Name: Stainless Steel-Plastic Lined Composite Pipe
SKU: 0

Products Center


Location: Home > Steel-Plastic Lined Composite Pipe > Stainless Steel-Plastic Lined Composite Pipe

Stainless Steel-Plastic Lined Composite Pipe

Pipe Type: Bimetallic Lined Pipe, Mechanically Lined Pipe (MLP), Clad Pipe, Stainless Steel (304/316L) Lined Carbon Steel Pipe

OD: 25mm ~ 1200mm

WT: 3.5mm ~ 40mm

Length: 6m Fixed Length, SRL (Up to 12m), or Customized.

Connection: Butt Weld (Most Common), Flange (with clad or weld-neck flange), Special Ends for Mechanical Coupling.

Liner Materials: Austenitic Stainless Steels (304, 304L, 316, 316L), Duplex Stainless Steel (2205), Nickel Alloys (Alloy 625, C276).

Outer Pipe (Base Material): Carbon Steel (A106 Gr.B, API 5L Gr.B), Low Alloy Steel.

Bonding Method: Mechanical Hydraulic Expansion / Thermohydraulic Process, ensuring a tight, metallurgical bond between layers.

Standards: Complies with ASTM A578 (Ultrasonic Inspection), ASTM A264/A265 (Stainless Chromium-Nickel Steel Clad Plate), NORSOK M-630 (Material data sheet), DNVGL-RP-F112 (Design of Duplex Stainless Steel), and project-specific specifications.

Application: Oil & Gas (Upstream & Midstream): Corrosive wet gas pipelines, CO₂ injection lines, subsea flowlines, produced water disposal lines.Chemical & Petrochemical: High-temperature and high-pressure process lines carrying corrosive catalysts or effluents.Power Generation: FGD (Flue Gas Desulfurization) systems, high-purity feedwater lines, and geothermal brine pipelines. Marine Engineering: Seawater cooling and firefighting systems on ships and offshore platforms.

Send Email

Product Description

Product Display

Product Application

Packaging and shipping

Ultra-High Cleanliness & Hygiene

The stainless steel base is safe and inert, and the plastic liner completely eliminates any risk of metal ion leaching, meeting the highest hygiene standards in potable water, food, and pharmaceutical industries.

Dual Internal & External Protection

The stainless steel shell resists atmospheric and external corrosion; the plastic liner resists internal chemical media, providing dual safety.

Lightweight, High Strength & Long Life

Using thin-walled stainless steel makes the pipe lightweight yet strong with good impact resistance; offers an extremely long, nearly maintenance-free service life.

Excellent Hydraulic Performance & Aesthetics

The extremely smooth inner wall reduces fluid resistance and inhibits bacterial growth; the stainless steel exterior is aesthetically pleasing for exposed installations.

Specifications：

Item	Description
Base Pipe	Material/Process	304 (0Cr18Ni9), 304L (00Cr19Ni10), 316 (0Cr17Ni12Mo2), 316L (00Cr17Ni14Mo2) Thin-walled Austenitic Stainless Steel Pipe






	Common Sizes	Nominal Diameter (DN)：DN15 - DN300
	Surface Finish	Internal/External Mechanically or Electropolished, typical Ra ≤ 0.8 μm.
	Standards	GB/T 12771: Stainless steel welded pipes for fluid transport; GB/T 14976: Stainless steel seamless pipes for fluid transport; GB/T 19228.2: Stainless steel press-fit pipe assemblies - Part 2: Thin-walled stainless steel tubes for connections; ASTM A312/A312M: Specification for nominal tubes of seamless and welded austenitic stainless steel; ASTM A269/A269M: Specification for seamless and welded austenitic stainless steel tubes for general purpose; JIS G3459: Japanese Industrial Standard for stainless steel tubes.
Liner	Material Options	Food/High-purity Grade Plastics: HDPE, PE-RT, PP-R, etc.
Liner	Standards	GB/T 13663.2 (HDPE) (Polyethylene for Water Supply), GB/T 18742 (Polypropylene PP-R for Hot and Cold Water), GB/T 18992 (Cross-linked Polyethylene PE-X for Hot and Cold Water); ISO 4427 (Polyethylene PE Water Supply Pipes), ISO 15874 (Polypropylene PP-R Hot and Cold Water Pipes); GB/T 17219 (Basic Sanitary Safety), GB/T 28799.2 (PE-RT)
HDPE	Thickness	2.0 - 3.5 mm
	Fluid Temp. Range	2℃ ~ 60℃
	Key Properties & Hygiene	Excellent chemical resistance and flexibility; complies with potable water hygiene standards like GB/T 17219.
PE-RT	Thickness	2.0 - 3.5 mm
	Fluid Temp. Range	≤ 70℃ hot water
	Key Properties & Hygiene	Heat and pressure resistant, anti-creep, suitable for building hot/cold water systems; hygienic.
PP-R	Thickness	2.5 - 4.0 mm
	Fluid Temp. Range	≤ 70℃ (95℃ for short periods)
	Key Properties & Hygiene	Better heat resistance, lightweight, reliable (heat-fusion) connections; widely used in high-quality water supply systems.
Finished Product	Product Standard	CJ/T 184-2012 Stainless Steel Lined Composite Pipes and Fittings
		Stainless Steel Lined with Plastic Composite Pipes and Fittings
		ASTM F2880: American Society for Testing and Materials (ASTM) specification for internally and externally lined composite pipes.
	Design Pressure	Strong pressure rating, typical 1.6 - 2.5 MPa, depending on wall thickness series.
	Hygiene Certification	Mandatory compliance for drinking water safety evaluation.
	Connection Types	Double Press-fit, Flanged Connection, ensuring joint strength and sealing.
	System Cleanliness	Mirror-smooth bore, excellent compatibility with CIP/SIP.
	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	Ultimate Hygiene & Safety: Dual barrier (SS + food-grade plastic).
		Superior Corrosion Resistance: Internal & external protection.
		High Strength & Long Life: Robust, maintenance-free, optimal life-cycle cost.
		Aesthetic & Applicable: Exposed installation suitable for cleanrooms.

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.

Inquiry Online

Product recommendation