Description

Bare foam pig is a tool for pipeline cleaning. It can effectively absorb water and oil in the pipelines. It is a cylinder with a tapered head which helps it go ahead in pipes.

In the pipeline that is to be operated, different cleaning pigs are chosen according to different requirements in the operation. The outer edge of them is elastically sealed with the inner wall of the pipeline. The pipe transport medium can make a pressure difference. Then this power pushes the pig to go ahead in the pipeline. Foam pig has the function of drying, cleaning, and degreasing. Foam pigs can carry tools that can help them better remove and scrape rust and sediment in the pipelines. For example, some foam pigs can carry brushes to make a more effective cleaning of pipelines. While the main foundation of bare foam pigs is drying and degreasing.

Large-diameter, high-pressure, and high-grade steel are the developing trends in oil and gas pipelines. The demands for cleaning pigs are high-pressure resistance, high wear resistance, strong stability, and strong adaptability. In particular, it needs to adapt to the requirement of long-distance pipelines. The main factors to consider in cleaning pig selection include mechanical strength, wear resistance, adsorption, and reactivity of the conveying medium in the pipeline. In addition, the ability to pass through the pipeline is important too.

Introduction:

Foam pigs can pass through the pipeline easily by pressure. If you want a cleaning pig with high flexibility then choose foam pigs. Foam pig has a good traffic-ability, so it’s easy to go through the small radius of curvature of the elbow in the pipeline. The deformation amount of bare foam pig can reach 60%. You can use foam pig to do a preliminary investigation of pipelines. In addition, it is cheaper than a skeleton pig. Besides, the bare pig is a disposable product, so there is no need to maintain it. But if you want to keep it for a time before using it, you need to keep the environment cool and dry. Fire prevention is important too.

There are different densities of different foam pigs. While bare foam pigs are usually in low density and middle density: from 25kg/m³ to 35kg/m³ and from 90kg/m³ to 120kg/m³. There are two conventional foam pig types: one is made of sponges and the other is made of polyurethane. Bare foam pigs are made of sponges. The advantages of sponge products are simple processing, relatively low price, and good water absorption performance. Bare foam pigs in middle density have a better cleaning effect than bare foam pigs in low density. But the price is a little higher.

Technical parameters:

Starting pressure: 0.02 MPa

Density: Low density(1.5Lb/ft³~2Lb/ft³), Middle density(5Lb/ft³~7Lb/ft³), High density(8Lb/ft³~12Lb/ft³)

Withstand pressure: 7MPa

Stretch rate: 320%

Compression ratio: 60

Flex life: 50,000 times

Attrition rate: 4mm/100km

Operating distance: 50km~150km

Operating temperature: -30℃~100℃

Application Medium:

Raw oil, natural gas, LNG, chemical materials, cold water slurry, and running water.

Bare foam pig applications:

1. It can sweep, de-water, and dry pipelines.
2. It can exhaust gas before the pipeline hydrostatic test and de-watering after testing.
3. It can discharge ash, remove paraffin, descale, and do water treatment of the used oil and gas pipeline.

Features:

1. Soft texture
2. Good flexibility: the deformation amount can reach 60%
3. Easy to go through the small radius of curvature of the elbow
4. strong water absorption performance
5. Can do a preliminary investigation of pipelines
6. Better sealing performance and adsorption function
7. Simple process
8. Maintenance free
9. Pollution-Free
10. Can meet client requirements

Disadvantages:

They also have disadvantages. For example, they have short effective running distances. Polyurethane foam pig has the advantages of accurate molding size, good wear resistance, and long effective running distance. But there are also problems, such as high production costs and expensive raw materials. So, bare foam pig is a good choice for the preliminary cleaning of pipes. Bare foam pigs are the cheapest among all cleaning pigs.

What is a pressure pipeline?

Then what is a pressure pipeline? A pressure pipeline is a tubular device used to transport gas or liquid at a certain pressure. The scope includes gas, steam medium or flammable, liquefied gas, and toxic, corrosive liquid. The maximum working pressure is bigger than or equal to 0.1MPa. And the maximum working temperature is higher than or equal to the standard boiling point. And the nominal diameter of the pipeline is greater than 25mm.

Pressure piping is a system. The pressure pipeline has a large length-diameter ratio, which is easy to become unstable. The fluid flow state in the pressure pipeline is complicated, the buffer room is small, and the working condition change frequency is higher than that in the pressure vessel. Such as high temperature, high pressure, low temperature, low pressure, displacement deformation, wind, snow, earthquake, and so on. These factors can all affect the stress of the pressure pipeline. There are many kinds of materials. All kinds of materials have their own characteristics and specific technical requirements. The selection of materials is complex. There are many kinds of pressure pipes.

Contact us

If you have the need to de-water and dry the pipelines, then choose bare foam pigs. If you have specific requirements then contact us. Click here to contact us. We will provide our best and most specific and professional service for you.

（bare foam pig）