3PE Coated Anti-Corrosion Steel Pipe LSAW/SSAW/ERW Spiral Steel Pipe for Underground Oil and Gas Pipelines

• Customization: Available
• Compound Material: Steel Plastic Composite Pipe
• Material: PEX-Al-PEX, Carbon Steel
• Model NO.: DH-FFGG-3PE
• Installation and Connection: Welding/Socket/Flange
• Technology of Plastic Composite Pipe: Internal and External Coating
• Base Pipe of Plastic Composite Pipe: Welded Steel Pipe
• Internal Coating Materials of Plastic Composite Pipe: Inner Epoxy Outside Three-Decker Polyethylene Steel Pipe
• Plastic Composite Pipe Coating Form: Inner and Outside Coating
• Plastic Composite Pipe Model: GS-Ep-CS-Ep
• Steel Skeleton PE Pipe Use: Municipal, Chemical, Oil Pipeline, Industrial&Municipal Water Applications
• Steel Plastic Composite Pipe Model: GS-—D-SP-T-EP(PE)
• Type: Welded
• Technique: Hot Rolled
• Surface Treatment: Antiseptical
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Connection Method: Flexible Socket Connection
• Composite Process: Inner Expoxy Outsaide Polyethylene Steel Pipe
• Coating Form: Inner and Outside Coating
• Cathodic Strippin: (65±3ºC, 48h, -1.5V) &Le
• Bending Resistan: Strengthen Level:1.5°, No Crack
• Stamping Resistan: Strengthen Level:15j, No Leakage
• Fracture Surface Interstice: 1-3 Level
• Adhesion Strength: 1-2 Level
• Anti-Scratch(20ºC±3ºC): Strengthen Level(50kg):≤500μm, No Leakage
• Transport Package: Standard Packsge
• Specification: 6m, 12m or Upon your request
• Trademark: DHPI
• Origin: Shandong, China
• HS Code: 3917330000
• Production Capacity: 50000000 Tons /Year

Product Description

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Product Description

The 3pe anti-corrosion layer(three-layer extruded polyethylene anti-corrosion layer,TPEP)on the outer surface of the steel pipe is made of fused epoxy powder(FBE) as the bottom layer,adhesive as the middle layer,and extrued polyethylene as the outer crover.It is an emerging product that solves the promble of the corrosion prevention of the inner wall of 3PE anti-corrosion steel pipes.It fills the gap of anti-corrosion of domestioc anti-corrosion steel pipes in the field of water transportion.The inner and outer epoxy resin 3PE anti-corrosion steel pipes are currently the best choice in the field of water supply pipes.

The Advantage:
1.Light Weight

Compared with the same specification of the steel pipe, the weight of the steel pipe saves 50% -150%,the pipe weight is light, reduce the construction labor intensity
2.Corrosion preventive
Fused epoxy powder coating, hot dip zinc and stainless steel, diversified selection can ensure the service life of the pipe.
3.Negative pressure resistance
To meet the negative pressure performance requirements of the pipe for gas drainage, under-0.097MPa pressure, 100h pipe without suction, deformation.
4.Low operating noise
The inner wall of the pipe is a flat wall structure, with the inner wall smooth and low noise during normal operation.
5.Strong adhesion
The selection of anti-corrosion materials are the national standard mature technology type, the use of the process does not fall off, peeling phenomenon.

Application Cases

Product Parameters

Nominal Diameter/ mm	Inner Coating Layer /mm	Outer coating layer,mm
		Ordinary level	Strengthen level
DN ≤65	>0.3	>0.6	>0.8
65≤DN≤150	>0.35	>0.8	>1.0
150≤DN≤300	>0.35	>0.8	>1.2
300≤DN≤800	>0.4	>1.0	>1.3
800≤DN≤1200	>0.45	>1.2	>1.8
1200≤DN≤3600	>0.45	>1.5	>1.8

Note: can be customized as customer's needs.

Production Process

The three-layer polyethylene anti-corrosion steel pipe combines the advantages of fused epoxy powder and polyolefin coating, overcomes the lack of performance of the two coatings when used alone, and is coated to the surface of the steel pipe by spraying, winding and other processes to achieve the purpose of anti-corrosion.
 

 

Connection Method

In order to adapt to the needs of different project characteristics, Donghong develops a variety of connection methods for large diameter anticorrosion steel pipe, specifically flexible socket connection, butt welding, socket lap weld, spherical lap weld, customized bevel form and other forms of connection, providing a variety of choices for the major water conservancy projects, to support a variety of construction environments and construction conditions.
 

Donghong has set up a high-pressure pipe fittings factory, which produces pipe fittings of large caliber and high pressure for national key projects, and also helps customers customize special pipe fittings according to customer requirements and industrial and mining conditions, realizing the manufacturing concept of "good connection makes good system".

Welding Connection

Mechanical Connection

Socket Connection

Company Profile

About Us
Shandong Donghong Pipe Industry Co., Ltd. (referred to as: Donghong Co., Ltd., stock code: 603856) is headquartered in Qufu, China, the hometown of Confucius.Is an engineering pipeline manufacturer, pipeline engineering service provider and pipeline engineering general contractor with the main business of four categories of functional and customized pipelines: special pipelines for rainwater and sewage diversion, special pipelines for municipal areas, special pipelines for industrial and mining areas, and special pipelines for national key engineering projects. The company has built up an industrial ecosystem with the participation of design institutes, financial institutions,  port logistics, construction units, upstream and downstream enterprises, etc. The company is committed to becoming a global leading pipeline system comprehensive solution provider by making intelligent pipelines change human life and constant safety of pipeline transportation.

Steel-plastic composite special pipeline core technology is pipeline anti-corrosion technology, anti-corrosion technology
Good, long service life of the pipeline, Donghong specializes in research and development of anti-corrosion technology and anti-corrosion materials, according to different application environments for customers to customize anti-corrosion solutions to adapt to the buried, non-excavation hauling, pipe jacking and open-air application of different working conditions such as the demand for a variety of corrosion solutions and anti-corrosion technology that we can provide.
In 2021, become the enterprise with the largest variety of powder anti-corrosion processes in the industry, with a total of 14 production lines of internal epoxy and external PE, internal and external epoxy and 3PE, with anti-corrosion processing technologies such as suction coating, spraying, roller coating, dip coating, and spraying.

Adhering to the concept of "good materials make good pipes, good connections make good systems", Donghong independently researches and develops a variety of high-quality materials with intellectual property rights, including adhesive resins, heat fusion bonded epoxy powders, weather-resistant powders, special materials for 3PE, special materials for 3PP, etc. These anticorrosive materials are the core technology of Donghong to ensure the quality of the pipeline, and they provide a guarantee of the quality of the long-life large-caliber steel-plastic composite pipes and a good competitiveness in the market.

In 2021, become the enterprise with the largest variety of powder anti-corrosion processes in the industry, with a total of 14 production lines of internal epoxy and external PE, internal and external epoxy and 3PE, with anti-corrosion processing technologies such as suction coating, spraying, roller coating, dip coating, and spraying.

Certifications

Packaging & Shipping

Donghong has established strategic partnerships with more than 5 5A-level logistics companies, and we have many years of transportation experience. Combining automobile transportation, railway transportation, port and shipping logistics, etc., no matter the heat or cold, no matter the area is remote or harsh, we can provide you with the best service. We have a comprehensive transportation strategy to ensure that every shipment is delivered to the customer site as soon as possible.

FAQ

1. Is your product meets the international standard ?
Our products have pass CE, BV, ISO and wars certificate, and all figures indicates higher than standard, you can feel free to let us know which national standard you required, we will check or test it for you.

2. What kind of service do you offer ?
As a manufacture fatory, we provide pipe products, pipe fittings, package and shipping; as a professional consulation company we provide project consulting advise, pipe system solutions and design suggestions; as an engineering focused enterprise , we also provide pipeline contractor service and pipe repair service, also can give free maintance guidance.

3. Do you support OEM/ODM service?
Yes, we offer customization in material, specification, logo, package , connection methods andothers. Meanwhile, our professional team can offer solution suggestion for your specified projects, we have successfull cases of that service.

4. What's your terms of payment?
T/T or L/C at sight.

5. How can you gurantee the goods you offered is qualified?
We warmly welcome all customers arrange the visit to our company and see our goods in sight, we can also provide strict test as per customer required before order. Meanwhile, before the bulk production, we can dispatch samples for customer to do their own tests to qualify the products.