Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of high-performance 3pe coated steel pipe with strong corrosion resistance in China. Welcome to buy discount high-performance 3pe coated steel pipe with strong corrosion resistance made in China here from our factory. Quality products and low price are available.
Product introduction
Product Description
High-performance 3PE Coated Steel Pipe with Strong Corrosion Resistance is a premium anti-corrosion steel pipe integrated with high-strength base pipe and professional three-layer polyethylene (3PE) coating, specially designed for corrosion-prone environments such as buried pipelines, chemical transmission, municipal infrastructure, oil and gas transportation, and industrial fluid conveyance. Manufactured in strict compliance with SY/T 0413, GB/T 23257, ISO 21809-1, API 5L, DIN 30670 international standards, the base pipe adopts high-quality ERW, LSAW or seamless steel pipes, and the surface is coated with a three-layer composite anti-corrosion structure (epoxy powder primer + adhesive layer + high-density polyethylene topcoat) via high-temperature fusion bonding technology. With outstanding corrosion resistance, excellent mechanical impact resistance, low water permeability and strong adhesion, this pipe can effectively isolate the steel substrate from corrosive media such as soil, groundwater, salt-alkali, and chemical reagents, ensuring long-term stable operation. Widely used in oil and gas transmission pipelines, municipal water supply and drainage, chemical medium conveyance, and cross-regional infrastructure projects, it provides a reliable, durable and cost-effective anti-corrosion piping solution for global industrial and municipal fields.
Basic Product Specifications
Product Name: High-performance 3PE Coated Steel Pipe with Strong Corrosion Resistance
Executive Standard: SY/T 0413-2017, GB/T 23257-2017, ISO 21809-1, API 5L, DIN 30670, GB/T 9711
Base Pipe Process: ERW (Electric Resistance Welding) / LSAW (Submerged Arc Welding) / Seamless Steel Pipe
3PE Coating Structure: Three-Layer Polyethylene Composite Coating
1st Layer (Primer): Epoxy powder (80–120 μm), strong adhesion to steel pipe surface
2nd Layer (Adhesive): Copolymer adhesive (170–250 μm), bonds primer and topcoat tightly
3rd Layer (Topcoat): High-density polyethylene (2.0–4.0 mm), excellent corrosion and impact resistance
Steel Grade: API 5L X42, X52, X60, X70; Q235B, Q355B, S355JR
Outer Diameter (OD): 21.3mm – 1820mm, DN25–DN1800 customizable
Wall Thickness (WT): 3mm – 30mm, heavy-wall up to 40mm for high-pressure corrosion-prone projects
Standard Length: 6m, 9m, 12m, custom fixed lengths available
Delivery Condition: Stress-relieved base pipe + fully coated 3PE anti-corrosion layer, pickled and passivated inner surface (optional)
Surface Finish: Black 3PE anti-corrosion outer coating; inner surface: plain, epoxy coating or cement mortar lining (customizable)
Pipe End: 30°–45° beveled ends for on-site welding; plain/flanged/threaded ends optional; pipe ends with anti-corrosion edge sealing
Application: Buried oil & gas transmission pipelines, chemical medium conveyance, municipal water supply and drainage, industrial fluid pipelines, coastal infrastructure, cross-regional water conveyance projects
Product Performance & 3PE Coating Advantages
Strong Corrosion Resistance (Core Advantage): The 3PE composite coating integrates the corrosion resistance of epoxy powder and polyethylene, effectively resisting soil corrosion, groundwater erosion, salt-alkali corrosion, chemical reagent erosion and microbial corrosion. It can adapt to harsh corrosion environments such as coastal areas, chemical industrial zones and saline-alkali land, with a service life of up to 50 years.
High-Performance Base Pipe: Selected high-strength steel grades have excellent mechanical properties, high yield strength and tensile strength, adapting to high-pressure conveyance and complex geological conditions. API 5L X series steel pipes are suitable for oil and gas high-pressure transmission, while Q355B is ideal for municipal and industrial general fluid pipelines, balancing performance and cost-effectiveness.
Excellent Coating Performance: The 3PE coating is integrally bonded with the steel pipe via high-temperature fusion, with no peeling or cracking. It has strong impact resistance, scratch resistance and low water permeability, effectively avoiding corrosion caused by coating damage during transportation and installation. The coating also has good weather resistance, adapting to outdoor and long-term buried service.
Good Compatibility: Perfectly compatible with cathodic protection systems, forming double anti-corrosion protection to further enhance the service life of the pipeline. Strict dimensional tolerance ensures seamless connection with standard fittings, improving on-site construction efficiency.
Dimensional & Coating Tolerance
|
Item |
Tolerance |
|
Outer Diameter |
±0.75% of nominal OD |
|
Wall Thickness |
+15% / −12.5% of nominal WT |
|
Out‑of‑Roundness |
≤1.0% of outer diameter |
|
Straightness |
≤1.5 mm per meter |
|
3PE Coating Thickness |
2.0–4.0 mm (strictly compliant with standard requirements) |
|
Length |
+150 mm / −0 mm |
Mechanical Properties (Base Pipe)
|
Property |
Q355B |
API 5L X60 |
API 5L X70 |
|
Minimum Yield Strength |
≥355 MPa |
≥415 MPa |
≥483 MPa |
|
Tensile Strength |
470–630 MPa |
520–760 MPa |
570–760 MPa |
|
Elongation |
≥21% |
≥20% |
≥18% |
|
Hydrostatic Test |
100% tested at 1.5× working pressure |
100% tested at 1.5× working pressure |
100% tested at 1.5× working pressure |
|
Charpy Impact (‑20℃) |
≥27 J |
≥34 J |
≥40 J |
Note: Low-temperature impact test is mandatory for pipelines used in alpine and cold regions. 3PE coating must pass strict tests including spark leak detection, peel strength, impact resistance and cathodic disbondment to ensure corrosion resistance performance. For chemical corrosion-prone environments, additional corrosion resistance tests can be provided.
Chemical Composition (Max. %)
|
Element |
C |
Mn |
P |
S |
Si |
|
Q355B |
≤0.22 |
≤1.60 |
≤0.030 |
≤0.030 |
≤0.55 |
|
X60 |
≤0.26 |
≤1.40 |
≤0.025 |
≤0.015 |
≤0.45 |
|
X70 |
≤0.24 |
≤1.60 |
≤0.020 |
≤0.010 |
≤0.45 |
Residual elements: Cu ≤0.30%, Ni ≤0.30%, Cr ≤0.30%, Mo ≤0.15%. Strict low-sulfur and low-phosphorus control improves the pipe's resistance to hydrogen-induced cracking (HIC) and sulfide stress corrosion cracking (SSC), making it suitable for corrosion-prone environments such as chemical and oil and gas fields.
Manufacturing Process
Base Pipe Production: ERW/LSAW/seamless pipe forming, high-precision welding, post-weld stress relief treatment, non-destructive testing (NDT) and hydrostatic pressure test to ensure the base pipe's mechanical properties and leak-proof performance.
Surface Pretreatment: Shot blasting treatment to Sa2.5 grade, thoroughly removing rust, oxide scale and oil stains on the pipe surface, increasing the surface roughness and improving the adhesion between the coating and the steel pipe.
3PE Coating Construction: Adopt automatic electrostatic spraying technology to apply epoxy powder primer, then extrude and coat the adhesive layer and high-density polyethylene topcoat in sequence, and cure integrally at high temperature to ensure the coating is uniform and tightly bonded.
Coating Quality Inspection: Conduct 100% thickness testing, spark leak detection, impact resistance test and peel strength test on the 3PE coating to eliminate unqualified products.
Pipe-end Treatment: Precision beveling of pipe ends, anti-corrosion edge sealing treatment, and installation of protective caps to prevent damage to the pipe ends and coating during transportation and storage.
Marking & Finishing: Mark the product name, steel grade, size, coating thickness, standard, heat number and batch number on the pipe surface for product traceability, and finally pack and store after passing the inspection.
Product Advantages
Superior Corrosion Resistance: 3PE composite coating provides all-round protection, effectively resisting various corrosive media, suitable for long-term use in harsh corrosion environments, service life up to 50 years.
High Mechanical Strength: High-strength base pipe matches the wear-resistant 3PE coating, with strong impact resistance, pressure resistance and scratch resistance, adapting to complex transportation and installation conditions.
Stable Coating Adhesion: High-temperature fusion bonding technology ensures the coating is closely integrated with the steel pipe, no peeling or cracking, and stable performance in long-term use.
Low Operation Cost: Long service life, low maintenance frequency, no need for frequent replacement, greatly reducing the long-term operation cost of the pipeline project.
Wide Application Range: Suitable for oil and gas, chemical, municipal, industrial and other fields, covering buried, outdoor and other various installation scenarios.
Easy Installation: Strict dimensional tolerance, compatible with standard pipeline fittings, simple and efficient on-site welding and connection, improving construction efficiency.
Complete Quality Assurance: Complies with international standards, provides MTR reports and third-party inspection (SGS, BV, DNV) certificates, ensuring product quality meets project acceptance requirements.
Main Applications
Buried oil and natural gas transmission pipelines
Chemical medium and corrosive fluid conveyance pipelines
Municipal water supply and drainage pipelines
Industrial circulating water and sewage discharge pipelines
Coastal infrastructure and marine engineering pipelines
Cross-regional water conveyance and water diversion projects
Oilfield auxiliary pipelines (water injection, brine treatment)
Industrial park corrosion-prone fluid pipelines
Quality Inspection & Certification
Full-dimensional inspection of base pipe (outer diameter, wall thickness, straightness, roundness, length)
Mechanical performance tests: tensile test, bend test, low-temperature impact test, hydrostatic pressure test
100% non-destructive testing (ultrasonic testing) for base pipe welds
3PE coating special tests: spark leak detection, coating thickness test, peel strength test, impact resistance test, cathodic disbondment test
Chemical composition analysis of base pipe to verify steel grade compliance
Mill Test Report (MTR), third-party inspection certificates (SGS, BV, DNV) available
Packaging & Delivery
Packaging: The outer surface is wrapped with PE film to protect the 3PE coating, bundled with heavy-duty steel strips, wrapped with waterproof and anti-collision woven cloth, and the pipe ends are equipped with plastic/steel protective caps to avoid damage during transportation.
Marking: High-performance 3PE Coated Steel Pipe, steel grade, size, coating thickness, executive standard, heat number, batch number, production date.
Trade Terms: FOB, CIF, CFR, DAP, DDU (supporting global project delivery requirements)
Shipping Ports: Tianjin, Qingdao, Shanghai, Ningbo (major coastal ports with professional loading equipment)
Customization: Customizable steel grade, outer diameter, wall thickness, 3PE coating thickness, pipe length and pipe end form to meet specific project requirements.
Contact Us
For quotation, stock availability, delivery schedule and customized anti-corrosion solutions of High-performance 3PE Coated Steel Pipe with Strong Corrosion Resistance, please contact our sales team. We have rich experience in providing corrosion-resistant pipeline solutions for global industrial and municipal projects, and can provide professional technical support for on-site installation, welding and coating maintenance to ensure the safe and stable operation of your pipeline system.
About us
Hebei Huayang Steel Pipe Co., Ltd. was founded in 2005, with a registered capital of 500 million yuan. The company covers an area of more than 1,000 mu, with annual sales of 10 billion yuan, more than 600 employees and an annual productivity of 2.75 million tons. The company has 17 new automatic steel pipe production lines and 14 high-frequency production lines, with a diameter of 73-660 mm; Three double-sided submerged arc welded steel pipe production lines with diameters of 406.4-1422.4mm;; 24 hot tube expanding production lines, with a diameter of 230-820mm; Two anticorrosion steel pipe production lines with a diameter of 73-1626 mm; 2 automatic painting production lines. With 3 branches and 5 offices, the products are sold to various cities and exported to more than 80 countries such as Southeast Asia, Middle East, Europe and America.
Packaging, transportation and delivery
Packaging, transportation and delivery
At Hebei Huayang Steel Pipe Co., Ltd., we apply standardized and reliable packaging solutions for all our steel pipe products. Our pipes can be securely packed by hexagonal bundling or circular bundling according to product diameter, wall thickness and customer requirements. Each pipe end is protected with high‑strength plastic pipe caps to avoid collision damage, dust and moisture during transportation and storage. The whole bundle is firmly wrapped with durable woven bags to enhance stability and prevent scratches or deformation.
We support a complete range of transportation methods to satisfy global customers, including road transportation, railway transportation, sea freight and container shipping. Based on our strategic location in Cangzhou, Hebei Province, we enjoy convenient access to major ports such as Tianjin Port, which greatly improves logistics efficiency and reduces transportation costs.
For standard specifications and normal order quantities, the general delivery time is about 30 days after order confirmation and deposit receipt. For large‑scale orders, special sizes or customized processing requirements, our production and sales team will formulate a detailed production plan and provide an accurate delivery schedule accordingly to ensure on‑time supply and stable performance for projects and clients worldwide.
Strict quality control
1. During and after the production, experienced quality inspectors randomly check the products to ensure that each steel pipe is qualified for production and application.
2. A nationally recognized laboratory with CNAS certification and certification by French Classification Society.
3. Have CNOOC access certificate, KOC oil company access network, ADNOC Abu Dhabi oil company access network, Petrobras access network, etc.
4. Accept the inspection by the third party designated/paid by the buyer, such as SGS and BV.
Certifications
API 2B
API 5L
GOST
ISO 9001
EN 10219
EN 10210
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