Anti-corrosion Steel Pipe

First layer is high performance fusion bonded epoxy (FBE>100um),

Mild layer is copolymer adhesive(AD:170～250um) ,

Outer layer is polyethylene coating(PE:1.8～3.7mm).
FBE provides excellent adhesion to pipebody, providing superior long-term corrosion resistance and protection of pipelines.
Copolymer adhesive provides good bonding to the FBE and polyethlene layers.
PE coating provides physical protection to the pipeline.

3LPE pipes are generally used as underground buried pipeline for water, oil and gas.
DIN30670
AS4321
IS3581
GB/T23257

【Product Features】

Anti-corrosion
Anti-corrosion steel pipe adopts a composite anti-corrosion structure of double-layer fused epoxy powder (FBE) and three-layer polyethylene (3PE). The thickness of the inner epoxy layer reaches 300μm, and the thickness of the outer polyethylene layer reaches 2.5mm, which effectively blocks the penetration of moisture, oxygen and chemical media. The steel pipe can be used stably for more than 30 years in salt spray, acid and alkali environments. Compared with ordinary single-layer anti-corrosion coated steel pipes, the life span is increased by about 2.5 times.

High Temperature Resistance
Anti-corrosion steel pipe uses modified epoxy powder and high-temperature resistant polyethylene materials. The long-term temperature resistance range is -40℃ to +80℃, and it can withstand +120℃ for a short time. In high temperature environment, the coating does not flow, bubble or peel off.

【Product Application】

Oil And Gas Extraction And Transportation
In the oil and gas industry, anti-corrosion steel pipe is mainly used for oil and gas field gathering pipelines and long-distance transmission pipelines.

Urban Water Supply And Drainage System
In the field of urban water supply and drainage, anti-corrosion steel pipe is used as a main water pipeline and drainage pipeline to effectively prevent acid and alkali substances and microbial corrosion in the water.

Chemical Industry Pipelines
In the chemical industry, anti-corrosion steel pipe is used to transport highly corrosive chemical raw materials and products.

Marine Engineering Construction
In the marine environment, anti-corrosion steel pipe is used for offshore platform pile foundations, submarine oil and gas pipelines, etc.

Sewage Treatment Engineering
In sewage treatment plants, anti-corrosion steel pipe is used to transport sewage and corrosive chemicals before and after treatment.

【Frequently Asked Questions】

What are the main types of anti-corrosion steel pipe?
Anti-corrosion steel pipe mainly includes epoxy coal tar anti-corrosion steel pipe, polyurethane insulation anti-corrosion steel pipe, 3PE anti-corrosion steel pipe, etc.

What is the anti-corrosion principle of anti-corrosion steel pipe?
Anti-corrosion steel pipe is coated with an anti-corrosion layer on the surface of the steel pipe to isolate oxygen, water and corrosive media from contacting the steel pipe matrix, thereby preventing electrochemical corrosion and chemical corrosion.

How to detect the quality of the anti-corrosion layer of anti-corrosion steel pipe?
The integrity of the anti-corrosion layer of anti-corrosion steel pipe can be detected by an electric spark leak detector to check whether there are pinholes; the thickness of the anti-corrosion layer can be measured with a coating thickness gauge; adhesion tests and impact resistance tests can also be performed to ensure that the quality of the anti-corrosion layer meets the standards.

What is the production process of anti-corrosion steel pipe?
The production process of anti-corrosion steel pipe includes steel pipe pretreatment (rust removal, oil removal), coating of anti-corrosion materials (spraying, winding and other processes), curing or cooling and quality inspection (appearance, thickness, performance).

What issues should be paid attention to during the construction of anti-corrosion steel pipe?
During construction, the surface of the anti-corrosion steel pipe should be kept clean and dry, and the anti-corrosion layer should be coated strictly according to the process requirements; pay attention to the influence of ambient temperature and humidity on the curing of the anti-corrosion layer; avoid damage to the anti-corrosion layer during transportation and installation, and repair it in time.

What role does anti-corrosion steel pipe play in natural gas transportation?
In natural gas transportation, anti-corrosion steel pipe can prevent steel pipes from being corroded by moisture, hydrogen sulfide, etc. in natural gas, ensure the sealing and integrity of the pipeline, and avoid natural gas leakage.

How to protect anti-corrosion steel pipe during transportation?
When transporting anti-corrosion steel pipe, avoid scratching the coating, use soft materials to wrap or cushion, and fix the steel pipe to prevent collision. Use special lifting equipment during loading and unloading, and it is strictly forbidden to directly tie the wire rope to prevent damage to the coating.

What precautions should be taken during the installation of anti-corrosion steel pipe?
When installing anti-corrosion steel pipe, avoid strong assembly to prevent the coating from cracking under stress; the welding parts should be cleaned, rusted and re-coated with anti-corrosion layer in time after welding; take protective measures when crossing obstacles to prevent the coating from being scratched by sharp objects.

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