Steel Pipes Used as Casing or Tubing for Wells in Petroleum and Natural Gas Industries

Product Description

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Antistaic Flame Redartant Composite Pipe for Mining	Anti-corrosion Composite Pipe	Thermal Insulated Pipe	Big Carliber Composite Steel Pipe

Product Description
Transportation: Pipes are crucial for transporting oil, gas, and related products over long distances. Large-diameter pipelines, known as transmission pipelines, are used to transport crude oil, natural gas, and refined products from production fields to refineries, processing plants, and distribution centers.
Epoxy & Plastic coated anti-corrosion steel pipe can adopt a variety of anticorrosive solutions to meet the needs of different working conditions. Applicable to buried, trenchless traction, pipe jacking and open-air applications and other environmental conditions, the following anti-corrosion solutions can be used respectively:
- Burried:inner epoxy outer PE,inner epoxy outer 3PE,inner epoxy outer 3PP,inner & outer epoxy coated
- Pipe Jacking:inner epoxy outer 3PE,inner epoxy outer3PP,inner epoxy outer double layer epoxy
- Trenchless traction:inner epoxy outer 3PE,inner epoxy outer 3PP,inner epoxy outer double layer epoxy
- Open-air application:inner epoxy outer anti-uv coated
Inner epoxy resin outer polyethylene coating composite steel pipe is a pre-treated steel pipe as the base pipe, pipe heating in its inner surface coated with fusion bonded epoxy powder, the outer surface of the polyethylene powder coated with a corrosion-resistant steel-plastic composite products made of performance.
Connection Method

Clamp Connection

Flange Connection

Product Features

Good compatibility, convenient connection
The inner and outer layers of the double-layer epoxy are epoxy resin coating based on epoxy resin, and the compatibility of the two is good. The solvent-free epoxy coating is used for patenting, which has good compatibility and excellent corrosion resistance. Good cathodic protection
The double-layer epoxy coating has good compatibility with the cathodic protection and will not shield the cathodic protGood flexibility and resistance to bending
The coating material is made of epoxy resin with high molecular weight, which has good flexibility and excellent bendingScratch Resistance
The outer layer is modified epoxy coating with special scratch material, which has excellent scratch resistance. High Temperature Resistant
Double-layer epoxy anticorrosive steel pipe can withstand a maximum temperature of 110ºC.

Product Advantages

1. The caliber range is DN50 ~ DN3600, the pipe length is 6 - 16m per piece
2. 2 powder coating production lines, 12 twin-screw extruders, , with perfect powder coating, polyethylene material modification R & D production capacity
3. The largest variety of powder anticorrosion process manufacturers, with: suction coating, spraying, rolling coating, dip coating and other methods.
4. The only one in the country set large-caliber steel pipe, anti-corrosion processing, anti-corrosion materials allproduced in one enterprise.
5. Safety reliability of socket type anti-corrosion steel .

Product Specification

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.

Appliation Cases
Certifications
Company Profile
Production Technology

Uniform Plastic Coating

Comprehensive Automative Line

High Quality Steel Roll

Biggest 3600 Production Line

CNAS Labratory

One-code track

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.
Donghong has more than 200 R&D personnel and more than 100 patents. Relying on national enterprise technology center, national CNAS laboratory, academician expert workstation, post-doctoral workstation and other national technology R&D platforms, Donghong deepens the research on digitalization, informatization and intelligentization of pipeline engineering and leads the development of engineering pipeline industry. Relying on national technology research and development platforms such as National Enterprise Technology Center, National CNAS Laboratory, Academician Expert Workstation, Post-doctoral Workstation, etc., Donghong deepens the research on the digitization, informatization and intelligence of pipeline engineering, leads the development of engineering pipeline industry, and serves the national key strategic projects and people's livelihood projects, such as South-to-North Water Diversion, Huangzhilin, Hanzhiwei, Beijing-New Zealand Expressway, One Belt, One Road, standardized farmland, urban and rural water supply integration, Liren gas, centralized heat supply, etc. The company has been engaged in national key strategic projects and people's livelihood projects.
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.

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