The base material of 3pe anti-corrosion steel pipe includes seamless pipe, spiral steel pipe(SSAW pipe) and straight seam steel pipe(LSAW pipe or ERW pipe). The three-layer polyethylene (3PE) anti-corrosion coating has been widely used in the oil pipeline industry due to its good corrosion resistance, water vapor resistance and mechanical properties.
3pe anti-corrosion steel pipe advantages:
1. Long service life Polyethylene pipe has the highest molecular weight, good stability and aging resistance. Under normal working temperature and pressure conditions, the service life can be guaranteed for more than 50 years
2. Corrosion resistance The molecular structure of polyethylene is extremely stable, resistant to chemical corrosion such as natural gas, liquefied petroleum gas, and artificial gas, and does not require secondary anti-corrosion equipment. The chemical substances in the soil will not cause any degradation to the pipe;
3. Good flexibility Polyethylene pipe is a kind of pipe with high toughness, and its elongation at break exceeds 500%. The flexibility of polyethylene tubing makes it easy to bend. In engineering, obstacles can be bypassed by changing the direction of the pipeline. In many cases, the flexibility of the pipeline can reduce the amount of pipe fittings and reduce installation costs;
4. Excellent impact resistance and earthquake resistance. The low-temperature embrittlement temperature of polyethylene is extremely low, and it can be used safely in the temperature range of -60 ° C ~ 60 ° C. It has a very strong adaptability to uneven settlement of pipe foundations. During winter construction, due to the good impact resistance of the material, there will be no brittle cracking of the pipe;
5. Good wear resistance test shows that the wear resistance of polyethylene pipe is 4 times that of steel pipe, especially in the field of mud transportation, compared with steel pipe, polyethylene pipe has better wear resistance;
6. The polyethylene pipe with small water flow resistance has a smooth inner surface and its Manning coefficient is 0.009. The smooth inner surface and non-adhesive properties ensure that polyethylene pipes have a higher conveying capacity than traditional pipes, and also reduce the pressure loss of the pipeline and the energy consumption of water delivery;
7. Good environmental protection performance Polyethylene pipes do not add heavy metal stabilizers during processing, and the material is non-toxic and harmless. It is a green and environmentally friendly pipe material, and the polyethylene material itself can be recycled and will not pollute the environment;
8. Good flame retardant and antistatic properties. Our company has specially developed flame retardant and antistatic polyethylene pipes, which are suitable for specific places such as flammable and explosive;
9. Safe and reliable connection method Polyethylene pipes are mainly connected by hot melting or electrofusion, which essentially maintains the identity of the interface material and structure with the pipe body itself, and realizes the integration of joints and pipes. It can effectively resist the hoop stress and axial tension stress caused by internal pressure, and there is no worry about water leakage or air leakage;
10. Lightweight, easy to handle, and easy to construct. The specific gravity of polyethylene pipes is only 1/8 of that of steel pipes. It is easy to handle and bend, and the welding process is simple and fast. The comprehensive cost of the project is low, and it has significant economic benefits.
Summarize
When ordinary steel pipes are used in harsh environments, severe corrosion will occur, which will reduce the service life of the steel pipes. The service life of anti-corrosion and thermal insulation steel pipes is also relatively long. Generally, they can be used for about 30-50 years, and the correct installation and use can also reduce the maintenance cost of the pipe network.
3PE anti-corrosion and thermal insulation steel pipe has good thermal insulation performance, and the heat loss is only 25% of that of traditional pipes. Long-term operation can still save relatively large resources, significantly reduce energy costs, and still have relatively strong waterproof and corrosion resistance. And there is no need to install pipe trenches, the construction is simple and fast, the overall cost is relatively low, and it also has good corrosion resistance and impact resistance under low temperature conditions. And in a certain environment, it can also be directly buried in permafrost.
3pe anti-corrosion steel pipe advantages:
1. Long service life Polyethylene pipe has the highest molecular weight, good stability and aging resistance. Under normal working temperature and pressure conditions, the service life can be guaranteed for more than 50 years
2. Corrosion resistance The molecular structure of polyethylene is extremely stable, resistant to chemical corrosion such as natural gas, liquefied petroleum gas, and artificial gas, and does not require secondary anti-corrosion equipment. The chemical substances in the soil will not cause any degradation to the pipe;
3. Good flexibility Polyethylene pipe is a kind of pipe with high toughness, and its elongation at break exceeds 500%. The flexibility of polyethylene tubing makes it easy to bend. In engineering, obstacles can be bypassed by changing the direction of the pipeline. In many cases, the flexibility of the pipeline can reduce the amount of pipe fittings and reduce installation costs;
4. Excellent impact resistance and earthquake resistance. The low-temperature embrittlement temperature of polyethylene is extremely low, and it can be used safely in the temperature range of -60 ° C ~ 60 ° C. It has a very strong adaptability to uneven settlement of pipe foundations. During winter construction, due to the good impact resistance of the material, there will be no brittle cracking of the pipe;
5. Good wear resistance test shows that the wear resistance of polyethylene pipe is 4 times that of steel pipe, especially in the field of mud transportation, compared with steel pipe, polyethylene pipe has better wear resistance;
6. The polyethylene pipe with small water flow resistance has a smooth inner surface and its Manning coefficient is 0.009. The smooth inner surface and non-adhesive properties ensure that polyethylene pipes have a higher conveying capacity than traditional pipes, and also reduce the pressure loss of the pipeline and the energy consumption of water delivery;
7. Good environmental protection performance Polyethylene pipes do not add heavy metal stabilizers during processing, and the material is non-toxic and harmless. It is a green and environmentally friendly pipe material, and the polyethylene material itself can be recycled and will not pollute the environment;
8. Good flame retardant and antistatic properties. Our company has specially developed flame retardant and antistatic polyethylene pipes, which are suitable for specific places such as flammable and explosive;
9. Safe and reliable connection method Polyethylene pipes are mainly connected by hot melting or electrofusion, which essentially maintains the identity of the interface material and structure with the pipe body itself, and realizes the integration of joints and pipes. It can effectively resist the hoop stress and axial tension stress caused by internal pressure, and there is no worry about water leakage or air leakage;
10. Lightweight, easy to handle, and easy to construct. The specific gravity of polyethylene pipes is only 1/8 of that of steel pipes. It is easy to handle and bend, and the welding process is simple and fast. The comprehensive cost of the project is low, and it has significant economic benefits.
Summarize
When ordinary steel pipes are used in harsh environments, severe corrosion will occur, which will reduce the service life of the steel pipes. The service life of anti-corrosion and thermal insulation steel pipes is also relatively long. Generally, they can be used for about 30-50 years, and the correct installation and use can also reduce the maintenance cost of the pipe network.
3PE anti-corrosion and thermal insulation steel pipe has good thermal insulation performance, and the heat loss is only 25% of that of traditional pipes. Long-term operation can still save relatively large resources, significantly reduce energy costs, and still have relatively strong waterproof and corrosion resistance. And there is no need to install pipe trenches, the construction is simple and fast, the overall cost is relatively low, and it also has good corrosion resistance and impact resistance under low temperature conditions. And in a certain environment, it can also be directly buried in permafrost.
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