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Double involution C-type steel photovoltaic mounting system
Double involution C-type steel photovoltaic mounting system

Double involution C-type steel photovoltaic mounting system

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Product introduction
DOUBLE INVOLUTION · C-TYPE STEEL · PV MOUNTING
Double involution C-type steel photovoltaic mounting system
Double involution C-type steel photovoltaic mounting system is an advanced structural solution featuring C-section steel with rolled edges on both the upper and lower flanges — a design that provides superior strength-to-weight ratio compared to standard C-section profiles. Manufactured from high-strength Q355B steel with hot-dip galvanized coating (≥85μm), the double involution profile enhances bending resistance and torsional stability, enabling longer spans and reduced material consumption. The rolled edges also improve connection reliability by providing larger bearing surfaces at bolted joints. This system is engineered for large-scale ground-mounted PV plants where structural efficiency and cost optimization are critical. Compatible with module tilt angles from 10° to 50°, the system supports wind loads up to 55m/s and is designed for a 25-year service life in diverse environmental conditions.
CORE ADVANTAGES
Enhanced structural efficiency
Double rolled edges increase section modulus by 25-35% compared to standard C-sections, enabling longer spans with less steel.
Superior torsional stability
The involute edge design resists twisting under asymmetric loads, maintaining module alignment in high-wind conditions.
Hot-dip galvanized protection
85μm+ zinc coating provides 25-year corrosion protection with minimal maintenance requirements.
Optimized connection design
Rolled edges provide larger bearing surfaces at bolted joints, reducing stress concentrations and improving load transfer.
Material weight reduction
Achieves equivalent load capacity with 15-20% less steel compared to conventional C-section systems.
Rapid assembly system
Pre-punched holes and standardized connections enable fast installation with reduced labor requirements.
Material Q355B steel
Profile Double involution C-section
Finish HDG ≥85μm
Tilt angle 10° – 50°
Wind load ≤55m/s
Design life 25 years
PRODUCT SPECIFICATIONS
Primary material Q355B high-strength steel (Q235B optional)
Profile type Double involution C-section with rolled upper and lower flanges
Section size range 80x40x15x2.5mm · 100x50x20x3.0mm · 120x60x20x3.5mm (custom)
Surface finish Hot-dip galvanized per ASTM A123 / ISO 1461, min 85μm
Tilt angle range 10° – 50° (fixed) · adjustable options available
Module compatibility Standard 60-cell, 72-cell, 78-cell panels · portrait or landscape
Wind load capacity Up to 55m/s (tested per EN 1991-1-4)
Snow load capacity Up to 1.8 kN/m² (180 kg/m²)
Span capacity 3.0m – 5.5m (depending on section and load)
Foundation types Ground screws, driven piles, concrete footings
Design standards IEC 62817, EN 1991, ASCE 7, GB 50017
Design life
APPLICATION SCENARIOS
Utility-scale solar farms – Large ground-mounted PV plants requiring structural efficiency and cost optimization.
Industrial PV projects – Solar installations on brownfield sites with demanding load requirements.
Agrivoltaic systems – Elevated configurations allowing agricultural activities beneath solar panels.
High-wind zones – PV arrays in areas requiring exceptional structural stability and wind resistance.
Renewable energy zones – Solar power generation in designated renewable energy development areas.
FREQUENTLY ASKED QUESTIONS
✦ What is the structural advantage of the double involution design?
The double involution (rolled edges on both flanges) increases the section's moment of inertia and radius of gyration, providing 25-35% greater bending resistance than standard C-sections of the same weight. This allows longer spans between supports, reducing the number of foundations and overall system cost.
✦ How does this system compare to standard C-section in terms of material usage?
The double involution profile achieves equivalent or greater load capacity with 15-20% less steel compared to standard C-section systems. This material efficiency translates to lower transportation costs, reduced foundation requirements, and overall project cost savings.
✦ Is the system compatible with both portrait and landscape module orientations?
Yes. The system supports both portrait and landscape configurations. The modular rail and clamp design allows for flexible module arrangement to optimize land use and electrical array design.
✦ What is the maximum span achievable with this system?
Maximum span depends on section size, load conditions, and site-specific wind/snow loads. For standard configurations using 100x50x20x3.0mm section with moderate loads, spans of 4.0-5.0m are achievable. For heavier loads or higher wind zones, reduce spacing or increase section size. Engineering load tables are provided for each project configuration.
INSTALLATION GUIDELINES
Verify section orientation during installation; the double involution profile has a specific top and bottom orientation for optimal load distribution.
Use galvanized or stainless steel fasteners with appropriate torque values to prevent thread stripping and ensure connection integrity.
For long-span configurations, install temporary bracing during construction to maintain alignment until all connections are secured.
STORAGE & MAINTENANCE
Store steel components on level, elevated racks with adequate ventilation to prevent moisture accumulation and white rust formation.
Inspect galvanized coating for damage during transport and handling; apply zinc-rich touch-up paint to any exposed steel prior to installation.
Annual inspection of bolted connections and foundation integrity is recommended for long-term system performance.
Double involution C-type PV system · Q355B · HDG 85μm · 10-50° tilt · 55m/s wind · 25-year life
Physical Properties
Type Photovoltaic stents
Material Material Carbon steel
Surface finishing/treatment

Pre-galvanized 8um/ Electro zinc Plating（≥12um）

Hot -dip galvanized（＞60um）

Plastic-spayed（＞60um）

Power coating

Dimension range

customizable is available

 Width Customizable is available
Side Rail Height
Length
Thickness/wire diameter
Max. Working Load
Accessories/related products
Product Features

1.Strong adaptability

2. Easy installation

3. High structural strength
Color

Design wind pressure: 0.55KN/㎡

Design snow pressure: 0.5KN/㎡

Service life: 30 Years
Enviroment demmand
Application Fish ponds or all kinds of terrain
About us
Jiangsu Youming Group Co., Ltd.
Jiangsu Youming Group Co., Ltd.

Jiangsu Youming Group Co., Ltd. was established in 2015 and is located in the Taidong Industrial Park, Shiyuan Town, Dongtai City. We are China Custom Double involution C-type steel photovoltaic mounting system Suppliers and OEM/ODM Double involution C-type steel photovoltaic mounting system Factory. It is a enterprise specializing in the research and development and production of cable trays. It is a innovative high-tech enterprise in Jiangsu Province. With a registered capital of 50 million RMB, it covers an area of 60 acres and has a production workshop of over 26,000 square meters, with an annual production capacity of more than 30,000 tons of cable trays.

In the increasingly refined cable tray market, the company has steadily advanced to the forefront of the industry, equipped with fully automatic production lines. Its main include longitudinal and transverse shearing lines, automatic forming lines, automatic welding lines, automatic riveting lines, laser cutting and CNC turret punching lines, and automatic spraying lines. The products are mainly divided into several series such as stainless steel, aluminum alloy, hot-dip galvanized, and powder-coated/fireproof, and various specifications and models such as trough type, ladder type, perforated type, and mesh type. The products are widely used in infrastructure, transportation, communication, power (including wind, photovoltaic and thermal power, machinery, metallurgy, shipping, chemical, pharmaceutical, food and other fields. The company has its own testing center, and every test from raw material procurement to product delivery undergoes quality inspection, ensuring that the product quality reaches the high level in the industry. After years of market expansion, it has established good cooperative relationships with many famous domestic enterprises, providing customers with comprehensive product selection services and winning high recognition and trust from customers.

The company attaches great importance to production and technological research and development and innovation. With talent and technology as the support, it has over 150 skilled employees, including more than 50 technical backbone members. It has a design and R&D team, advanced enterprise management, and an efficient sales team. The company has passed the ISO 9001:2015 quality management system standard certification, ISO 14001:2015 environmental system standard certification, ISO 45001:2018 occupational health and safety system standard certification, and EU CE certification It has obtained multiple independent intellectual property rights and patent technologies and is in a high position in technological innovation in the industry.

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