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Plastic coated pipe

Plastic coated pipe
Plastic-coated pipes, also known as steel-plastic composite pipes, are characterized by their ability to cleverly combine the strength of steel pipes with the corrosion resistance of plastic pipes, achieving a synergistic effect of "1+1>2". They are composite pipes formed by coating one or more layers of polymer materials (such as epoxy resin EP or polyethylene PE) onto the inner and outer surfaces of a steel pipe substrate using a special process.

No. 121, Daqiao Road, Licheng District, Jinan City

Product Description
Spot warehousing
Product Inspection
Product Measurement
Customer Feedback
Parameter categoriesSpecific projectsDetailed description/numerical range
Specifications and dimensionsNominal diameter (DN)DN15 - DN1200 (or even larger)

 Small diameter (DN15-DN100): Commonly used for building water supply and fire protection

 Large diameter (DN200-DN1200): Commonly used for municipal pipeline networks and water transmission projects

Base tube typeSeamless steel pipes, straight seam welded pipes, spiral welded pipes, galvanized pipes

Select different base pipes according to pressure rating and diameter

length6m - 12m (standard length), customization available
Coating materialsEpoxy resin (EP)Color: Red (firefighting), Blue/Green (water supply)

Thickness: 150μm - 400μm (0.15-0.4mm)

Process: Internal and external electrostatic spraying, high-temperature curing

Polyethylene (PE)Color: Black, Gray

Thickness: 400μm - 1000μm (0.4-1.0mm)

Process: Hot-dip coating (fluidized bed impregnation)

Implementation StandardsWater supply/generalCJ/T 120-2016 "Plastic-Coated Composite Steel Pipes for Water Supply"

GB/T 28897-2021 "Steel-Plastic Composite Pipes"

FirefightingGB/T 5135.20 Automatic Sprinkler Systems - Part 20: Coated Steel Pipes
hygiene standardsGB/T 17219 Standard for Hygienic Safety Evaluation of Drinking Water Transmission and Distribution Equipment
Performance indicatorsCompressive strength≥ 6.0 MPa (Determined by the base pipe; the plastic coating does not reduce strength)
AdhesionGrade 1-2 (cross-cut test), or ≥ 30N/10mm (peel strength)
Temperature range-30℃ to +120℃ (EP coating has better temperature resistance than PE)
InsulationElectrical spark test 2000V - 5000V: No breakdown (no pinholes)
Connection methodSmall diameterThreaded connection (DN15-DN100)
Medium and large caliberGrooved connection (DN65-DN400), flange connection (any diameter)
Special connectionBimetallic welding, socket connection (for underground use only)


仓库现货9


01

Acid and alkali resistance test

02

Zinc layer experiment

03

Bending test

04

Yield strength test

05

Tensile strength test

06

Spectral detection

07

Hardness testing

08

Chemical composition detection

壁厚测量

Thickness measurement

厚度测量

Thickness measurement

厚度测量666

Thickness measurement

半径测量

Radius measurement

直径测量

Diameter measurement

直径测量2

Diameter measurement

长度测量

Length measurement

涂层测量

Coating measurement

TESTIMONIALS

The quality of this batch of steel pipes far exceeded expectations. The material is uniform and thick, the cut is smooth and burr-free, and the installation is seamless. The project efficiency was maximized, and the cooperation was very pleasant!

Julian

Julian

Sales Director

We've collaborated several times, and the hardness and toughness of the steel perfectly meet our project standards. The delivery speed is fast, and the packaging is secure with no damage. A reliable supplier is our first choice!

John Smith

John Smith

Sales Director

The surface treatment of the steel pipe is very good, the anti-rust coating is uniform and firm, and the dimensional accuracy is very high. It does not require secondary processing at all, which greatly saves our time and costs.

Freya

Freya

Purchasing Manager

The steel is very cost-effective, has stable mechanical properties, and passed the test on the first try. Customer service responded promptly, and communication was very smooth. We will continue to cooperate with them in the long term.

Elara

Elara

Purchasing Manager

The custom-made irregular-shaped steel pipes perfectly replicated our design drawings. The workmanship was exquisite and flawless, and the delivery time perfectly met the project schedule. We are extremely satisfied with this purchase!

Lila

Lila

Purchasing Manager

 Online Consultation

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