Polipropileno-3-lineas

    Polypropylene 3 stripes

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    Product Description

    LOGO POLIPROPILENO 3 L

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    Polypropylene is a polymer derived from the polymerization of propane in the presence of catalysts under precise conditions of pressure and temperature.

    Polypropylene is part of the group of thermoplastic materials, and consequently can be melted at a specific temperature, allowing the material to be shaped and cooled later to obtain the required product.

    3 STRIPES PPH THREADED PIPES are manufactured following a special formula, developed by our company, which provides the product with a better resistance to high temperatures and impacts.

    Main Applications

    • Carrying drinkable water in high pressure systems

    • Home Water systems (cold and hot)

    • Industrial and laboratory installations

    • Ideal for using on irregular surfaces due to its flexibility and lightweight

    Advantages

    Lightweight, thanks to its low specific weight our pipes are easy to transport and manipulate in construction.

    Easy installation . Their conic threaded system can be used with all kinds of fittings which fulfill national and international Regulations

    Does not get corroded. Our PPH pipes are immune to chemical attacks of most fluids, even to the most aggressive ones.

    Does not allow the formation of crust, due to its smooth internal surfaces which do not allow sediments to deposit..

    Better resistance to abrasion

    High chemical resistance to the majority of the industrial substances, even to the most aggressive ones and under unfavorable conditions.

     

    Excellent Hydraulic characteristics, due to its low absolute roughness e= 0.02 mm (smooth internal surfaces) Have a e factor (Hanzen-Williams coefficient) of 150.

    Resists hot and cold water. (See Table 1)

    High Energy saving because thermal losses through their walls are reduced to a minimum.

    Does not pollute drinkable water, does not transmit smells, colors, or flavors. Ideal for carrying drinkable water and food products.

    Long Lifespan (50 years) guaranteed by security coefficients used when designing the pipes.

    More economic. Considering their lower cost and their better reliability these pipes are unsurpassable compared to other products (PVC, galvanized iron, etc)

    Properties

    Working temperature:

    Our PPH Tubes can work at very high fluid temperatures (80ºC), at continuous service and higher temperatures for shorter periods of time (See Table Nº1). Due to its low thermal conductivity, heat losses are minimum, keeping a constant fluid temperature, and saving energy compared to pipes made of other materials.

    Resistance to weather elements:

    Polypropylene pipes do not have protection against ultraviolet rays (UV), so if they are installed directly under the sun, their lifespan will be affected.

    Resistance to chemicals:

    Polypropylene is immune to chemical attacks of most of the agressive fluids with the exception of some strong acids and and oxidizing agents. (UNIT 799 & DIN 8078 Annex. 1)

    Thermic expansion and contraction:

    The difference of temperatures produces, on the pipes, expansions and contractions of their diameter that must be taken into account when designing an installation. Polypropylene’s tubes expand and contract 0.00016 Mt per meter and ºC.

    figura1

    In build in installations pipes must be covered with plastic film or cardboard to allow movements and it is recommend to leave 1 cm per meter of pipeline when there are changes of direction as showed in the picture Nº 1.

    In external installations and when temperature variations are important, it is recommended to insert in straight lines expansion joints (fittings with double elastic joints) or other for the same purpose (lyres or omegas) . (See Figure Nº 2; a, b y c)

    Figure Nº2
     Figure2

    Physical properties
    Melt flow rate  (MFI, 230/2,16 ASTM D1238) 0.7 g/10 min
    Density 0.910 g/cm3
    Tensile Strength 290 Kg/cm2
    Breaking point elongation >50%
    Plastic deformation (1 min) 10000 Kg/cm2
    Toughness Shore D  (23ºC) 72
    Coefficient of thermic expansion 0.00016 m/m/ºC
    Thermic conductivity 0.19 Kcal/(m x h x ºC)
    Dielectric rigidity 800 Kv/cm
    Table Nº1
    laboratorio

    Quality Control:

    All products manufactured by Plastiducto S.A. are continuously monitoried by our Quality Control Department. It analyzes raw materials, dimensions and manufacturing control, ending with tests required by National and International Regulations to assure the quality of our tubes.

    PPH R 3 Lines Tubes are approved by the Sanitary Department of Intendencia Municipal de Montevideo – IMM (Municipality of Montevideo) Resolutions Nº 4.968/90 & 10.930/93

     

    Table of nominal sizes, nominal pressures and weights

    Nominal Diameter(“) External Diameter (mm) 3 YELLOW STRIPES PN 10  3 GREEN STRIPES PN 8
    Thickness  (mm) Test pressure (1 hour, 20ºC) KG/CM2 (Kg/m) Thickness
    (mm)    		 Test pressure (1 hour, 20ºC) KG/CM2 Weight per meter (kg/m)
    1/2 21.3 3.4 80 0.188
    3/4 26.9 3.9 71 0.274
    1 33.7 4.9 71 0.430
    1 1/4 42.2 5.7 66 0.633
    1 1/2 48.3 6.3 63 0.806
    2 60.3 7.5 60 1.203
    2 1/2 76.1 6.4 39 1.363
    3 88.9 7.2 37 1.797
    4 114.3 8.8 35 2.816

    Working Pressure and times related to temperature for PPH Pipes PN10 Kg/10cm2

    The Regression curve for PPH pipes, from which the figures for Table nº 1 are obtained, allows s (working admitted tension) to be determined for different temperature and time ranges.
    A higher working pressure than the nominal pressure can be obtained due to the updating of the Regression Curve.
    Reference Norm: DIN 8077/ June 1999, Germany

    These figures are based on pipes at continuous service under the referred pressures and temperatures.

    At domiciliary installations hot water only circulates when consumed; this highly increases the security factors.
    Temperature Years Working Pressure (kg/cm²)
    20ºC 1 14.6
    5 13.4
    10 12.9
    25 12.2
    50 11.8*
    40ºC 1 10.7
    5 9.6
    10 9.2
    25 8.6
    50 8.2
    60ºC 1 7.4
    5 6.6
    10 6.2
    25 5.9
    50 5.4
    80ºC 1 4.9
    5 4.1
    10 3.5
    25 2.8
    95ºC 1 3.4
    5 2.3
    10 1.9
    figura3figura4

    Threaded PPH 3 Stripes pipes are available in 2 nominal pressures: PN6 & PN10
    The Nominal Pressure (PN) is the continuous working pressure for a lifespan of 50 years at 20ºC

    Design Equation
    NP = 2 x s x e/ (D –e) Equation Nº 1

    Where: 

    NP: Nominal Pressure of pipe in Kg/cm2
    e: Pipe’s Thickness (mm)
    D: Average External diameter (mm)
    s: Design Allowed tension in Kg/cm2
    s can be determinate (for 50 year lifespan at 20ºC) using a security factor (sf) of 2.2 and thus:

    s=MRS/sf =110/2.2= 50 Kg/cm2(Figure Nº 3)

    Important considerations:

    Threaded polypropylene pipes are over dimensioned in their thickness in order to balance the effect of the thread.
    The thickness of the threaded polypropylene pipe can be determined as: er= e + De (Figure Nº 4) where thickness (e) is calculated in mm using the former equation and De is the over dimension.

    When substituting e by er in (ecuation Nº1), a higher resistance to pressure is obtained, pipes resist higher working pressure and have a longer lifespan than that inferible from their nominal pressure. This is true only when installed with threaded fittings that contribute to the pipe’s resistance.

    Joint Method

    union1union2 union3

    PPH 3 Stripes pipes can be installed with all kinds of polypropylene and metal  (iron, and/or bronze) which provides them with a wide range of applications, without decreasing its performance at high temperatures.

    To obtain a good thread, do as follows:

    A)Thread with the appropriate tool, one turn to the right and ¼ to the left, so as to detach shaving from material until the number of filaments recommended for each diameter is completed as shown in Table Nº1.

    B) Seal the threads with silicones and/or teflon.

    C) Tight the fitting by hand so that it is not tighten too much. The internal thread of the fitting must cover all pipe filaments.

    Diameter (“) 1/2 3/4 1 1 1/4 1 1/2 2
    Thread Filaments 7 8 8 8 8 10

    Table Nº1

     

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