PC Corrugated Sheet Comparison Guide — Small, Medium & Large Wave
With multiple models of PC corrugated sheets available, how do you choose the most suitable one for your project? This guide provides a comprehensive comparison of the three series — PC760/PC820 (Small Wave), PC840/PC900 (Medium Wave), and PC930/PC970 (Large Wave) — across four dimensions: profile dimensions, structural strength, application scenarios, and cost-effectiveness, helping you make the best decision.
1. Profile Comparison Overview
| Parameter | Small Wave (PC760/PC820) | Medium Wave (PC840/PC900) | Large Wave (PC930/PC970) |
|---|---|---|---|
| Pitch (mm) | 76 / 82 | 84 / 90 | 93 / 97 |
| Wave Height (mm) | 18 | 24 | 30 |
| Effective Width (mm) | 760 / 820 | 840 / 900 | 930 / 970 |
| Thickness Range (mm) | 0.8~2.0 | 0.8~2.5 | 1.0~3.0 |
| Structural Strength | ★★☆☆☆ | ★★★☆☆ | ★★★★★ |
| Daylighting Performance | ★★★★★ | ★★★★☆ | ★★★☆☆ |
| Installation Flexibility | ★★★★★ | ★★★★☆ | ★★★☆☆ |
| Suitable Span | ≤1.0m | ≤1.2m | ≤1.5m |
2. Selection by Application Scenario
Scenario 1: Agricultural Greenhouse / Livestock Farm → Recommended: Small Wave
Agricultural greenhouses have relatively low load requirements for roofing materials but demand high light transmission and installation flexibility. PC760/PC820 small wave sheets are lightweight with high light transmission (Clear 88%), and can adapt to arched and curved roof structures. Recommended thickness: 1.0~1.5mm, available in clear or milky series.
Selection Suggestion: PC820 1.2mm Clear → Vegetable/flower greenhouses; PC820 1.0mm Milky → Seedling greenhouses; PC760 1.5mm Clear → Livestock farm roofing.
Scenario 2: Industrial Factory / Warehouse → Recommended: Medium Wave
Industrial buildings need to balance daylighting and structural strength. PC840/PC900 medium wave sheets feature a 24mm wave height with moderate strength and are compatible with standard color steel tile profiles. Recommended thickness: 1.5~2.0mm, combined with an interval installation scheme (skylight strips + color steel tiles) for optimal cost-effectiveness.
Selection Suggestion: PC840 1.5mm Clear → Light-duty workshop; PC900 2.0mm Clear → Heavy-duty factory; PC840 1.5mm Milky → Electronics workshop anti-glare.
Scenario 3: Stadium / Large-Span Public Building → Recommended: Large Wave
Large-span buildings have strict requirements for roofing material structural strength. PC930/PC970 large wave sheets feature a 30mm wave height with panels up to 3.0mm thick, and when paired with professional fastening systems, meet the most demanding load requirements. Recommended thickness: 2.0~3.0mm, clear series for spaces needing natural light, milky series for spaces requiring light control.
Selection Suggestion: PC970 2.5mm Clear → Stadium roofing; PC930 3.0mm Clear → Exhibition center; PC970 2.0mm Milky → Swimming pool roofing.
3. Cost-Effectiveness Comparison
| Dimension | Small Wave | Medium Wave | Large Wave |
|---|---|---|---|
| Material Cost | Lower | Moderate | Higher |
| Installation Cost | Lower (lightweight, easy) | Moderate | Higher (requires professional installation) |
| Maintenance Cost | Low | Low | Very Low |
| Service Life | 10-15 years | 15 years | 15-20 years |
| Energy Savings | High (excellent lighting) | High (excellent lighting) | Moderate |
4. Installation Key Points Comparison
- Small Wave: Can be directly fixed with self-tapping screws, 1.5 wave overlap, suitable for cold-bending installation on arched roofs
- Medium Wave: Recommended to use specialized screws with EPDM gaskets, 1.5-2 wave overlap, can be mixed with color steel tiles
- Large Wave: Requires specialized large wave fixing brackets and waterproof caps, 2+ wave overlap, professional installation team recommended
5. Selection Decision Process
Step 1: Determine roof slope → Slope <5° not suitable for corrugated sheets (recommend polycarbonate multi-wall sheets); Slope 5-8° choose small wave; Slope 8-15° choose medium wave; Slope >15° all three types work.
Step 2: Determine purlin spacing → Spacing ≤1.0m any type works; 1.0-1.2m choose medium wave or large wave; >1.2m choose large wave.
Step 3: Determine load requirements → Light load (agricultural) choose small wave; Medium load (industrial) choose medium wave; Heavy load (sports/public) choose large wave.
Step 4: Determine lighting needs → High light transmission choose clear series, light diffusion needed choose milky series.
Step 5: Budget assessment → Combine material cost, installation cost, and long-term energy savings to select the optimal solution.
The above is a comprehensive comparison of the three PC corrugated sheet series — PC760/PC820, PC840/PC900, and PC930/PC970. Jintai offers a full range of PC corrugated sheet products and free technical consultation services. For further information or to request samples, please contact us today!
