Rooftop Solar Mounting Systems

Engineered Solutions for Industrial & Commercial Rooftops

Engineered rooftop mounting systems designed to support photovoltaic modules while ensuring roof safety, load control, and long-term durability.

Tianjin Junchuang Steel Co., Ltd. manufactures rooftop solar mounting structures for metal roofs and concrete roofs, focusing on structural safety, waterproof performance, and long-term outdoor durability.

Send Inquiry Now
Rooftop solar mounting systems

Typical Rooftop Solar Mounting System Structure

A complete rooftop solar mounting system consists of structural profiles, support frames, connection components, and fastening hardware — engineered to work together as one system.

3d city solar energy system 600nw 2654866289

Application Scenarios

Designed for Commercial, Industrial, and Residential Rooftops

Systems can be designed for both new buildings and existing rooftops, including metal roofs, concrete flat roofs, and tiled residential roofs.

Structural Features

Designed for Roof Safety and Load Control

Rooftop solar mounting systems are engineered to balance structural strength with roof load limitations, ensuring safe installation without excessive roof stress.

Key structural features include:

  • Lightweight steel or aluminum structural design
  • Secure fixation without roof penetration (where applicable)
  • Optimized layout for efficient module arrangement
f66151033abb00530191abe8bef5cca0

System Components Overview

Engineered Components for Stable Solar Structures

A solar mounting system is not only defined by steel profiles, but by how each component works together to ensure structural stability, load transfer, and long-term outdoor performance.

stainless steel t bolt

Stainless Steel T-Bolt

  • Origin: China

  • Standards: GB/T 37-1988 (Standard for T-slot bolts), GB/T 3098.1-2010 (Mechanical performance of fasteners), GB/T 5782-2000 (Bolt dimensions), DIN 188 (German standard), ASME B18.5 (American standard), JIS B 1166 (Japanese standard)

  • Material: Stainless steel, commonly A2-70 grade

  • Model: M5 to M48 thread sizes

  • Specifications: Tensile strength ≥ 520MPa

  • Other: Stainless steel bolts with high corrosion resistance, commonly used for carbon steel and stainless steel materials.

stainless steel tie rod

Stainless Steel Tie Bar

  • Origin: China

  • Standards: GB/T 4240-2009 (Common standard in China), ASTM (American standard), JIS (Japanese standard)

  • Material: AISI stainless steel, commonly 304, 316, 316L

  • Model: 304, 316, 316L

  • Specifications: High corrosion resistance, suitable for welding without annealing for 316L

  • Other: 316 steel contains molybdenum for enhanced chloride resistance.

stainless steel hex socket bolt

Stainless Steel Internal Hexagon Bolt

  • Origin: China

  • Standards: GB/T 70.1-2008, ISO 4762:2004, DIN 912

  • Material: Austenitic stainless steel, commonly SUS202, SUS304, SUS316

  • Model: M1.6 to M36 thread sizes, common models like M3×8, M4×10

  • Specifications: Full thread and half thread types, A2-70 or A4-70 performance grades

  • Other: A2-70 grade commonly used for good corrosion resistance.

stainless steel base Support

Stainless Steel Base

  • Origin: China

  • Standards: ASTM A240/A240M, EN 10088-2, GB/T 3280

  • Material: Stainless steel, commonly 304 and 316L

  • Model: Custom as per design requirements

  • Specifications: 304 stainless steel has ≥18% chromium and ≥8% nickel for general corrosion resistance

  • Other: 316L contains molybdenum for enhanced chloride resistance, often used in marine or chemical fields.

aluminum alloy w shaped gutter bipv

Aluminum Alloy W Water Tank

  • Origin: China

  • Standards: GB/T 2518-2019

  • Material: Aluminum alloy, commonly 6063-T5

  • Model: W type, M type

  • Specifications: Thickness 0.5–1.2mm, width 138mm, load capacity 3.5kN/m²

  • Other: Customizable length, e.g., 6.6m or standard 80cm.

aluminum alloy guide rail (2)
Aluminum Alloy Rail & Connector
aluminum alloy guide rail connector(2)
aluminum alloy guide rail
aluminum alloy u shaped guide rail

Aluminum Alloy Rail and Connector

  • Origin: China

  • Standards: GB/T 32182-2023, GB/T 26494-2023, GB/T 3880 series

  • Material: Aluminum alloy, commonly 6063-T5/T6, 6061-T6

  • Model: 6063-T5, 6061-T6, 5083-O

  • Specifications: Tensile strength ≥ 175MPa for 6063-T5, ≥ 260MPa for 6061-T6

  • Other: Used in lightweight rails and components for rail transportation and other structures.

aluminum alloy standing seam clamp (2)
aluminum alloy standing seam clamp
aluminum alloy mid clamp & edge clamp

Aluminum Alloy Clamps and Blocks

  • Origin: China

  • Standards: GB/T 12167-1990, GB/T 3880.3-2024

  • Material: Aluminum alloy, commonly 5052, 6061, 7075

  • Model: Custom based on application

  • Specifications: Good tensile strength and corrosion resistance

  • Other: Used in electrical work and other industrial applications.

hot dip galvanized solar bracket

Hot-Dip Galvanized Photovoltaic Bracket

  • Origin: China

  • Standards: JG/T 490-2016, GB/T 13912-2002

  • Material: Carbon structural steel, commonly Q235B

  • Model: Custom based on design requirements

  • Specifications: Corrosion protection layer thickness not less than 65 microns

  • Other: Surface treatment should reach rust removal level Sa2 1/2 according to GB 8923-88.

hot dip galvanized angle bracket

Hot-Dip Galvanized Angle Bracket

  • Origin: China

  • Standards: National standards, e.g., GB

  • Material: Commonly Q235B steel

  • Model: 5x50x(50+50)mm, 5x50x(70+50)mm, 6x80x(100+60)mm

  • Specifications: Hole spacing details like 11×30/13x30mm, customizable based on client drawings

  • Other: Products available with customized hole spacing, depending on project requirements.

hot dip galvanized hex socket bolt (2)

Hot-Dip Galvanized Hexagon Bolt

  • Origin: China

  • Standards: GB/T 70.1-2008, DIN 912, ISO 4762, ANSI/ASME B18.3

  • Material: Carbon steel (e.g., Q235), alloy steel (e.g., AISI4140, 35CrMo), stainless steel (e.g., AISI304, AISI316)

  • Model: M6×20-8.8-HDZn

  • Specifications: Thread sizes from M1.6 to M36

  • Other: Performance grades such as 4.8, 8.8, 10.9, 12.9.

hot dip galvanized triangular connector

Hot-Dip Galvanized Triangle Connector

  • Origin: China

  • Standards: National standards (GB), industry norms

  • Material: Steel, commonly Q235B, with hot-dip galvanizing or zinc-aluminum-magnesium alloy coating for corrosion resistance

  • Model: Custom based on client drawings

  • Specifications: Standard size like 150654.0

  • Other: Custom-made based on application for photovoltaic brackets or building structures.

hot dip galvanized gutter clamp
hot dip galvanized module square tube clamp

Hot-Dip Galvanized Water Tank Clamp

  • Origin: China

  • Standards: GB/T 12755-2008, GB/T 13912

  • Material: Q235B carbon steel

  • Model: Custom based on design requirements

  • Specifications: For galvanized steel, thickness and coating specifications apply

  • Other: Based on specific application needs, material and coating may vary.

hot dip galvanized roof hook

Hot-Dip Galvanized Roof Hook

  • Origin: China

  • Standards: Enterprise or national standards, such as Baosteel hot-dip galvanized products

  • Material: Hot-dip galvanized steel or stainless steel

  • Model: Commonly 470 type, with customizable base height (60mm, 65mm, 75mm)

  • Specifications: Widths like 12.5mm or 14.5mm

  • Other: Suitable for metal roofing systems, customizable for height, width, and thickness.

roof tile hook

Roof Tile Hook

  • Origin: China

  • Standards: JIS C8955:2017 (Japanese standard), or national standards like GB/T

  • Material: Corrosion-resistant, high-strength materials like aluminum alloy (AI6005-T5) or stainless steel (SUS304, SUS316L)

  • Model: Customized by manufacturer, e.g., “AHWH-WG-001”

  • Specifications: Span range 1.2m–3.0m, wind pressure resistance 60m/s

  • Other: Varies greatly based on model and manufacturer specifications.

zinc aluminum magnesium cable tray

Zinc-Aluminum-Magnesium Cable Tray

  • Origin: China

  • Standards: GB/T 13912-2020, GB/T 2518-2019, GB/T 21764-2008

  • Material: Steel with zinc-aluminum-magnesium coating

  • Model: ZM275g (zinc-aluminum-magnesium coating weight)

  • Specifications: Width × Height (e.g., 50×50mm, 100×100mm)

  • Other: Corrosion resistance up to 5000 hours in salt spray testing.

zinc aluminum magnesium walkway grating

Zinc-Aluminum-Magnesium Step Plate

  • Origin: China

  • Standards: YB/T 4761-2019 (for low aluminum zinc-aluminum-magnesium), YB/T 4634-2017 (for high aluminum)

  • Material: SGS51D-150G, ZMA275, AZM100, AZM150

  • Model: Custom sizes for applications

  • Specifications: Thickness 0.5mm to 1.0mm, customized length

  • Other: Used for photovoltaic support systems and specific applications requiring corrosion resistance.

Zinc-Aluminum-Magnesium Cable Tray

Zinc-Aluminum-Magnesium Bracket

  • Origin: China

  • Standards: T/CSTA 0077—2024, YB/T 4634-2017, YB/T 4761

  • Material: Zinc-aluminum-magnesium coated steel plate

  • Model: 4141-4162, 41522.0

  • Specifications: Length customizable, wall thickness 1.5-2.5mm

  • Other: Similar specifications as in previous bracket information.

Zinc-Aluminum-Magnesium Secondary Water Channel

Zinc-Aluminum-Magnesium Water Tank Sub-Support

Origin: China

Standards: National standards (GB)

Material: Q235B steel, zinc-aluminum-magnesium coating

Model: U-type, M-type

Specifications: Thickness 0.5mm to 1.0mm

Other: Used for BIPV systems or sunroom brackets.

color steel roof sheet

Color Steel Roof Sheet

hot dip galvanized triangular connector, purlin connector, base

Hot-Dip Galvanized Triangular Connector, Purlin Connector, Base

Designed as a Complete System

Designed as a Complete Rooftop System

All rooftop components are designed to work together as a unified system, ensuring:

Send Inquiry Now
13fba05c 71dd 4b14 8869 4948f0bf53a8

Customization Capability

Customization Capability

Rooftop mounting systems can be customized according to:

  • Roof type and structure
  • Module layout and tilt angle
  • Local building codes and standards

Engineering support is provided during the project evaluation stage.

customization capability

Manufacturing Facilities & Equipment

We operate advanced automated manufacturing equipment for solar mounting systems, including laser cutting and punching machines, precision welding systems, and cold roll-forming production lines.

Backed by years of manufacturing experience and continuous technical development, our engineering and production teams provide stable product quality and professional support throughout each project.

dsc01322
dsc01314
dsc01236
dsc01229
fa17bff08566661e5414134444625b92
51266f92400eca45679763e49859f7d7
9230203be3f38f479477378ad1daff4d
84283dcfa85c41480d21e673f47f5144
pre shipment structural component inspection1
pre assembly fit check for rooftop mounting components
zinc coating thickness test before shipment
pre shipment structural component inspection1

Quality Control & Shipment Inspection

Before shipment, rooftop solar mounting components undergo on-site inspection and testing to verify dimensional accuracy, coating thickness, and component compatibility.

Quality checks include

  • Zinc or zinc-aluminum-magnesium coating thickness measurement
  • Structural profile dimension verification
  • Pre-assembly fit checks for mounting components

These inspection procedures help ensure that delivered products meet confirmed specifications and are ready for efficient on-site installation.

Discuss Your Project

Export Packaging & Delivery

Ready for International Shipment

Ground-mounted solar mounting components are packaged according to export logistics standards to ensure safe transportation and efficient unloading on site.

export packaging & delivery5
export packaging & delivery5
未命名 1
export packaging & delivery5 6
export packaging & delivery 6

Project Installation & Site Acceptance

Verified Performance on Real Rooftop Projects

After delivery, rooftop solar mounting systems are installed and inspected on site
to verify structural alignment, installation accuracy, and overall system stability.

Discuss Your Project
completed rooftop solar mounting installation (3)
completed rooftop solar mounting installation (5)
completed rooftop solar mounting installation (2)
completed rooftop solar mounting installation (1)
completed rooftop solar mounting installation (4)
completed rooftop solar mounting installation (6)