How many types of line pipes are there?

Line pipes can be categorized in different types. The following pipelines are classified according to the type of fluids and items transported. - Water and Drain Line Pipe This kind of Line pipes are typically utilized to carry water from treatment plants to buildings or houses. They form a network of underground pipes under cities and streets. Water pipes are normally buried numerous feet (one meter or more) underground. When metal pipes are used to carry drinking water, they are normally lined with plastic or cement inside to prevent rust. The exterior of the steel pipelines is also coated with asphalt products and wrapped with special tape to minimize corrosion due to exposure to particular soils. - Oil Line Pipe There are two types of oil pipeline: petroleum pipeline and product pipeline. While the former brings petroleum to refineries, the latter transports fine-tuned items such as gas, kerosene, jet fuel, and heating oil from refineries to the marketplace. Different grades of crude oil or various refined products are generally carried through the exact same pipeline in different batches. Blending in between batches is small and can be managed. - Gas Line Pipe Essentially all overland gas is transported by pipeline. The majority of other nations worldwide likewise use gas and have gas pipelines. - Line Pipe for Carrying Other Fluids Pipelines have been built to bring lots of other liquids. Liquid fertilizers, for example, are typically carried cross countries by pipeline. Liquefied natural gas (LNG) transported by ships (tankers) also needs short pipelines to connect ships to onshore tank. On a smaller sized scale, many chemicals, food, and pharmaceutical plants utilize pipes to carry numerous liquids and gases within the plant.

LINE PIPE COATINGS

- Fusion Bonded Epoxy (FBE) Coating

FBE has excellent adhesion to the pipeline surface, good corrosion resistance to chemical media, good temperature resistance, excellent corrosion resistance, cathodic peel resistance, aging resistance, and resistance to soil stress, among other properties. It operates over a wide temperature range (standard FBE operates between -30°C and 100°C), making it suitable for most soil environments and directional drilling through clay soils.

- Three Layers Polyethylene (3PE) Coating

Three-layer polyethylene (3PE) anticorrosive coating combines the advantages of epoxy powder FBE and two-layer PE coating to overcome the disadvantages of each anticorrosive process. The primary anticorrosive agent is FBE. PE is primarily used to protect FBE from mechanical damage and has a high resistance to water penetration. The three-layer polyethylene coating system provides superior mechanical properties that match the coating material’s properties, and the coating can withstand temperatures of up to 50°C (low density and medium density polyethylene) or 70°C (high density polyethylene).

- Three Layers Polypropylene (3PP) Coating

The three-layer polypropylene anticorrosive coating (3PP) consists of a base layer of epoxy powder, an intermediate layer of binder, and an outer layer of polypropylene (PP) jacket. The 3PP incorporates all the advantages of 3PE and significantly improves its operating temperature performance. 3PP coating is primarily used as an anticorrosive pipeline layer for conveying medium with a high temperature and as a pipeline anticorrosive layer in desert areas with a high surface temperature and a prolonged period of sunshine.

- Epoxy Coal Pitch Anticorrosion Coating

Epoxy Coal Pitch Anticorrosion Coating made of epoxy resin, coal tar asphalt, and filler is reinforced with glass cloth on the surface of the pipeline pipe to form an anti-corrosion layer, which is frequently used to protect the exterior wall of the pipes from corrosion.

- Silicone Anticorrosion Coating

Silicone anticorrosion layer, hard silicon calcium tile insulation layer, galvanized iron wire reinforcement layer, aluminum silicate fiber cloth waterproof layer, steel sleeve, and titanium aluminum alloy and silicone coating surfaces. Silicone resin, ceramic powder, talcum powder, mica powder, aluminum oxide powder, and titanate coating curing are used to create the silicone anticorrosion layer. With anti-corrosion, heat preservation, waterproofing, and external protection capabilities, its silicone anticorrosion layer can withstand temperatures up to 600°C, making it suitable for transporting 550°C high temperature medium insulation pipeline.

- Internal Coating

It is primarily classified into two types according to the transmission medium: one is used to reduce friction between the pipeline transmission medium and the pipeline pipe’s inner wall, referred to as “internal resistance reduction coating.” The drag-reducing inner coating can increase the fluidity of the conveying medium, allowing for the elimination of pressure stations and a decrease in pipeline investment. The other is to prevent the conveying medium from corroding the inner wall of the steel pipe, which requires a layer of anti-corrosion coating referred to as “internal anti-corrosion coating.” Inner coatings that are resistant to corrosion can increase pipeline safety and extend the life of the pipeline. Inner coatings with varying properties are available for use in water delivery and other chemical environments.

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