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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High-performance 3PE Anti-corrosion Steel Pipe

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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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

Standard 3PE Anti-corrosion Steel Pipe