Products

Guojian Steel Co., Ltd. is a manufacturer and supplier specializing in Space Frame Steel Structure for Large Venues. The company handles high-volume orders and offers customization, wholesale, and contract manufacturing services for various space frame components. Equipped with comprehensive production lines, the company produces bolted-ball and welded-ball space frames suitable for large-span public buildings such as sports arenas and exhibition centers. Production strictly adheres to national standards, with options for anti-corrosion and fire-resistant treatments. The company supports detailed design refinement and provides components designed for easy transport and on-site assembly, delivering complete space frame solutions for major public projects both domestically and internationally.

Guojian (Tianjin) Steel Co., Ltd. is a specialized manufacturer of photovoltaic (PV) purlin connectors, offering bulk purchasing, custom non-standard specifications, and free samples. Designed to fit the company's own C, Z, U, and "J"-shaped steel purlins, these connectors are made from high-strength Q355B steel and feature a dual anti-corrosion coating (hot-dip galvanizing or Zinc-Aluminum-Magnesium alloy), ensuring 25 years of rust resistance in outdoor environments. They feature standardized pre-drilled holes for rapid splicing and purlin extension, effectively distributing wind and snow loads to stabilize the entire PV mounting structure. The company exports to over 20 countries across Europe, the Americas, and Southeast Asia, consistently undertaking a wide range of PV engineering projects.

Guojian (Tianjin) Steel can directly supply customized Ground Screw Anchors from the factory, meeting the large-scale procurement, project bidding and prototype design requirements for photovoltaic power stations, car shelters and energy storage steel structures. Our design is based on the coupling mechanics principle of piles and soil, and adopts national standard pipes, fully automatic continuous flight welding and complete hot-dip galvanizing process.

Guojian Steel is a primary supplier of Truss Steel Structure, offering bulk purchasing, custom fabrication, and wholesale of truss components, as well as manufacturing based on client-provided drawings. We independently produce a wide range of long-span truss steel structures—including prefabricated components for factory roofing, stadiums, bridges, and municipal projects—that combine high strength, lightweight properties, and corrosion resistance. Our products feature factory prefabrication for convenient on-site assembly and are available in Q235B or Q355B steel grades with options for hot-dip galvanizing and anti-corrosion coatings. With controllable delivery schedules, our solutions are suitable for industrial buildings, public venues, and canopy structures, and we provide integrated services covering detailed design, fabrication, and delivery.

Guojian (Tianjin) Steel is a major manufacturer that offers services such as batch procurement for engineering projects, detailed design optimization, and sample testing. Our Reinforced Cast‑in‑place Ground Pile is reinforced with national standard steel bars, featuring high load-bearing capacity and excellent anti-sagging performance. It is suitable for soft soil foundations, high-load photovoltaic power stations, large photovoltaic car shelters, and steel structure factory building foundations.

Guojian (Tianjin) Steel Manufacturer has its own independent warehousing and processing lines, specializing in the production of Square Steel Tubes suitable for photovoltaic (PV) steel structures. We offer a variety of product specifications and support pre-processing services, including on-demand cutting, stamping and bending. Our inventory is sufficient and production scheduling is flexible. We provide a one-stop supply solution covering photovoltaic installation components and foundation structures, and are equipped with complete product technical documentation to meet the inspection, acceptance and bid document requirements of the projects.