Polyurethane (PU) Sandwich Panel

Polyurethane(PU) sandwich panel consists of a rigid polyurethane foam, which core bonded with color-coated steel sheets on both sides. It offers excellent thermal insulation, moisture resistance, and structural stability in daily usage. This product now is widely used in wall and roof enclosures for industrial buildings, warehouses, cold storage facilities, and cleanrooms.

Available Surface Options: Flat, Corrugated, Embossed Orange Peel Texture, Square Ribbed, Quad-Lock Edge.

Our Photos of Automated PU Panel
Production Line & Production environment

Structure & Features

Double-sided interlocking joint design enables quick installation and tight seams, improving air and water tightness.

The PU core has low thermal conductivity, providing superior insulation and helping reduce energy consumption.

The outer surface comes with either embossed or flat color-coated steel, offering good weather resistance and aesthetics.

Lightweight yet high-strength, ideal for fast-track construction and long-span structures.

Applications

Widely used in steel structure factories, equipment rooms, and utility buildings for exterior walls, roofing, and internal partitions, offering thermal insulation, water resistance, and structural strength.

Applied in cold storage, refrigerated logistics centers, and food processing areas where strict temperature control is required.

Used for insulation systems in shopping malls, exhibition halls, and office buildings, offering excellent thermal performance and weather resistance.

Ideal for modular structures, mobile housing, and prefabricated buildings, featuring lightweight construction and rapid installation.

Rock Wool Sandwich Panel

Polyurethane(PU) Sandwich Panel for Floor Heating(with Grooved Surface for Easy Pipe Installation)

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Quad-Lock Polyurethane Sandwich Panel

(Four-Sided Interlocking PU Panel)

While keeping the core material the same, compared with traditional double-lock (two-sided interlocking) PU sandwich panels, this quad-lock PU panel (Four-Sided Interlocking PU Panel) offers significant advantages in many ways, such as structural sealing, ease of installation, overall performance and so on.

comparison

Item	double-lock (two-sided interlocking) PU sandwich panels	Quad-Lock Polyurethane Sandwich Panel (Four-Sided Interlocking PU Panel)
Joint Method	With buckle joints on two sides (top - bottom or left - right)	Tongue - and - groove structures designed on all four sides (top - bottom + left - right)
Installation Method	Horizontal insertion or vertical fitting	Insertable in any direction on four sides, with tighter engagement
Sealing Treatment	Usually need to apply sealant or install sealing strips	With multiple built - in tongue - and - groove seals, better airtightness
Protection Effect	Average windproof/dust - proof performance	Better windproof, waterproof and cold - bridge - preventing performance

Product Advantages

Superior Sealing

Four-sided interlock ensures excellent airtightness and thermal efficiency.

Stable and Reliable

Strong joint integrity, ideal for high wind and temperature variation zones.

Efficient Installation

Snap-fit design reduces labor and speeds up assembly.

Clean Aesthetic

Concealed fastening for a seamless and professional appearance.

Durable Performance

Moisture-resistant edges extend lifespan and support reusability.

Company Profile

At Ecosteel Source, we combine manufacturing expertise and global trade experience to deliver sustainable, high-performance steel materials and advanced building solutions that shape the future of modern construction.

With a full range of products covering Zinc-Aluminum-Magnesium (ZAM) coated steel, galvalume (GL) steel, galvanized (GI) steel, pre-painted steel (PPGI/PPGL), as well as floor deck systems, C/Z/U structural purlins, metal studs&tracks (roof&wall), corrugated color steel sheets (roof&wall), sandwich panels and cleanroom panels, we deliver comprehensive solutions for modern roofing and wall cladding systems.

Combining advanced processing capability, strict quality control, and customized service, Ecosteel Source aims to help our partners to build durable, energy-efficient, and sustainable architectural projects worldwide.

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