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inflated tube forms used for making concrete culverts

Categories pneumatic tubular forms
Brand Name: BLESS
Model Number: dia200--3000m
Certification: ISO9001
Place of Origin: China
MOQ: 1piece
Price: USD 200---1000/pc
Payment Terms: T/T, Western Union
Supply Ability: 10000pcs/week
Delivery Time: one week
Packaging Details: woven bags, wooden cases
material: rubber and nylon fabric
cross-section: round, rectangle,square,oval,etc.
diameter: 200-3000mm
length: 3---30m
thickness: 3.2/5.2mm
hardness: 65shore A
tensile strength: >12mpa
working pressure: 0.02--0.08mpa
elongation at break: >350%
color: black
working times: 60-80times
function: inflated tube forms used for making cocrete culverts
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    inflated tube forms used for making concrete culverts

    RUBBER BALLOON

    Inflatable rubber balloon, also called pneumatic rubber air bag, is used for making concrete pre-casting formwork projects in culvert bridge construction.

    pneumatic formwork for in-situ cast of concrete pipes or for making precast elements

    Material:

    Rubber balloon is made from natural rubber and fabric. In general, rubber balloon is formed by three layers(1+2=2layers of rubber and 1 layer fabric): inner layer is high strength synthetic polymer fabric withstanding the force from concrete and air pressure. Outer layer is vulcanized rubber. Rubber hardness is about 65Shore A to keep its excellent features, such as soft, durable,wear-resistance.

    If your concrete slab is thicker, the rubber balloon should be manufactured in 2layers of fabric and 3layers of rubber(2+3).


    Standard specification

    1. diameter from 0.2m to 3m,(round)
    2. total length from 1m to 28m(round)
    3. other specifications are also available according to clients’ request.


    Technical Parameters

    ItemsIndex
    Terence of Thickness, mm

    3.2±0.2(1+2)

    5.0±0.2(2+3)

    Hardness(Shore A)65±5
    Adhesive tension of rubber and fabric,N/25mm≥8
    Tensile strength, M pa≥12
    Elongation at break, %≥350
    300% Stretch set length, M Pa6
    Stretch for deformation ratio≤20 %(Prevent distortion)
    Suitable temperature,°C-10~80
    AppearanceNo cracks, no bubbles on the surface;
    the length of impurities trace is not more than 3mm;
    the depth is not more than 1.5mm;
    the quantity of the trace is not more than one;
    the deformation is not more than 2mm.

    Working Pressure


    Diameter(mm)Pressure(Mpa)
    1500.08
    160~1900.08
    200~2200.07
    2300.06
    240~2800.05
    300~3700.045
    380~4800.04
    500~5200.035
    550~6000.03
    620~6800.025
    7000.02

    culvert balloon

    culvertballoon

    culvert balloon

    culvert balloon

    culvert balloon


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