Name: Carbon Steel-Plastic Lined Pipe
SKU: 0

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Carbon Steel-Plastic Lined Pipe

Pipe Type: Carbon Steel Steel-Plastic Lined Pipe, PE/PO/PTFE Lined Carbon Steel Pipe, Anti-Corrosion Lined Steel Pipe

OD: 25mm ~ 1000mm

WT: 3mm ~ 20mm

Length: 6m Fixed Length, SRL, DRL, or Customized.

Connection: Flange (Most Common), Weld (with lined weld neck flange)

Lining Materials: Polyethylene (PE), Polypropylene (PP), PO (Polyolefin), PTFE (Polytetrafluoroethylene, for strong acids/alkalis)

Standards: Complies with HG/T 20538, GB/T 24159, ISO 16139

Application: Chemical processing plants (acid, alkali, salt solution pipelines), Mining & metallurgy (slurry, tailings transportation), Sea water intake & treatment systems, Power plant desulfurization and wastewater lines

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High Strength & Pressure Rating

The carbon steel base pipe (especially seamless) provides extremely high mechanical strength and pressure rating, suitable for high-pressure pipelines.

Excellent Corrosion & Abrasion Resistance

The optimal liner material (e.g., PTFE, PO) can be selected based on the specific medium (acid, alkali, solvent, slurry), offering wide applicability.

Industrial-Grade Reliability & Long Life

The design philosophy of "steel for pressure, plastic for corrosion resistance" ensures a service life far exceeding ordinary steel pipes in harsh industrial environments, with high overall cost-effectiveness.

Good Insulation & Hydraulic Performance

The plastic liner has low thermal conductivity, providing some insulation; the smooth inner wall reduces resistance and minimizes scaling.

Specifications：

Base Pipe	Material/Process	Welded Pipe: Q345B、Q235B、Q355B、GB/T 3091、ASTM A53 Seamless Pipe: 20#、Q245R、Q345R，ASTM A106 Gr.B
	Material/Process
	Common Sizes	Nominal Diameter: DN25 - DN1000+
		Outer Diameter: φ21.3mm ~ φ762mm (Welded pipes can be customized).
		Wall thickness: SCH20, seamless SCH40, SCH80, ST series or customized according to design pressure.
	Surface Prep	Blast-cleaned to Sa 2.5, anchor profile 50-90μm.
	Standards	Seamless: GB/T 8163 (for fluid transport) / ASTM A106 (for high-temperature applications), Welded: GB/T 3091 (for low-pressure fluids) / ASTM A53, Line Pipe: API 5L (for oil and gas transport)


Liner	Material	Engineering Plastics: PO, PP, PVDF, PTFE, etc.
Liner	Standards	PE lining GB/T 13663, PVC-C lining GB/T 18993.2, PP-R lining GB/T 18742.2, PE-X lining GB/T 18992.2
PO	Thickness	3.0 - 6.0 mm
	Cont. Temp.	-50℃ ~ 80℃
	Density	~0.94 g/cm³
	Characteristics	General industrial grade. Abrasion resistant, resistant to many acids/alkalis, cost-effective.
PP	Thickness	3.0 - 5.0 mm
	Cont. Temp.	-20℃ ~ 90℃
	Density	0.90-0.91 g/cm³
	Characteristics	Good temperature resistance. Excellent overall chemical resistance, especially to inorganic acids, bases, salts.
PVDF	Thickness	2.0 - 4.0 mm
	Cont. Temp.	-40℃ ~ 120℃
	Density	1.75-1.78 g/cm³
	Characteristics	High performance. Resistant to strong oxidizers, halogens, high-purity media; high mechanical strength.
PTFE	Thickness	1.5 - 3.0 mm
	Cont. Temp.	-200℃ ~ 200℃
	Density	2.10-2.30 g/cm³
	Characteristics	“Plastic King”. Resistant to almost all chemicals, very low friction coefficient, for most severe conditions.
Finished Product	Product Standard	CJ/T 136 "Plastic-lined Composite Steel Pipe", GB/T 28897 "Steel-Plastic Composite Pipe for Fluid Transportation", GB/T 17219 ASTM, A106, API 5L
	Design Pressure	Depends on base pipe wall thickness, material, and diameter. Typical range: 1.0 - 10.0 MPa or higher.
	Operating Temp.	Typically -50℃ ~ +95℃ or higher depending on liner
	Vacuum Resistance	Suitable for vacuum service, e.g., -0.098 MPa, especially with dense liners like PTFE/PVDF.
	Vacuum Resistance	Yes (especially for dense linings such as PTFE and PVDF). Suitable for vacuum conditions, such as -0.098 MPa.
	Connection	Liner extended to flange face for continuous corrosion protection. Butt-weld, threaded ends available upon request.
	Connection
	Liner Adhesion	Peel strength ≥ 30 N/cm (or as per project spec).
	Pressure Test	1.5x design pressure for ≥10s, no leakage.
	Pressure Test	Pneumatic Test: To be performed as per code.
	Inspection & Certs.	Available: 3rd-party inspection reports, MTC, certificates of compliance.
	Ends	Flat ends, angled ends, threaded connectors or sockets; plastic caps and steel rings are available if needed.
	Packing	Waterproof Paper wrapped, Steel Strips bundled, two tags on each bundle
	Key Features	Steel for pressure, plastic for corrosion. Wide chemical compatibility by liner selection. Long life, optimal life-cycle cost vs. alloys.

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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