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ProductsWe are a manufacturing enterprise specializing in profile fabrication and advanced steel processing, with established scale and strong capabilities. Currently, we employ over 100 staff and boast a highly skilled service team. Leveraging years of experience in profile processing and a dedicated R&D team, we continuously develop photovoltaic mounting systems that offer high reliability and cost-effectiveness. In addition to providing customers with standardized PV mounting products, we also deliver comprehensive system design and related services.
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About UsGuojian (Tianjin) Iron & Steel Co., Ltd. was established in November 2020 with a registered capital of RMB 50 million. Located in Jinghai District, Tianjin, the company has an annual production capacity of 420,000 metric tons. We are a manufacturing enterprise specializing in the production of structural steel products and the deep processing of steel materials.
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SupportA scientifically sound management system and state-of-the-art production equipment enable us to deliver higher-quality services to our customers.
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BlogWith a considerable scale and strong capabilities, we currently employ over 100 staff and boast a highly skilled service team. We continuously research and develop photovoltaic mounting systems that offer high reliability and cost-effectiveness.
Providing design and services for photovoltaic mounting systems to clients.
Explore More →Products
We are a manufacturing enterprise specializing in profile production and advanced steel processing, with established scale and strong capabilities. Currently, we employ over 100 staff and boast a highly skilled service team. We continuously research and develop photovoltaic mounting systems that offer high reliability and cost-effectiveness.
Ground-mounted power station
Flexible photovoltaic mounting system
Adjustable photovoltaic mounting system
Fish–Solar Complementarity
Photovoltaic Carport
Photovoltaic Mounting Structures and Accessories
China boasts exceptionally abundant solar energy resources, with a theoretical potential equivalent to 170 billion tonnes of standard coal per year, indicating vast prospects for the development and utilization of solar energy. Situated in the Northern Hemisphere, China spans more than 5,000 kilometers from north to south and over 5,000 kilometers from east to west, providing an extensive geographical expanse rich in solar resources. In most regions, the annual average daily solar radiation exceeds 4 kilowatt-hours per square meter, with Tibet recording the highest levels at up to 7 kilowatt-hours per square meter.
Flexible photovoltaic mounting system
It is suitable for mountainous and highly undulating terrain and is unaffected by factors such as vegetation height. It is also well-suited for fish ponds, tidal flats, and similar areas, overcoming the limitations of traditional support structures that are constrained by water depth and site size. By leveraging the advantages of flexible support systems capable of spanning 10 to 30 meters, combined with options such as the addition of intermediate support columns, this solution addresses the challenges associated with the construction and installation of conventional support structures in fish ponds, tidal flats, and other such environments.
Adjustable photovoltaic mounting system
The tilt angle at which a photovoltaic array receives the maximum solar irradiance varies over time. For grid-connected PV systems with fixed-mounted arrays, the tilt angle is typically set to the value that maximizes annual irradiation. Fixed–adjustable systems, on the other hand, build upon the fixed configuration by allowing the tilt angle to be adjusted across different months or seasons to further enhance power generation. By reconfiguring the array’s tilt every quarter or every six months, greater solar irradiance can be captured. Compared with fixed mounting structures, this approach can substantially increase the project’s electricity output and financial returns.
“The ‘Fishery–Photovoltaics Integrated’ model creatively integrates photovoltaic renewable energy generation with aquaculture, giving rise to a new development paradigm that delivers triple benefits—abundant fish yields, clean electricity, and environmental protection. This innovative approach not only directly drives the transformation and upgrading of China’s aquaculture sector but also significantly accelerates the country’s energy structure adjustment, advances the national energy revolution, and fundamentally addresses the persistent smog problem plaguing China today. Under the ‘Fishery–Photovoltaics Integrated’ model, photovoltaic power generation is seamlessly combined with aquaculture: photovoltaic panels are installed on the water surface while fish and shrimp are farmed beneath, creating a green, eco-friendly revolution that enables parallel development of aquaculture and power generation.”
Rooftop photovoltaic systems make efficient use of underutilized building rooftops, generating economic benefits and improving energy-saving and emission-reduction performance. Moreover, the electricity produced by these systems can be used directly, allowing users to take advantage of preferential tariff policies offered by the power plant investors, thereby reducing electricity costs and delivering tangible financial savings. Based on field test results from numerous PV application projects, all types of rooftop PV power plants demonstrate a “warm in winter, cool in summer” effect: indoor temperatures can be lowered by 2 to 5 degrees Celsius in summer, while in winter they help prevent heat loss from indoors.
Photovoltaic Mounting Structures and Accessories
Rooftop photovoltaic systems make efficient use of underutilized building rooftops, generating economic benefits and improving energy-saving and emission-reduction performance. Moreover, the electricity produced by these systems can be used directly, allowing users to take advantage of preferential tariff policies offered by the power plant investors, thereby reducing electricity costs and delivering tangible financial savings. Based on field test results from numerous PV application projects, all types of rooftop PV power plants demonstrate a “warm in winter, cool in summer” effect: indoor temperatures can be lowered by 2 to 5 degrees Celsius in summer, while in winter they help prevent heat loss from indoors.
Projects
We continuously develop photovoltaic mounting systems that offer high reliability and cost-effectiveness. Leveraging years of experience in profile processing and a dedicated R&D team, we not only provide customers with standardized PV mounting products but also deliver comprehensive system design and related services.
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SINCE2020
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Providing design and services for photovoltaic mounting systems to clients.
View more →ABOUT US
Guojian (Tianjin) Iron and Steel Co., Ltd.
Guojian (Tianjin) Iron & Steel Co., Ltd. was established in November 2020 with a registered capital of RMB 50 million. Located in Jinghai District, Tianjin, the company has an annual production capacity of 420,000 metric tons. As a specialized manufacturer of structural steel products and a provider of advanced steel processing services, we have grown to a considerable scale and strength, employing more than 100 staff and maintaining a highly skilled service team. We continuously research and develop photovoltaic mounting systems that offer high reliability and cost-effectiveness.
Registered capital of RMB 50 million
The company covers an area of 20,000 square meters.
The company’s products are exported to more than 40 countries and regions.
Technical Strength
We continuously develop photovoltaic mounting systems that offer high reliability and cost-effectiveness. Leveraging years of experience in profile processing and a dedicated R&D team, we not only provide customers with standardized PV mounting products but also deliver comprehensive system design and related services.
Production capacity
As a manufacturing enterprise specializing in profile production and advanced steel processing, we have achieved a considerable scale and strong capabilities. With a workforce of over 100 employees and a highly skilled service team, we continuously develop photovoltaic mounting systems that offer high reliability and cost-effectiveness, leveraging our many years of experience in profile fabrication and our dedicated R&D team.
R&D Innovation
We currently employ over 100 staff and boast a highly skilled service team. Leveraging years of experience in profile processing and a dedicated R&D team, we continuously develop photovoltaic mounting systems that offer high reliability and cost-effectiveness.
Quality Control
Machining can be performed based on customer drawings, and the customer’s design can also be optimized and reconfigured according to project requirements, thereby enhancing the cost-effectiveness of the photovoltaic mounting system while meeting the load requirements of the project site.
NEWS
Blog
2026-03-16
2026-03-16
Three Mandatory National Standards for Photovoltaics Officially Come into Effect on March 1
2026-01-19
Guojian (Tianjin) Iron and Steel Co., Ltd. was established in November 2020.
2026-01-19
With a highly skilled service team, we continuously develop products with high reliability.
Phone:022-59656011
Email:1372374728@qq.com
Address: No. 2, Expressway Auxiliary Road, Tianyu Science and Technology Park, Jinghai District, Tianjin
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