 6,7 26,6
50 4,6 6,9 8,4 33,2
63 5,8 8,7 10,5 42
75 6,9 10,4 12,5 50
90 8,2 12,5 15 60

Bondstrand - these medium-conducting pipes are made of epoxide resin reinforced with fibre glass. They are used particularly for trunk distribution systems of central heating, DHW, drinking water and others.

Characteristic of material:
Strength     σkt       54 N/sq. mm at 60 °C
Expansion ratio     α 1,8 . 10-5 K-1
Coeff. of ther. cond.     λ 0.33 Wm-1K-1
Wall roughness 0.0053 mm

Maximum allowable working temperature = 120 °C.
Working pressures depending on the temperature up to 6 MPa.

DN d x s Volume hm
mm cu. dm/m kg/m
25 34,3x3,7 0,6 0,85
40 49,3x3,7 1,4 0,9
50 60,3x3,6 2,2 1,2
80 88,9x3,6 5,2 1,9
100 114,3x4,6 8,7 3
150 168,1x4,6 19,9 4,5
200 219,0x5,1 34,2 6,4
250 273,4x5,1 54,3 8
300 327,1x5,1 77,3 10
350 355,8x5,7 93 12
400 406,7x6,5 122 15

PEX = reticulated polyethylene

Characteristic of material:
Max. temperature of the medium 95 °C
Test pressure 1.0 MPa
Strength     σkt       25-30 N/sq. mm
Modulus of elasticity 800 N/sq. mm
Expansion ratio     α 1.4.10-4 K-1
Coeff. of ther. cond.     λ 0.38 Wm-1K-1
- resistant to oxygen diffusion

Dimensions according to requirement, i.e. DN 20 až DN 110; PN 6, PN 10

POLYBUTENE (PB)

Characteristic of material:
Max. temperature of the medium 95 °C
Density 0.925 g/cu. cm
Yield point 17 N/sq. mm
Ultimate tensile strength 34 N/sq. mm
Elongation at rupture 320 %
Modulus of elasticity 400 N/sq. mm
Expansion ratio 1.23 x 10-4K-1
Heat conductivity 0.22 W/mK

DN 25, 32, 40, 50, 63, 75, 90, 110, 125, 140, 160

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