Plastic-lined Galvanized Steel Pipe

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)

Product Description
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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:

ItemDescription
Base PipeMaterial/ProcessHot-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 CoatingAvg. thickness ≥45μm, for basic external corrosion protection.
StandardsGB/T 3091-2015 Welded Steel Pipes for Low-Pressure Fluid Conveyance
LinerMaterialFood-Grade High-Density Polyethylene (HDPE)
Liner Thickness2.5 - 4.0 mm(Adjustable based on diameter and service requirements)
Density0.93 - 0.96 g/cm³ (HDPE)
Continuous Service Temp.0℃ ~ 60℃, Short-term Peak: ≤ 80℃
Tensile Strength20 - 30 MPa (HDPE)
Hygiene CertificationComplies with safety evaluation standard for drinking water equipment & protective materials.
Core PropertiesNon-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 Pressure1.6MPa - 2.0MPa, 1.6 MPa (Typical rating)
Service Temperature Cold Water: 0℃ ~ 55℃
Hot Water: 0℃ ~ 75℃ (Instantaneous up to 95℃)
Product StandardCJ/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
ConnectionThreaded /  Grooved (Victaulic) /  Flanged
Coating Adhesion≥ 30 N/cm (or tested according to CJ/T 136 standard As per CJ/T 136)
Flattening PerformanceNo cracking or delamination when flattened to 2/3 of OD.
Hydrostatic TestWithstand 1.5x PN for ≥5s, no leakage.
Fire ResistanceSuitable for fire sprinkler systems, subject to relevant certifications (e.g., UL, FM).
Endsflat ends, angled ends, threaded connectors or sockets; plastic caps and steel rings are available if needed.
PackingWaterproof Paper wrapped, Steel Strips bundled, two tags on each bundle
Key FeaturesDual 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.


拼图_美图设计室

  • Marine and Marine Engineering
  • VCG41N1294103185
    Petrochemical Industry
  • VCG211475367801
    Municipal Water Supply And Drainage
  • VCG211448584768
    Natural Gas Transportation
  • VCG41N1395455710
    Fire Protection
  • 能源电力行业
    Energy and Electricity
  • 微信图片_20260123145751_17897_32
  • 微信图片_20260123145749_17896_32
  • 微信图片_20260123145748_17895_32
  • 微信图片_20260123145804_17898_32

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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