3PE anti-corrosion generally consists of 3 layers:
The first layer of epoxy powder (FBE>100um)
The second layer of adhesive (AD) 170～250um
The third layer of polyethylene (PE) 2.5～3.7mm
In actual operation, the three materials are mixed and integrated, and after processing, they are firmly combined with the steel pipe to form an excellent anti-corrosion layer. The processing method is generally divided into two types: winding type and round mold covering type.
1. 3pe anti-corrosion steel pipe has extremely high sealing performance, long-term operation can greatly save energy, reduce costs, and protect the environment.
2. Strong corrosion resistance, simple and quick construction, and the service life can reach 30-50 years.
3. It also has good corrosion resistance and impact resistance under low temperature conditions, and PE has low water absorption.
4. At the same time, it has high epoxy strength, low water absorption of PE and good softness of hot melt adhesive. It has high anti-corrosion reliability. This kind of anti-corrosion is characterized by simple production process, good anti-corrosion effect and low price. It is a pipe manufacturing Anti-corrosion method generally recognized by the industry, three-layer polyethylene (3PE) steel pipe anti-corrosion, two-layer polyethylene (2PE) steel pipe anti-corrosion for petroleum and natural gas, standard: SY/T0413-2002; DIN30670
1. It is suitable for underground coal mine water supply and drainage, underground spraying, positive and negative pressure ventilation, gas drainage, fire sprinkler and other pipe networks. Process water waste and return water conveying pipelines in thermal power plants.
2. It has excellent applicability to the water supply pipeline of the anti-sprinkling and sprinkling system. Cable protection sleeves for power, communications, highways, etc.
3. It is suitable for high-rise building water supply, heating network heating, tap water engineering, gas transportation, buried water transportation and other pipelines. Process pipelines for transporting corrosive media in industries such as petroleum pipelines, chemical pharmacy, printing and dyeing industries
4. Sewage treatment discharge pipes, sewage pipes and biological pond anti-corrosion projects. 2PE anti-corrosive steel pipes for agricultural irrigation pipes, deep well pipes, drainage pipes and other network applications.
the first layer of adhesive (AD), the second layer of polyethylene (PE), the two materials are integrated, the thickness of each layer is the same as the three-layer PE.
Standard: SY/T0413-2002 Technical Standard for Polyethylene Anti-corrosive Coating for Buried Steel Pipeline.
GB/T23257-2009 Technical Standard for Polyethylene Anti-corrosive Coating for Buried Steel Pipelines.
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