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Pre Insulated Pipe Plastic PE HDPE LDPE Casing Pipe Extruder Machine PE Pipe Making Machine

    Buy cheap Pre Insulated Pipe Plastic PE HDPE LDPE Casing Pipe Extruder Machine PE Pipe Making Machine from wholesalers
     
    Buy cheap Pre Insulated Pipe Plastic PE HDPE LDPE Casing Pipe Extruder Machine PE Pipe Making Machine from wholesalers
    • Buy cheap Pre Insulated Pipe Plastic PE HDPE LDPE Casing Pipe Extruder Machine PE Pipe Making Machine from wholesalers
    • Buy cheap Pre Insulated Pipe Plastic PE HDPE LDPE Casing Pipe Extruder Machine PE Pipe Making Machine from wholesalers
    • Buy cheap Pre Insulated Pipe Plastic PE HDPE LDPE Casing Pipe Extruder Machine PE Pipe Making Machine from wholesalers

    Pre Insulated Pipe Plastic PE HDPE LDPE Casing Pipe Extruder Machine PE Pipe Making Machine

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    Brand Name : Huashida
    Certification : CE, Rohs,TUV
    Payment Terms : T/T
    Delivery Time : 2months
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    Pre Insulated Pipe Plastic PE HDPE LDPE Casing Pipe Extruder Machine PE Pipe Making Machine

    Pre-Insulated Pipe Plastic PE HDPE LDPE Casing Pipe Extruder Machine PE Pipe Making Machine

    gas/oil /water pipeline Puf Pre-Insulated Pipe PE shell casing plastic Machinery


    HDPE Jacket Pipe Extrusion Line is high-efficient with high speed and energy saving for producing HDPE thin wall pipe, which is used as a protective cover of PU foam thermal Pre-insulated Pipe according to international standard.
    The HDPE jacket pipe is produced by vacuum calibrating method with smooth internal and external wall, long service life, good anti-corrosion insulation and mechanical performance.


    Working Conditions


    Electric source3 380V(-10%,+5%)50Hz
    Total power~160kW
    Cooling water≤20ºC,≥0.3Mpa, 26~30 m3/h
    Compressed air0.4m3/min,>0.5MPa
    Dimension24*3*3m
    Material
    HDPE granules

    Technical Prameters:

    StylePE-365/760PE-420/960PE-850/1372
    Main extruderSJ-90/33SJ-90/33SJ-120/33
    Pipe diameterΦ365-960mmΦ 420-Φ 960 mmΦ 850-Φ 1372 mm
    Capacity550-700kg/h550~700 kg/h700~900 kg/h
    Installed power360kw380 kw440 kw
    Length35m36 m40 m




    The production steps of the insulation layer for a pre-insulated pipe, specifically focusing on the polyurethane (PU) foam insulation, are outlined below in detail:

    1. Formation of the Casing Structure:
      • The steel pipe is first inserted into the high-density polyethylene (HDPE) outer protection pipe, creating a casing structure.
      • Supports are evenly arranged in the annular space between the steel pipe and the HDPE outer pipe to maintain a uniform distance and prevent the two pipes from touching directly.
      • The two ends of the casing are sealed with flanges to ensure that the polyurethane foaming material will be contained within the space during the injection process.
    2. Preparation of the Steel Pipe Surface:
      • Prior to the injection of the insulation material, the surface of the steel pipe undergoes pre-treatment such as shot blasting or blast cleaning. This step removes any impurities, rust, or scale, providing a clean and suitable surface for optimal adhesion of the polyurethane insulation.
      • Additionally, corona treatment of the polyethylene pipe shell's surface may also be performed to enhance its adhesion properties.
    3. Injection of Polyurethane Foaming Material:
      • The casing structure is hoisted onto a foaming platform specifically designed for this purpose.
      • A high-pressure foaming machine is used to inject the polyurethane foaming material into the casing. The material expands and fills the entire annular space between the steel pipe and the HDPE outer pipe.


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