Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of 3pe anti-corrosion steel pipe for long-distance pipeline in China. Welcome to buy discount 3pe anti-corrosion steel pipe for long-distance pipeline made in China here from our factory. Quality products and low price are available.
Product introduction
Product Description
3PE Anti‑corrosion Steel Pipe for Long‑distance Pipeline is a high‑performance three‑layer polyethylene anti‑corrosion steel pipe specially developed for long‑distance oil, natural gas, water, chemical medium transmission trunk pipelines, cross‑regional energy pipelines, and buried long‑distance transportation projects. Manufactured strictly in accordance with GB/T 23257, SY/T 0413, DIN 30670, ISO 21809‑1, API 5L standards, the base pipe adopts ERW, LSAW and seamless steel pipes of API 5L X42‑X80, Q235B, Q355B grades. The outer surface is coated with three‑layer polyethylene anti‑corrosion structure (epoxy powder primer + adhesive layer + polyethylene topcoat) through high‑temperature fusion bonding technology. Featuring excellent soil corrosion resistance, high mechanical impact resistance, low water permeability, stable cathodic protection compatibility and long service life, it effectively isolates the steel pipe from underground corrosive media. Widely used in national long‑distance energy pipelines, cross‑provincial water conveyance projects, trans‑regional chemical pipeline transportation, it provides safe, stable and long‑term anti‑corrosion solutions for global long‑distance buried pipeline engineering.
Basic Product Specifications
Product Name: 3PE Anti‑corrosion Steel Pipe for Long‑distance Pipeline
Executive Standard: SY/T 0413‑2017, GB/T 23257‑2017, DIN 30670, ISO 21809‑1, API 5L, GB/T 9711
Base Pipe Process: ERW / LSAW / Seamless steel pipe
Anti‑corrosion Structure: 3‑Layer Polyethylene (3PE)
1st layer: Epoxy powder primer (80–120 μm)
2nd layer: Adhesive copolymer layer (170–250 μm)
3rd layer: High‑density polyethylene topcoat (2.0–4.0 mm)
Steel Grade: API 5L X42, X52, X60, X70, X80; Q235B, Q355B, S355JR
Outer Diameter (OD): 219mm – 1820mm, DN200‑DN1800 customizable
Wall Thickness (WT): 6mm – 30mm, heavy‑wall up to 40mm for high‑pressure long‑distance gas pipelines
Standard Length: 12m, custom fixed lengths available
Delivery Condition: Stress‑relieved base pipe + fully coated 3PE anti‑corrosion layer
Surface Finish: Black 3PE anti‑corrosion outer coating; internal plain or epoxy coating
Pipe End: 30°‑45° beveled ends for field girth welding; pipe ends protected with anti‑corrosion edge sealing
Application: Long‑distance oil & natural gas trunk pipelines, cross‑regional water conveyance pipelines, chemical medium long‑distance transportation, buried energy pipelines, trans‑border pipeline projects
Grade & Process Explanation
Base Pipe Performance for Long‑distance Pipeline: API 5L X series high‑strength pipeline steel is the mainstream material for long‑distance transmission, with high yield strength, excellent low‑temperature toughness and anti‑fatigue performance, adapting to high‑pressure long‑distance transportation and complex geological environments such as mountains, deserts and wetlands. Q355B low‑alloy steel is used for medium‑pressure water and general fluid long‑distance pipelines, with stable mechanical properties and high cost‑effectiveness.
3PE Anti‑corrosion Process Advantages: Three‑layer composite structure combines the high adhesion of epoxy powder, the transition bonding effect of adhesive layer and the excellent weather & corrosion resistance of polyethylene. Compared with single‑layer anti‑corrosion coating, 3PE has stronger impact resistance, better water‑proof permeability and longer service life. The coating is integrally bonded with the steel pipe without peeling, effectively resisting soil stress and underground sharp object damage during long‑term buried service.
Long‑distance Pipeline‑Oriented Design: Strict coating thickness and adhesion control ensure stable performance in long‑distance harsh environments. Beveled pipe ends facilitate on‑site continuous welding of long pipelines. Compatible with cathodic protection system, it forms double protection to prevent pipeline corrosion leakage. The whole pipeline has uniform anti‑corrosion performance, reducing maintenance frequency and long‑term operation cost.
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 (strict per standard) |
|
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 long‑distance pipelines in alpine and cold regions. Coating impact resistance, peel strength and cathodic disbondment test are strictly implemented.
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 design improves anti‑HIC and anti‑SSC performance for long‑distance gas pipelines.
Manufacturing Process
Base Pipe Production: ERW/LSAW/seamless pipe forming, welding, stress relief, NDT inspection and hydrostatic test.
Surface Pretreatment: Shot blasting to Sa2.5 grade, removing rust and oxide scale, improving coating adhesion.
3PE Coating Construction: Epoxy powder electrostatic spraying → adhesive layer extrusion coating → polyethylene top‑layer extrusion coating, integrated high‑temperature curing.
Coating Inspection: Thickness testing, spark leak detection, impact resistance and peel strength testing.
Pipe‑end Treatment: Beveling, anti‑corrosion edge sealing, protection cap installation.
Marking & Finishing: Standard marking for long‑distance pipeline traceability.
Product Advantages
Superior Anti‑corrosion Performance: 3‑layer composite structure resists soil, groundwater, salt‑alkali and microbial corrosion, service life up to 50 years.
High Mechanical Protection: Strong impact resistance, anti‑pressure and anti‑scratch, adapting to complex geological buried environments.
Low Permeability: Excellent water‑proof and oxygen‑isolation performance, long‑term stable anti‑corrosion effect.
Compatible with Cathodic Protection: Perfect matching with impressed current cathodic protection system for long‑distance pipeline double protection.
High‑Strength Base Pipe: API X‑grade high‑strength steel meets high‑pressure long‑distance transportation requirements.
Low Operation Cost: Long service life, less maintenance, suitable for cross‑regional large‑scale pipeline projects.
Complete Quality Certification: MTR reports, SGS/BV third‑party inspection available for national pipeline project acceptance.
Main Applications
National long‑distance natural gas and crude oil trunk pipelines
Cross‑regional water conveyance and water diversion projects
Long‑distance chemical medium and corrosive fluid transportation pipelines
Buried energy pipelines in mountainous, desert and wetland areas
Trans‑border and cross‑provincial long‑distance pipeline engineering
Urban ring‑network long‑distance gas supply pipelines
Quality Inspection & Certification
Full dimensional inspection of base pipe
Tensile, bend, low‑temperature impact and hydrostatic pressure tests
100% ultrasonic weld inspection for base pipe
3PE coating tests: spark detection, thickness, peel strength, impact resistance, cathodic disbondment test
Mill Test Report (MTR), third‑party inspection (SGS, BV, DNV) available
Packaging & Delivery
Packaging: Bundled with heavy‑duty steel strips, wrapped in anti‑collision woven cloth, plastic end caps to protect coating and beveled ends
Marking: 3PE Anti‑corrosion Steel Pipe, steel grade, size, standard, heat number, batch number, anti‑corrosion type
Trade Terms: FOB, CIF, CFR, DAP
Shipping Ports: Tianjin, Qingdao, Shanghai, Ningbo
Customization: Custom steel grade, wall thickness, coating thickness, length and pipe‑end forms supported
Contact Us
For quotation, stock availability, delivery schedule and customized anti‑corrosion solutions of 3PE Anti‑corrosion Steel Pipe for Long‑distance Pipeline, please contact our sales team. We provide high‑quality 3PE anti‑corrosion steel pipes and professional technical support for global long‑distance buried pipeline projects.
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
Hot Tags: 3pe anti-corrosion steel pipe for long-distance pipeline, China 3pe anti-corrosion steel pipe for long-distance pipeline manufacturers, suppliers, factory
