Pre-Painted Steel Insulated Sandwich Panels

Pre-Painted Steel Insulated Sandwich Panels

Jinnuoda pre-painted steel insulated sandwich panels combine coated steel faces with PU, PIR, EPS or Rock Wool cores for roof and wall enclosure projects. The core selection lets buyers balance thermal needs, fire classification, density, project budget and building use. Available thickness, profile, color and cut-length options support coordinated procurement for industrial, logistics, cold-storage, agricultural and controlled-environment buildings. Project-specific design remains important: panel layout, joints, support spacing, flashings and safety requirements should be reviewed against local codes and the approved building envelope design.

Overview

Overview

Product Overview

Jinnuoda pre-painted steel insulated sandwich panels are building-envelope products made with coated steel faces and an insulating core. The available core options are PU, PIR, EPS and Rock Wool. Each option has a different balance of thermal conductivity, density and stated fire classification, so the core should be selected around the building use and the applicable project requirements. These insulated sandwich panels can be used for roof and wall enclosures in industrial construction, logistics facilities, cold-storage buildings, agricultural structures and other projects where a coordinated enclosure package is needed.

An insulated panel is a system component, not an isolated material choice. Its performance in a building depends on the panel core, steel face, joint profile, fasteners, sealants, flashings, support arrangement, penetrations and workmanship. Jinnuoda helps buyers define the panel schedule from the available project information. The responsible project team should verify structural, thermal, fire, moisture and code requirements before selecting a final configuration.

Key Features

Four Core Options for Different Priorities

PU, PIR, EPS and Rock Wool provide distinct selection paths. PU is commonly considered where lower thermal conductivity is important. PIR can be considered for industrial applications requiring the stated B1 flame classification. Rock Wool is listed with an A1 non-combustible classification, while EPS provides a lower-density option for cost-conscious building envelopes. The final choice should be matched to the approved project specification.

Pre-painted Steel Faces

Each panel uses pre-painted steel faces around the insulation core. The available zinc coating range is 60g/m² to 275g/m², and PE or PVDF coating systems can be discussed for the required exposure conditions. Coating selection should reflect the project environment, cleaning approach, edge protection and maintenance planning.

Joint and Accessory Coordination

Panel joints, concealed or exposed fasteners, sealants and flashings should be specified as a coordinated assembly. Proper detailing at corners, openings, roof-to-wall transitions and service penetrations is central to a practical enclosure design. Site crews should work from approved drawings and follow the project installation method.

Configurable Appearance and Dimensions

Panel thickness can be customized from 40mm to 250mm. Flat, ribbed, wave and micro-ribbed surface profiles are available, along with RAL color options and cut lengths up to 11.8m for standard container transport. Final dimensions must account for handling, transport, support layout and safe installation planning.

Technical Advantages

The value of pre-painted steel insulated sandwich panels is that they combine enclosure, insulation and finished surface layers in one supplied panel. This can simplify the interface between the roof or wall finish and the insulation layer compared with multi-layer site-built assemblies. However, panel selection should not be based on thermal conductivity alone. For example, the required fire classification, service temperature, humidity profile, acoustic expectations, loading, building code and insurance conditions may all influence the core decision.

For B2B procurement, it is helpful to request a panel schedule that records the core type, thickness, steel-face coating, profile, effective coverage, color, length, joint type, accessories and relevant approval documents. This creates a more transparent basis for comparing insulated wall panels and insulated roofing panels across suppliers. Jinnuoda can use that schedule to align the supply scope with the available project drawings and purchasing requirements.

Technical Specifications

Core Type	Insulation (W/mK)	Fire Rating	Density (kg/m³)	Best For
PU	0.020 - 0.024	B2 / Standard	40 - 45	Cold Storage
PIR	0.021 - 0.025	B1 (Flame)	42 - 48	Industrial
Rock Wool	0.038 - 0.042	A1 (Non-comb)	100 - 120	High Safety
EPS	0.033 - 0.036	B2 / Standard	12 - 20	Economic Park

Applications

❄️ Cold storage and logistics: PU insulated sandwich panels can be evaluated for buildings where the enclosure forms part of a temperature-control strategy. The complete thermal design should address joints, doors, floors, vapour control and equipment interfaces.	🏭 Industrial plants: PIR or Rock Wool insulated wall panels can be considered where the stated core characteristics align with the required building specification and fire strategy.
🧼 Clean and controlled environments: smooth surface options may be useful in facilities where the wall finish, joint treatment and cleaning process are defined by the project team.	🌾 Agricultural and storage buildings: EPS, PU, PIR or Rock Wool configurations can be compared according to budget, climate, ventilation, hygiene and applicable fire requirements.

Commercial Value

Jinnuoda helps procurement teams turn a broad request for insulated sandwich panels into a clear supply package. A well-defined request identifies the building application, core type, panel thickness, face finish, color, profile, lengths, accessories, quantity and delivery requirements. This improves technical comparisons and helps reduce uncertainty during ordering. Product samples, technical documents and project drawings can be reviewed together where an approval process requires them. The outcome should be a panel configuration that fits the approved envelope design rather than a generic, one-size-fits-all selection.

Frequently Asked Questions

Q1: How do PU, PIR, EPS and Rock Wool panels differ?

They differ in the stated thermal conductivity, density and fire classification shown in the technical table. The appropriate core depends on the project’s building use, performance targets and governing requirements.

Q2: Can insulated sandwich panels be used for both roofs and walls?

Yes, provided that the selected profile, thickness, joint system, supports and accessories are designed for the intended roof or wall application. The final layout should follow approved engineering and installation documentation.

Q3: What information should be supplied for a quotation?

Share drawings, application, required core type, thickness, profile, color, panel lengths, quantity, accessories, project location and delivery terms. Any required testing or approval documents should be identified at the inquiry stage.

Q4: Are the quoted fire classifications sufficient for regulatory approval?

No. The technical table states the supplied core classifications, but local codes, assembly requirements and project approvals must be checked by the responsible design and compliance parties.