Shenyang Qiangyun Color Steel & Steel Structure Co., Ltd. is one of the most reliable manufacturers and suppliers of polyurethane sandwich puf panels in China. With abundant experience, we are committed to providing high quality customized products with competitive price. Welcome to wholesale advanced polyurethane sandwich puf panels in stock here from our factory. Also, pricelist is available.

Why Specifiers Pick This Cladding

Brick, block and cast in-situ walls all demand scaffolding, curing time and several trades. A factory-made cladding board needs none of that: each unit arrives finished on both faces and fixes straight to girts or purlins, so an elevation can be closed in days rather than weeks.

Specification	Technical Data
Item	Wall Polyurethane Composite Panels
Metal skins	Pre-painted galvanised or galvalume coil (PPGI, PPGL), zinc-coated sheet, aluminium coil
Insulating core	Rigid closed-cell PUR or PIR foam at high density
Nominal depth	50 / 75 / 100 / 120 / 150 / 200 mm (30 mm made to order)
Steel gauge	0.3-0.8 mm, chosen for the duty
Cover width	960 mm or 1,000 mm; special widths on request
Unit length	Cut to the millimetre anywhere between 1 m and 11.8 m
Foam density	38-43 kg/m3 as standard; 45-50 kg/m3 where extra stiffness is needed
Lambda value	0.022-0.024 W/(m.K), among the lowest of any rigid insulant
Moisture uptake	At or below 1.5% by volume after immersion
Reaction to fire	B1 to EN 13501-1 and Class 2 to ASTM E84; the foam stops burning once the flame is withdrawn
Joint detail	Machined tongue-and-groove interlock that closes the joint against air and driving rain
Permissible load	2.5 kN/m2 or better
Wind uplift	Verified beyond 1,200 Pa
Driving-rain tightness	Classified to IPX4
Service range	Minus 40 degrees to plus 80 degrees Celsius
Design life	Two decades or more in ordinary outdoor exposure
Colour programme	Off-white, pearl grey, sky blue and terracotta held in stock; the whole RAL chart to order

Depth Selection for Elevations

Depth is decided on the drawing, not picked off a shelf. Shallow 50 mm units line partitions where heat loss hardly matters; 75 mm and 100 mm are the everyday cladding depths for heated or cooled industrial space; 120 mm and above appear where the envelope must hold a tight band or where the board spans further between supports. Every depth shares one joint profile, so depths can be mixed across a single elevation without changing the trim.

Elevation Selection by Building Type

Match the board depth to what the elevation actually has to do:

Building type	Depth we suggest	What it buys you
Internal partitions, site cabins	50 mm	Lowest material spend, lightest handling
Standard factory and warehouse cladding	75-100 mm	Cooling load drops by roughly a fifth
Retail shells, showrooms, airport sheds	100-150 mm	Flat crisp facade lines with fewer visible joints
Tall curtain walling, exposed sites	150-200 mm	Extra rigidity over long spans, minimal thermal bridging
Coastal and industrial atmospheres	100 mm and thicker	Holds at 1,200 Pa and beyond, with salt-resistant facings

How It Stacks Up

Against the three alternatives a specifier normally shortlists - EPS-cored sandwich board, mineral wool board and insulated blockwork - the PUR composite wins on three counts at once: it insulates better per millimetre, it keeps that value because the closed cells reject water, and it arrives already finished. Set against EPS, the same U-value comes from a slimmer board, which frees floor area along the perimeter. Set against mineral wool, it weighs roughly half as much for equal performance, which lightens the frame and speeds erection. Set against masonry, it takes the wet trades off the critical path entirely.

Applications

Typical duties include the outer envelope of steel-framed factories and distribution sheds, over-cladding of ageing concrete or brick facades, infill walls in retail and airport structures, and the visible elevations of modular or container-derived buildings. It works equally well as a spandrel panel beneath ribbon glazing, where a flat consistent finish matters more than anything else. Matching trims, corner pieces and flashings are stocked to close the envelope at parapets, openings and plinths.

Customization

Nothing here is fixed by catalogue. Depth, cut length, cover width, steel gauge, coating system and shade are all selected per order, and printed or embossed finishes can be developed for branded elevations. Because profiling and foaming happen on the same continuous line, a bespoke run holds the tolerances of a standard one, and a colour sample is normally approved before the order is released.

Company & Factory Profile

Our plant has been turning out insulated metal panels since 2010. Some 15,000 m2 of covered production space houses continuous laminating lines together with the coil-handling, profiling and packing equipment behind them, and daily output runs close to 20,000 m2. Export documents, mill certificates and coating data sheets go out with every consignment, and our commercial team prices against drawings rather than guesswork.

Certifications & Quality Assurance

Production runs under management systems certified to ISO 9001 for quality, ISO 14001 for environmental control, ISO 45001 for occupational health and safety and ISO 50001 for energy management. Face metal is bought to EN steel specifications with documented coating thickness, and fire behaviour is declared to EN 13501-1 with test reports released on request.

Project Cases

A beverage bottling and distribution hall near Santiago, Chile, was reclad in 2021 with roughly 6,400 m2 of 100 mm board in a light grey finish. The brief was to stop the afternoon heat gain that had made the packing hall unusable in summer and to give the road-facing elevation a cleaner appearance. Fixing straight to the existing girts avoided demolishing the old substrate, production continued inside throughout, and measured peak cooling demand fell by about a quarter in the first full season.

Warranty and After-Sale Service

One contact follows the order from enquiry to handover: U-value calculations and drawings before you commit, a production slot confirmed in writing, photographs of the finished stack before loading, and installation drawings with fixing details alongside the goods. Material and thermal performance are warranted for ten years, and technical questions are answered for as long as the boards stay in service.

Packaging & Shipping

Every board leaves the line with a peel-off film over the visible face. Bundles are edge-protected, strapped to heat-treated timber pallets and wrapped in stretch film under a waterproof hood, then braced inside the container so nothing shifts on a long sea leg. Shipments move on FOB, CIF or DDP terms, and the document set - bill of lading, commercial invoice, packing list, certificate of origin and fumigation certificate where required - is prepared by our own export desk.