Coated pipe

Pandapipe’s carbon steel coated tubes have a coating with excellent corrosion resistance, which can greatly increase the service life and reduce the cost of your project.

Coated Pipe

Name: Coated steel pipe
Dimensions: Outer DIA.: From 10.3 mm; NPS: From 1/8 “; DN: From 6
Thickness: SCH 5S to SCH XXS (1.65 mm and up)
Standards: API 5L, ASTM A53, JIS G3422, API 5CT, ASTM A795, etc.
Scope: Oil & Gas, Water Transmission, Solar Energy, Fire Fighting, Construction, Piling Work, etc.
Coatings: FBE, 2PP, 3PP, 2PE, 3PE, Varnishing, Oiling, Hot Dip Galvanizing.

PANDAPIPE Coated Pipe

Coated pipe typically uses a carbon steel base pipe, which is then coated with a coating material after sandblasting and other processes. These processes include electrostatic spraying, impregnation, and high-temperature curing. The coating layer is divided into inner and outer coatings, and the appropriate coating material and process are selected based on the application environment. Coated pipe is widely used in fire protection, chemical engineering, and municipal engineering.

The most commonly used coatings are epoxy coating, polyethylene coating, and 3PE coating.

The following is an introduction to the coated pipes produced by PANDAPIPE. Please contact us if you have any inquiries.

Coated Pipe Specifications

Pandapipe provides high-quality Steel Coated Pipe. The specifications of Coated Pipe include internal and external diameter, material and other aspects, which strictly follow the Coated Pipe standard. Steel pipe thickness from SCH 5S to SCH XXS (1.65 mm and above). It has a wide range of applications in solar energy, building structures, oil and gas transportation and other fields.

Dimensions	10.3mm and up		1/8″ and up		DN6 and up
Thickness	1.65mm and up
	SCH 5S – SCH XXS
Standards	API 5L	ASTM A53	JIS G 3422	DIN 30671	CAN/CSA – Z245.21	ISO DIS21809 – 1
	API 5CT	ASTM A795	DIN 30670	DIN 30678	NFA 49-710	–
Surface Coating	Varnishing, Oiling, Hot Dip Galvanizing
	FBE, 2PP, 3PP, 2PE, 3PE
Application	Oil & Gas, Water Transmission, Solar Energy, Fire Fighting, Construction, Piling Work, Mechanical Engineering, Fabrication

How is Coated Carbon Steel Pipe Made?

Inernal Coated Pipe

Exernal Coated Pipe

Coating type	Temperature range	Coating thickness	Suitability	Main application
‌FBE‌	-30°C ~ 100°C	250-500 μm	Internal & External Coating	External anti-corrosion of oil/gas pipelines, internal anti-corrosion of chemical pipelines
‌2LPE‌	-40°C ~ 60°C	1.0-2.0 mm	External Coating	Low pressure water pipelines, municipal works
‌3LPE‌	-40°C ~ 85°C	2.0-3.5 mm	External Coating	Long-distance oil and gas pipelines, submarine pipelines
‌2LPP‌	-40°C ~ 110°C	1.5-3.0 mm	External Coating	High temperature chemical piping
‌3LPP‌	-40°C ~ 110°C	2.5-4.0 mm	External Coating	LNG pipeline, sour oil and gas transportation
Epoxy coating	-20°C ~ 120°C	0.2-0.5 mm	Inner coating (main)	Drinking water pipeline inner wall, storage tank inner anti-corrosion, food industry pipeline

What is Internal Carbon Steel Pipe Coating?

An internal coated pipe refers to a steel pipe with a protective layer applied to its inner surface. This protective layer safeguards against corrosion, abrasion or chemical damage.

They must be constructed to withstand the high impact caused by solid particles in oil and gas fluids include sodium chloride, potassium chloride, carbonates, and sulfates, partially polymerized oils such as waxes and paraffin, as well as silica, dirt, and greases.

Some of the particles disintegrate in the fluid, while others remain suspended. These particulates become fiercely corrosive missiles when they travel through pipes at speeds nearing 200 mph.

What is External Coated Steel Pipe?

An external coated pipe refers to a steel pipe that has a protective layer applied to its outer surface.
This coating is designed to shield the pipe from environmental elements such as corrosion, abrasion, soil stress, chemicals, and varying climatic conditions, thereby prolonging its durability and performance in various applications.
External coated pipes offer extended durability by resisting corrosion, abrasion, and varying climates, ensuring longevity in harsh environments, protection against chemicals, and reduced maintenance, thereby saving costs over time.

Why Carbon Steel pipe coating is important?

Steel pipe coating is critical to the design and durability of any pipeline.
The coating layer protects the carbon steel pipe from hard conditions like temperature, chemicals, pressure, abrasion.
Steel pipe coating can be done on both internal and external surfaces of the pipe using a variety of materials that range from soft metallic compounds to rigid thermoplastics.
It also can serve as an outer layer for externally laid pipelines on land or in water.

Types of Coated Pipes

FBE Coated Pipe

The Fusion Bonded Epoxy (FBE) coating prevents corrosion on pipe surfaces. Double or triple layers of FBE may even improve friction and abrasion resistance. In 3-layer PE/PP coating systems, pipe FBE coating is also employed as the priming layer.

At temperatures ranging from 220 to 235°C, the electrostatic epoxy powder is sprayed onto a pipe. When the epoxy powder reaches the hot pipe surface, it melts and forms a uniform layer of epoxy coating on the pipe.

Dual Layer FBE Coated Pipe

Dual-layer FBE is used for a variety of service applications, including directional drilling, anti-abrasion for road and river crossings, and oil, gas, and waterworks pipes.

This coating, like single layer FBE (above), can be applied on a wide range of outer diameter (OD) sizes, from 3.5″ to 48″. In most situations, the top layer of abrasion resistance protects against erosion.

2LPE Coated Pipe

Two-layer extruded polyethylene coating (2LPE) refers to two layers of pipeline protection.

Mastic-based adhesives and polyethylene copolymers are used in the two-layer construction.

This provides excellent corrosion prevention, especially at high temperatures.

2LPP Coated Pipe

The 2LPP System is a multi-layer powder coating system made up of two functional components.

This anti-corrosion system is made up of a layer of polypropylene followed by a coating of high-performance fusion-bonded epoxy (FBE).

3PE Coated Pipe

To solve the disadvantages of each anti-corrosive procedure, the three-layer polyethylene (3PE) anti-corrosive coating combines the properties of epoxy powder FBE and two-layer PE coating.

The principal anti-corrosive agent is FBE. PE primarily protects FBE (mechanical damage resistance) and has excellent water penetration resistance.

The three-layer polyethylene coating method provides outstanding mechanical qualities to satisfy the coating material’s properties, and the coating can operate at temperatures as high as 50°C (low density and medium density POLYETHYLENE) or 70°C (high-density POLYETHYLENE) (high-density polyethylene).

3PP Coated Pipe

A bottom layer of epoxy powder, an intermediate layer of binder, and an outside LAYER of PP (polypropylene) jacket comprise the three-layer polypropylene (3PP) anti-corrosive coating.

The 3PP incorporates all of the benefits of the 3PE while significantly improving its temperature performance in service.

3PP coating is mostly utilized as an anti-corrosion pipeline for transporting high-temperature media and as a pipeline anti-corrosion layer in desert locations with high surface temperatures and lengthy sunshine duration.

As a result, subterranean water, gas, and oil pipelines have become increasingly popular in places with high surface temperatures and long daylight duration.

FAQs：

What coating should be used for steel pipe leakage?

To solve the problem of steel pipe leakage, you can choose epoxy resin coating (high strength, corrosion resistance, good sealing), 3PE coating (consisting of hot melt adhesive layer, polyethylene middle layer and surface lipid layer), fluorocarbon paint (suitable for black pipes or galvanized pipes)

Can a black steel pipe be painted?

Yes, but you need to remove the oil and rust on the surface and grind it to a rough surface. You can choose epoxy paint, polyurethane paint or acrylic water-based paint. However, you cannot use latex paint containing alkaline ingredients, metal paint containing copper pigments or ordinary alkyd paint.

What is the difference between lining and coating?

Lining is the material laid on the inner wall of the pipe, which is usually thicker. Coating is the material applied to the surface of the pipe, which is usually thinner. In general, lining focuses on internal structural protection, while coating is mainly used for surface functional protection.