Showing posts with label anti-corrosion steel pipe. Show all posts
Showing posts with label anti-corrosion steel pipe. Show all posts

2018/04/07

Advantages of 3PE Anti-Corrosion Steel Pipe

Oil pipeline 3PE anti-corrosion steel pipe advantages:

1, long service life Polyethylene pipe has the highest molecular weight, with good stability and anti-aging
properties, under normal operating temperature and pressure conditions, the service life can be guaranteed for more than 50 years.
2, corrosion resistance Polyethylene molecular structure of high stability, resistance to natural gas, liquefied petroleum gas, artificial gas and other chemical corrosion, without secondary corrosion protection equipment. The chemicals present in the soil do not cause any degradation of the tubing.
3, good flexibility Polyethylene pipe is - kind of high toughness of the pipe, the elongation at break of more than 500%. The flexibility of polyethylene pipe makes it easy to bend. Engineering can be by changing the direction of the pipeline to bypass the obstacles, in many cases, the flexibility of the pipe can reduce the pipe fittings and reduce installation costs.
4, with excellent impact resistance, seismic resistance Polyethylene low temperature embrittlement temperature is very low, can be -60 ℃ ~ 60 ℃ temperature range of safe use, uneven subsidence of the pipe base has a very strong adaptability. Winter construction, due to the material impact resistance, will not happen brittle pipe.
5, good wear resistance test shows that the wear resistance of polyethylene pipe is 4 times the pipe, especially in the field of mud transport, compared with the steel pipe, polyethylene pipe has better wear resistance.
6, flow resistance Small polyethylene pipe has a smooth inner surface, the Manning coefficient of 0.009. The smooth inner surface and non-stick properties ensure that polyethylene pipes deliver higher delivery capacity than traditional pipes while reducing pressure loss and energy consumption in pipelines.
7, good environmental performance Polyethylene pipe in the processing does not add heavy metal stabilizer, non-toxic materials, is a green pipe material, and polyethylene material itself can be recycled, will not cause pollution to the environment.
8, good flame retardant, anti-static performance Our company has developed a special flame retardant, anti-static polyethylene pipe for flammable and other specific places.
9, safe and reliable connection Polyethylene pipe is mainly used in hot-melt or fused connections, essentially maintaining the interface material, structure and the identity of the body itself to achieve the integration of pipe and pipe, which can effectively resist the internal pressure generated The circumferential stress and the axial pull-stress, no leakage, worry about leaks.
10, light weight, easy handling, easy construction Polyethylene pipe is only the proportion of steel pipe 1/8, easy to handle, easy to bend, the welding process is simple and rapid, low overall cost of the project, with significant economic benefits.
3PE anti-corrosion welded steel pipe
3PE anti-corrosion steel pipe applications are as follows:
Sewage treatment: sewage treatment discharge pipe, sewage pipes and biological ponds anti-corrosion project.
Agriculture: agricultural irrigation pipe, deep well pipe, drainage pipes and other networks.
Coal Mine: Suitable for coal mine water supply and drainage, downhole shotcrete, positive and negative pressure ventilation, drainage gas, fire sprinkler pipe network.
Power plant: thermal power plant process waste water, return pipelines.
Fire protection: For sprinkler, sprinkler water supply pipe system has excellent applicability.
Highway: power, communications, highways and other cable protection casing.
Municipal Engineering: For high-rise building water supply, heating network heating, water projects, gas transmission, buried pipelines and other water transport.

2016/07/05

Pipe External Corrosion

1, Single FBE corrosion (FBE) Single-layerFBE Coating Epoxy powder layer because of its excellent corrosion resistance,insulation resistance and long service life and become an advanced anti-corrosion coating of the outer pipe. Sub-ordinary nature (thickness: 300 ~ 400um) andenhanced (thickness: 400 ~ 500um) two kinds.


2, Double FBE corrosion (2FBE)

Double epoxy powder coated outer coating is a composite structure,consisting of anti-corrosion epoxy powder primer and epoxy powder resistant tome chanical damage the surface layer of a coating film is completed. Normal sex(thickness ≥ 620um); enhanced (thickness ≥ 800um)


3, Two polyethylene / polypropylene anticorrosion (2PE/2PP)
Two polyethylene / polypropylene layer with good corrosion resistance,insulation resistance, long service life and resistance to mechanical damage. Sub-normal and enhanced thickness according to pipe size varies: Common Min1.8mm; enhanced minimum 2.5mm.


4, Three layer polyethylene / polypropylene anticorrosion (3PE/3PP)
Three layer polyethylene / polypropylene layer with excellent corrosion resistance, insulation resistance, longer service life and a certain degree of resistance to mechanical damage of the coating has been widely used in various large-scale projects of the corrosion in the pipeline. Common type and strengthened type two, thickness of the pipe size varies: Common minimum thickness 1.8mm; enhanced minimum thickness of 2.5mm.

2016/03/11

LSAW Steel Pipe Insulatoin Corrosion Performance Advantages

Applying insulation corrosion process on LSAW Steel Pipe is to slow down or prevent the chemical out of the media so as to ensure the steel pipes can be applied in different environment
condition for a certain period of time.


LSAW Steel Pipe insulation corrosion performance advantages are as below:

1. Good insulation properties. The heat loss is only 25% of the traditional double submerged arc welded pipe. In the long run, it can save a lot of energy, reduce energy costs significantly.

2. Highly waterproof and corrosion resistance. The insulation corrosion LSAW Steel Pipe can be directly buried in the ground or water without attached trench. It is simple and rapid
construction, and also low total cost.

3. Double submerged arc welded pipe still have good corrosion resistance and impact resistance at low temperatures. It can be directly buried permafrost.

4. The application life time can up to 30 to 50 years. Proper installation an use can double submerged arc welded pipe maintenance cost low.
5. It is allow to set alarm system. It is allowed to realize the leakage fault detection and accurate fault location and automatic alarm indication.
 

2015/12/17

3PE Anti-corrosion coating Production Flow Chart


Polyethylene three layer anti-corrosion coating, know as 3PE coating, is the world advanced anti-corrosion technology. 

1. Epoxy Primer Coating. Directly coated at the pipe surface. The thickness ranges from 60um to 80um. Ensure the overall coating has good adhesion at higher temperatures.
2. Copolymer adhesive. Mian componenet for this layer is polyolefin. The thickness of the adhesive is ranges from 170um to 250um. To make sure the top anti-corrosion coating is adhesived at the primer coating and also the pipe surface.
3. Anti-corrosion Coating (PE). The top layer is extruded polyethylene, the thickness of this lalyer is about 2mm. The total thickness of the 3PE coating is greater than 2.2~2.9mm.


3PE coating combines the excellent porperties of epoxy coating and extrusion coating of polyethylene in two. The interface properties of epoxy coatings and chemical resistance, the mechanical protection characteristics of extruded polyethylene coating combine to significantly improve the total performance of 3PE. Therefore, as buried pipelines external coating, 3PE have the most competitive advantages than other type of external coatng.

Anti-corrosion Coating for Steel Pipe


Nowadays, anti-corrosion coated steel pipe is widely used in urban underground pipe network for transporting gas, oil, water, etc. Since the pipeline need to be buried in the soil for a quite long time, so it requires water resistance, chemical resistance and other long-term corrosion resistance. Besides, anti-corrosion coated steel pipe should meet a variety of performance to make sure the pipeline could be transport, storage and embedded in the process. For example, the pipeline should meet a specific properties such as impact resistance, abrasion resistance, compressive strength, hardness, corrosion resistance, ductility, elongation strength. The importance of these properties varies by the use of different environments, construction methods and material differences. 

Polyethylene tape coating:

Epoxy powder coating:
Epoxy powder caoting is appread in the 1960s, it is applied by electrostatic spraying method. The powder is spraded onto the pre-heated tube surface, and then a dense layer coating formed after the tube cool down. The advantages for this type of coating is have good corrosion resistance, less environmenetal pollution, wide using temperature range ( ranges from 60 degrees to 100 degrees), large tube adhesion, impact resistance, less welding damage, water resistance, electrical insulation etc. While the disadvantages are vulnerable to inquiry, high technical requirements, complex equipment needed. Therefore, it is very difficult to manage the construction filed. Different manufacturers, or even different batches of product performance differences. We advise the purchasers, when they make the desicion, their choice should focus on its mechanical properties and adhesion resistance.


The using time for buried pipeline is critical. So far, PE anti-corrotion coating is considered to be the most advanced coating in the world due to its chemical stability, mechanical resistance, scratch resistance etc.