Polycarbonate H Connector Profile — Multiwall Sheet Joiner with UV Protection & 10-Year Warranty
Polycarbonate H connector profile from Baoding Sinhai Sunboard Manufacturing Co., Ltd. is a precision-extruded structural joiner that connects adjacent multiwall polycarbonate sheets along their longitudinal edges. Made from 100% virgin PC resin with a co-extruded UV-resistant layer, it covers panel thicknesses from 4mm to 20mm and is available in standard lengths of 2.1m, 5.8m, and 6m. Sinhai holds ISO 9001:2015, CE, RoHS, and UDEM certifications and backs every profile with a 10-year warranty.
What Is a Polycarbonate H Connector Profile?
This profile is an extruded component designed to join two polycarbonate panels — primarily multiwall or twin-wall sheets — at their longitudinal edges. Its double-channel structure with a center rib addresses three practical installation challenges:
- Thermal movement — polycarbonate expands and contracts with temperature changes; the H-shape provides a 3–5mm expansion gap so panels can slide freely without cracking.
- Moisture ingress — the profile acts as a secondary barrier at the joint to reduce the risk of leakage.
- Aesthetic continuity — it creates a clean, uniform finish across large panel surfaces.
Unlike metal alternatives, it forms a thermal bridge-free connection at the joint, which supports the overall insulation performance of the assembly.
Key Technical Properties
The Polycarbonate H connector profile is rated for an operating temperature range of -40°C to +120°C, maintaining ductility in sub-zero conditions. A 50-micron UV protection layer is co-extruded onto the exterior surface to resist yellowing and embrittlement caused by prolonged UV exposure.
Additional technical characteristics:
- High impact strength across the rated temperature range
- Flexural modulus and tensile strength sufficient to resist stress-cracking at the H-bridge
- Internal channel tolerance of ±0.1mm for consistent fit across panel thicknesses
- Initial Yellowness Index (YI) below 1.0 per ASTM E313, confirming raw material purity
Fire performance and light transmission are tested with reference to UL 94, EN 13501, and ASTM D1003 respectively. Specific ratings are available on request.
Product Specifications
| Parameter |
Details |
| Product Type |
H-Type Joiner (Connector Profile) |
| Material |
100% Virgin PC Resin with UV-resistant formula |
| Compatible Panel Thickness |
4mm – 20mm |
| Standard Lengths |
2.1m / 5.8m / 6m |
| Custom Cutting |
Available |
| UV Protection Layer |
Co-extruded, 50-micron |
| Operating Temperature |
-40°C to +120°C |
| Expansion Gap Design |
3–5mm built-in allowance |
| Internal Channel Tolerance |
±0.1mm |
| Standard Color |
Transparent (custom colors available) |
| Warranty |
10 Years |
| Certifications |
ISO 9001:2015, CE, RoHS, UDEM |
Applications
Commercial Architectural Roofing
Used in shopping mall skylights and stadium canopies to connect multiwall sheets. The profile must maintain water tightness at each joint while accommodating wind-load movement across the panel surface.
Industrial Greenhouse Construction
Joins twin-wall panels to reduce thermal loss at the edges and support consistent light diffusion — both relevant to controlled-environment agriculture.
Partitions and Enclosures
In cleanrooms and office dividers, the polycarbonate h connector profile provides a corrosion-resistant joint that tolerates regular cleaning. Sound attenuation at the joint depends on the panel thickness and assembly configuration used.
Why Choose Sinhai PC Profiles?
Sinhai manufactures both the sheets and the profiles, so components are designed and tested to work together. This removes the compatibility uncertainty that comes with mixing suppliers.
- 100% virgin PC resin — no recycled content, so batch-to-batch performance stays consistent.
- Color matching available — profiles can be produced to match the color of your ordered panels.
- Cutting service available — non-standard lengths such as 5m can be prepared before dispatch.
- Stock availability — transparent H profiles are a regularly stocked item.
- One-stop procurement — sheets, profiles, and accessories from a single source.
Standard orders ship within approximately 7 days. For volume requirements, Sinhai operates 3 production bases with 25+ production lines.
Quality Control
Every profile is checked through a structured inspection process before shipment:
- Dimensional tolerance testing using digital calipers — internal channel width must match the specified panel thickness within ±0.1mm.
- UV coating verification via microscopic thickness measurement or spectrophotometry to confirm the co-extruded UV layer is uniform and within specification.
- Yellowness Index (YI) testing per ASTM E313 — initial YI must be below 1.0.
- Mechanical testing — flexural modulus and tensile strength are checked to confirm resistance to stress-cracking at the H-bridge.
These steps are carried out within Sinhai's ISO 9001:2015-certified quality management system.
Installation Tips
- Match profile size to panel thickness precisely. A 10mm panel requires a 10mm H-profile; an oversized fit allows leakage, and an undersized fit creates stress at the panel edge.
- The co-extruded UV side must face outward toward the sun. Profiles are typically marked with a protective film on that surface.
- For low-pitch roofs, apply a neutral-cure silicone sealant at the top and bottom junctions to improve water tightness.
- Leave a 3mm gap per meter between sheet edges inside the profile to accommodate thermal expansion along the panel length.
- Cold curving is possible; keep the bend radius within 175 times the profile thickness.
FAQ
Q1: What panel thicknesses does the H connector profile cover?
A: The profile is available from 4mm to 20mm, matching the full multiwall panel range that Sinhai produces.
Q2: Can the profile be made in a custom color?
A: Yes. Custom colors are available on request, including color-matching to panels ordered from Sinhai.
Q3: Can profiles be cut to a non-standard length such as 5m?
A: Standard stock comes in 2.1m, 5.8m, and 6m lengths. A cutting service is available for non-standard lengths — specify the required length when placing your order.
Q4: Is the transparent H connector profile kept in stock?
A: Yes. Transparent H profiles are a regularly stocked item and are available for fast dispatch.
Q5: How should thermal expansion be managed in long-span roofing?
A: Leave a 3mm gap per meter of panel length between sheet edges inside the profile. This allows panels to slide freely as temperatures change without buckling or putting stress on the joint.
Q6: Why source profiles from Sinhai rather than a separate supplier?
A: Sinhai produces sheets and profiles together, so dimensional tolerances and material properties are matched by design. This reduces installation risk compared to combining components from different manufacturers.
Contact Us
Have a project requiring polycarbonate h connector profile? Send your specifications to [email protected] and our team will respond promptly.