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Standard 3PE Anti-Corrosion Steel Pipe for Buried Pipeline Protection

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Standard 3PE Anti-corrosion Steel Pipe

Product Overview

Standard 3PE anti-corrosion steel pipes employ a three-layer structure: a bottom layer of fusion-bonded epoxy powder (FBE), a middle layer of adhesive, and an outer layer of polyethylene (PE). It is the most widely used anti-corrosion solution for buried steel pipes, offering resistance to soil, moisture, and general chemical corrosion. It conforms to DIN 30670 and GB/T 23257 standards.

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Product Details

Product Advantages

Cost-effective – Provides balanced performance for most buried applications.

Excellent adhesion – the FBE layer bonds firmly to the steel pipe substrate.

High mechanical strength – The PE outer layer is highly resistant to damage during loading, unloading and backfilling.

Internationally recognized – Meets international standards, facilitating project approval.

Coating grade can be customized – choose between standard or enhanced grade depending on soil corrosivity.

Application Areas

Water supply and sewage pipelines – municipal and industrial pipeline networks.

Pipes for structural piles – building foundations, bridge pipe piles.

General industrial pipelines – cooling water, fire-fighting water, etc.

Irrigation system – buried agricultural water pipeline.

Low-pressure oil and gas gathering and transmission pipelines – not suitable for long-distance high-pressure trunk lines.

Technical parameters

Parameters

Standard 3PE anti-corrosion steel pipe

Coating structure

Three layers: Fusion-bonded epoxy powder (FBE) + adhesive (AD) + polyethylene (PE)

Coating thickness

FBE ≥120μm, AD ≥170um, PE ≥2.5mm

Adhesion (20℃)

≥50 N/10mm

Cathode stripping (65℃, 48h)

≤8mm

Impact resistance

≥5 J/mm (20℃)

Operating temperature range

-40°C to +70°C

Implementation Standards

DIN30670, GB/T23257, SY/T0413

Steel pipe substrate type

Seamless steel pipe, ERW straight seam welded pipe, LSAW straight seam submerged arc welded pipe, SSAW spiral welded pipe

Pipe diameter range

DN20~DN1400

Wall thickness range

2.0 mm ~ 25 mm

Coating grade options

Normal or Reinforced

Additional features

Economical and efficient

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Product Name

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Standard 3PE Anti-corrosion Steel Pipe

Standard 3PE Anti-corrosion Steel Pipe

Standard 3PE anti-corrosion steel pipes employ a three-layer structure: a bottom layer of fusion-bonded epoxy powder (FBE), a middle layer of adhesive, and an outer layer of polyethylene (PE). It is the most widely used anti-corrosion solution for buried steel pipes, offering resistance to soil, moisture, and general chemical corrosion. It conforms to DIN 30670 and GB/T 23257 standards.

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Designed specifically for highly corrosive environments and harsh operating conditions, it employs a three-layer composite structure: a bottom layer of high-performance epoxy powder (FBE), a middle layer of copolymer adhesive, and an outer layer of high-density polyethylene (HDPE); significantly improving cathodic disbondment resistance, impact resistance, and long-term corrosion protection life. It complies with ISO 21809-2, API RP 5L2, and SY/T 0413 standards, and is suitable for marine environments, acidic soils, permafrost regions, and high-pressure long-distance pipelines.

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