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Underground Pre Insulation Pipe with HDPE Polyethylene Jacket Canghai Nuclear

Hebei Canghai Nuclear Equipment Technology Co., Ltd.3PE anti-corrosion steel pipe is a remarkable innovation in the realm of steel pipe protection, characterized by its three-layered polyethylene (3PE) anti-corrosion coating that envelops the outer wall. This advanced composite coating is engineered to shield steel pipes-be it seamless, spiral, or straight seam-from environmental aggressors. Its exceptional properties of corrosion resistance, moisture impermeability, and robust mechanical strength make it the preferred choice in the oil pipeline sector, ensuring longevity and reliability.

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    Product Detail

    Product Description

    PE insulation pipes are also known as PE outer protection pipes, outer casings, or sleeves. The direct-buried polyurethane thermal insulation pipe features a high-density polyethylene (HDPE) protective layer on the outside, a polyurethane rigid foam filling as the thermal insulation layer in the middle, and a steel pipe as the inner layer.Polyurethane direct-buried thermal insulation pipes exhibit excellent mechanical properties and thermal insulation performance, along with strong impact resistance. Under normal conditions, they can withstand high temperatures ranging from 120°C to 180°C, making them suitable for thermal insulation projects of various cold and hot water pipelines and high-low temperature pipelines.

     

    steal pipe with Polyurethane foam insulation and HDPE jacket sleeve

    Name  Pre-insulated Pipe
    Brand Hebei Canghai Nuclear
    structure work steel pipe/polyurethane insuation layer /HDPE outer protection pipe
    the material of insuation layer polyurethane foam
     Installation Method 1.cold installation
    2.Prestress Installation
    3.Preheat Installation Method
    4.One-Time Compensator Installation Method

     
    Main Indexes of Polyurethane insulation layer 
     

    indexes preference Standard unit standard requirement
    Density CJ/T114-4.3.2 kg/m3  ≥60
    Average CJ/T114-4.3.1 mm ≤0.5
    Percentage of close area CJ/T114-4.3.1 % ≥ 88
    Compressive strength  CJ/T114-4.3.3 MPa ≥ 0.3
    Water Absorption CJ/T114-4.3.5 % Immersion in boiling water 90 minute,bubble water absorption should be not more than 10%
    Cavity CJ/T114-4.3.1   ≤ 0.033

     
    Specification of pre-insulated Pipe
     

    Specifications
    (mm)    		 steel pipe OD×Thickness
    (mm)    		 Outer protection tube diameter ×Wall thickness
    (mm)    		 Insulation thickness
    (mm)    		 Unit weight
    Kg/m
    32/90 32×2.8 90×2.5 26.5 3
    45/110 45×2.8 110×2.5 30.0 4
    57/120 57×3.0 120×2.5 29.0 6
    60/125 60×3.5 125×3.0 29.5 7
    76/140 76×4.0 140×3.0 29.0 9
    89/160 89×4.0 160×3.0 32.5 11
    108/180 108×4.0 180×3.0 33.0 13
    133/200 133×4.5 200×3.2 30.3 17
    159/250 159×4.5 250×3.9 41.6 22
    219/315 219×6.0 315×4.9 43.1 39
    273/365 273×6.0 365×5.6 40.4 49
    325/420 325×7.0 420×7.0 40.5 67
    377/500 377×7.0 500×7.8 53.7 81
    426/560 426×7.0 560×8.8 58.2 94
    478/600 478×7.0 600×8.8 52.2 104
    529/630 529×7.0 630×9.8 40.7 114
    529/655 529×7.0 655×9.8 53.2 117
    630/760 630×8.0 760×11.5 53.5 158
    720/850 720×8.0 850×12.0 53.0 181
    820/960 820×10.0 960×14.0 56.0 252
    920/1055 920×10.0 1055×14.0 53.5 281
    1020/1155 1020×10.0 1155×14.0 53.5 312
    1220/1380 1220×12.0 1380×16.0 64.0 444
    1420/1602 1420×14.0 1602×16.0 75.0 590

     

    Advantage of the pre-insulated pipe   

    1. good insulation properties
    2. low heat loss
    3.  heat loss is 25% of the traditional pipe.
    4. energy saving
    5.  about 30 yeas move the service life, low cost
    6. has a strong waterproof and corrosive resistance and high mechanical strength
    7. no attached trench ,can be directly buried in the ground or water.

     

    Standard API 5L
    Grade PSL-1 API 5L - Gr.B/X42/X46/X52/X60/X70 etc.
    ( Material) PSL-2 ISO3183 - L245/L290/L320/L360/L415/L485 etc.
    Minimum Order Quantity 1 Ton
        Outside Diameter Ranges PSL-1 0.405-80(in) or 10.3mm-2032mm
    PSL-2 4 1/2 -80(in) or 114.3mm-2032mm
              Wall Thickness Ranges SCH10~SCH160  Or  STD,XS,XXS  Or  1.73mm~59.54mm
    Length For 20Ft Container 4.8m-5.8m
    (negotiable) For 40Ft Container 4.8m-12m
            Most common choice 6m, 12m
    Type Welded ERW,LSAW/SSAW
    Seamless Cold Drawn,Hot Finished,Hot Expanded
    Cap (negotiable) Pipe size should under DN600
    Pipe End Plain end All sizes
    Bevel end Pipe size above DN50, and the thickness should greater than 3.2mm
    Our advantages ·Diverse products(Steel pipes, pipe fittings, other fittings)
    ·Any third party inspection is accepted by we company.
    ·Quick response in quotation,delivery,after-service.
    ·Focus on pipe & tube solution for project application.
    1. Nominal size of Pipe Minimum thickness of normal coating in mm
      Up to DN100 1.8 
      Over DN100 up to DN250 2.0 
      Over DN250 to below DN500 2.2 

       

      The products can also be customized according to the customer's special design and requirements.

       

       

      Our Factory

      The crystallization of 20 years manufacturing experience,
      all products are fully inspected leaving the factory, 
       acheive 100% qualified, 
       ensuring that all products are exquisite.

       

       

       

      Application And Usage

      Polyurethane ensures high resistance to chemicals, condensation, and corrosion, thus guaranteeing the long-term service life of pipelines. It demonstrates high resistance to extreme high and low temperatures (from -50°C to 135°C) and exhibits excellent insulation performance due to its low thermal conductivity coefficient (λ). For these reasons, it is often selected as a pipeline thermal insulation material. Polyurethane helps maintain the temperature of pipelines, avoid heat loss from pipelines, and prevent pipelines from freezing or bursting in cold climates.
       
      The thermal conductivity coefficient (λ) value of polyurethane is lower than that of other insulation materials such as wood, rock wool, and polystyrene, which is attributed to the high number of closed cells in rigid polyurethane foam. Therefore, the thermal insulation performance of rigid polyurethane foam is far superior to that of other insulation materials.
      1. Standard and special fittings
      2. Small and large pipes
      3. Wide radius bends
      4. Flanges
      5. Valves
      6. Support customized

       

       

      Packaging & Shipping

      To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.