Name: Plastic-lined Galvanized Steel Pipe
SKU: 0

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Plastic-lined Galvanized Steel Pipe

Pipe Type: Plastic-Lined Galvanized Steel Pipe, PE/PP-R Lined Galvanized Pipe, Corrosion-Resistant Lined Galvanized Pipe

OD: 15mm ~ 300mm

WT: 1.5mm ~ 6mm

Length: 3m, 6m Fixed Length, or Customized.

Connection: Thread (Groove Coupling optional)

Lining Materials: Polyethylene (PE), Polypropylene (PP-R), PVDF (for specific chemicals)

Standards: Complies with GB/T 28897, FDA, NSF/ANSI 61

Application: Building cold & hot water supply systems, Industrial water piping with moderate chemical exposure, Fire sprinkler system branch lines (where permitted by code)

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Product Description

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Product Application

Packaging and shipping

Corrosion & Scale Resistance, Safe & Hygienic

The liner completely isolates water from metal, preventing "yellow water" and rust residue.

Cost-Effective & Easy Installation

An upgrade from galvanized pipes with high cost-performance; can use mature threaded or grooved connections.

Good Strength & Long Service Life

Retains the mechanical strength of galvanized steel pipe, while the liner extends its service life far beyond ordinary galvanized pipe.

Specifications：

Item	Description
Base Pipe	Material/Process	Hot-dip galvanized welded steel pipe from Quality Carbon Steel (Q215/Q235)
	Nominal Diameter	Nominal Diameter (DN): DN15 - DN200 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200 mm
	Zinc Coating	Avg. thickness ≥45μm, for basic external corrosion protection.
	Standards	GB/T 3091-2015 Welded Steel Pipes for Low-Pressure Fluid Conveyance
Liner	Material	Food-Grade High-Density Polyethylene (HDPE)
	Liner Thickness	2.5 - 4.0 mm（Adjustable based on diameter and service requirements）
	Density	0.93 - 0.96 g/cm³ (HDPE)
	Continuous Service Temp.	0℃ ~ 60℃, Short-term Peak: ≤ 80℃
	Tensile Strength	20 - 30 MPa (HDPE)
	Hygiene Certification	Complies with safety evaluation standard for drinking water equipment & protective materials.
	Core Properties	Non-toxic, compliant with potable water standards. Excellent water resistance, flexibility, and moderate abrasion resistance, effectively isolating metal from water corrosion and scaling.
Finished Product	(PN) Nominal Pressure	1.6MPa - 2.0MPa, 1.6 MPa (Typical rating)
	Service Temperature	Cold Water: 0℃ ~ 55℃ Hot Water: 0℃ ~ 75℃ (Instantaneous up to 95℃)
	Product Standard	CJ/T 136 "Plastic-lined Composite Steel Pipes", GB/T 28897 "Steel-Plastic Composite Pipes for Fluid Transportation" Lined Plastic Composite Steel Pipe, Steel-Plastic Composite Pipe for Fluid Transportation
	Product Standard
	Connection	Threaded / Grooved (Victaulic) / Flanged
	Coating Adhesion	≥ 30 N/cm (or tested according to CJ/T 136 standard As per CJ/T 136)
	Flattening Performance	No cracking or delamination when flattened to 2/3 of OD.
	Hydrostatic Test	Withstand 1.5x PN for ≥5s, no leakage.
	Fire Resistance	Suitable for fire sprinkler systems, subject to relevant certifications (e.g., UL, FM).
	Ends	flat ends, angled ends, threaded connectors or sockets; plastic caps and steel rings are available if needed.
	Ends
	Packing	Waterproof Paper wrapped, Steel Strips bundled, two tags on each bundle
	Key Features	Dual Protection: PE liner against corrosion/scaling; galvanized exterior against rust.
		Hygienic & Safe: Complies with potable water standards.
		High Strength & Long Life: Metal body for pressure, composite structure extends service life.

Marine and Marine Engineering
Petrochemical Industry
Municipal Water Supply And Drainage
Natural Gas Transportation
Fire Protection
Energy and Electricity

FAQ

1.What kind of customer service do you provide?

We provide comprehensive customer service, including basic design, procurement of supporting facilities, and options for dispatching installation guides.

2.What are the customer evaluations of your company?

We are proud to consistently receive five-star reviews from our customers, which demonstrates our commitment to quality and service.

3.What is your quality inspection process like?

Our strict quality inspection process ensures that every product meets the highest standards of excellence. From raw materials to finished products, every stage is carefully inspected to ensure excellent quality.

4.Do you accept container loading inspection?

Welcome to dispatch inspectors, not only for container loading, but also at any time during production.

5.What is the delivery time?

The delivery time depends on the quantity of orders. Usually, the delivery time to the nearest port in China is 15-30 days after receiving the deposit.

6. How to obtain a project quotation?

You can contact us 24 * 7 via email, phone, WhatsApp, WeChat, etc. You will receive a reply within 4 hours.

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