The structural elements that join, seal, and safeguard polycarbonate panels in any glazing system are known as plastic sheet accessories. Sin Hai Baoding Sunboard Manufacturing Co., Ltd. 30 years of expertise, three manufacturing bases, more than 25 production lines, and an annual output of more than 60,000 tonnes. Full range of PC profiles and fittings to suit panel thickness of 4mm to 20mm. Each profile is made of 100% virgin PC resin with UV stabilisation and will match the panels you purchase for colour and performance.
These are structural and finishing elements for the installation of thermoplastic glazing. They allow the natural thermal expansion of plastic panels, prevent the intrusion of water and dust and avoid stress cracking due to incompatible sealants.
The primary sorts of products are:
Each kind of profile fills a need for installation so your roof, greenhouse or canopy functions as specified.
| Parameter | Details |
|---|---|
| Material | 100% virgin PC resin with UV co-extruded layer; aluminum option available |
| Profile Types | H-type (Joiner), U-type (End-cap), F-snaps |
| Compatible Panel Thickness | 4 mm – 20 mm |
| Standard Length | 6 m (cutting to 5 m available) |
| Colors | Transparent stock; custom colors matched to ordered panels |
| MOQ | 500 pcs |
| Lead Time | 7–15 working days |
| Certifications | ISO 9001:2015, CE, RoHS, UDEM |
The UV co-extruded layer of each profile is resistant to yellowing and embrittlement when exposed to the sun over time – the same technology used across all the polycarbonate sheets in the Sinhai line.
Quality control for plastic sheet accessories involves various stages: Calliper measurement of profile wall thickness to ensure dimensional tolerance, accelerated weathering (QUV testing) to check colour fastness, and compression set testing to check that gaskets return to original form after prolonged pressure. Aluminium profile option is salt spray tested to ISO 9227 for corrosion resistance, suited for coastal or industrial situations.
Polycarbonate panels expand and shrink a lot with temperature changes. Profiles for PC sheets are constructed with internal clearance zones. This means that the panel may move without buckling or breaking.
Sealant selection is a detail that has direct long-term performance implications. Only neutral-cure silicones should be used with these accessories – acetoxy-cure silicones chemically damage polycarbonate and cause premature failure. Avoid this typical site blunder with free installation drawings from Sinhai with all orders.
Anti-dust tapes at the edges of the sheets let out moisture but keep dust, algae spores and insects out. This is especially important for greenhouse and roofing applications.
Greenhouse Structures: Multiwall polycarbonate panels are sealed with H-profiles and U-caps to control internal humidity and prevent bug and algal intrusion.
Roofing and Skylights F-snap and aluminium joiner profiles provide weather-proof couplings in warehouses and industrial buildings, where wind load resistance and heat movement are constant issues.
Canopies and Pergolas: Color-matched PC profiles offer the structure a clean, completed look, while protecting panel edges from rain and debris.
Sound Barriers and Partition Walls Clamping attachments absorb constant vibration and wind pressure to hold acoustic PC panels in place for long durations of operation.
These plastic sheet accessories are suitable for all conventional applications where polycarbonate, acrylic or PVC panels are used, making them a viable option for contractors and project developers alike.
We accept OEM and ODM orders with bespoke colours to match your panel order. If your project needs a non-standard colour or a particular profile size, the team may work with you directly on the demand.
By default, stock profiles are transparent. Custom Colours are made to order with a MOQ of 500 pieces and a lead time of 7-15 working days. For Central Asia projects, the Kashgar manufacturing base can supply the regional market, and has lower transportation time.
Installation drawings and free samples available before placing your purchase to check fit and compatibility. Request these when you make your first inquiry.
The incoming material inspection, in-process inspection and final inspection before delivery for every batch of accessories. Key assessed indications include dimensional accuracy, UV resistance, impact performance and colour consistency.
For procurement needs in European, Central Asian and other foreign markets, Sinhai maintains ISO 9001:2015, CE, RoHS and UDEM certifications. The technological depth of the product line is also reflected in the fact that, on September 29, 2024, the national standard for polycarbonate sheets (implementation date: April 1, 2025) was issued, with Sinhai being one of the major drafting units.
Q: Why choose Sinhai accessories over generic options?
A: Sinhai supplies both the PC sheets and the matching profiles from the same production system. This removes compatibility uncertainty between sheet and fitting and ensures consistent batch quality across your order.
Q: What panel thicknesses do your accessories fit?
A: Profiles are available to match panel thicknesses from 4 mm to 20 mm, covering hollow, solid, and multiwall polycarbonate sheet types.
Q: Can I order a specific color, such as blue?
A: Yes. Custom colors can be matched to the panels you have ordered. Include your color requirement when submitting your inquiry.
Q: Can the profiles be cut to 5 m instead of the standard 6 m?
A: Standard stock length is 6 m. Cutting to 5 m is available as a processing service — request it when placing your order.
Q: Do you hold stock for fast delivery?
A: Transparent color profiles are available from stock. Custom colors are produced per order within 7–15 working days.
Q: How do I verify UV protection on polycarbonate profiles?
A: Quality PC profiles use a co-extruded UV layer. You can verify this through manufacturer documentation — Sinhai provides full technical support on request.
Ready to order or need a free sample with plastic sheet accessories? Contact the Sinhai team at [email protected].
⭐⭐⭐⭐⭐ · August 12, 2026
Central Asia - Uzbekistan Focus (Customization & UV Resistance)
Impressive customization capabilities! We ordered the customized Double‑wall Narrow Grid sheets with Double Circular Edges for our recent urban project in Tashkent. The fit and finish are exceptional. Most importantly, the use of high‑quality 3R virgin raw materials provides the thermal stability and UV protection needed for the intense Uzbek sun. A top‑tier partner for Central Asian infrastructure.
⭐⭐⭐⭐⭐ · July 25, 2026
South America - Corrugated Selection (Volume & Patent)
The best selection of corrugated profiles in the market. Having access to 70+ free molds saved us significant tooling costs. We are extremely pleased with the Trapezoidal 1000 and the 1060 Wave/Trapezoidal sheets in Bronze and Yellow; there is zero color deviation across the entire batch. Furthermore, their Patented Reed Sheets have given our architectural projects a unique, high‑end texture that no other supplier can offer.
⭐⭐⭐⭐⭐ · June 18, 2026
Southeast Asia - Solid Sheet (Durability)
Our go‑to supplier for Solid Polycarbonate Sheets. In the humid and high‑heat environment of Southeast Asia, these solid panels maintain perfect transparency and high impact resistance. The quality of the resin is evident, and the service is always efficient。