Primary Steel Frame

Product Description Box Section Steel (also known as box girder or hollow section steel) is a high-performance structural member with a closed rectangular or square cross-section, engineered for superior load-bearing capacity, torsional stiffness, and stability in complex force scenarios. Manufactured with Q355B/Q460/Q690 high-strength steel, this product is fabricated by welding two H-beams, steel plates, or rolling steel into a closed box shape (standard sizes: 200×200mm

Product Description A Single Slope Primary Steel Frame is a specialized structural system characterized by a unidirectional roof slope (3%-20%), engineered for efficient drainage, space optimization, and compatibility with attached buildings. Manufactured with Q355B/Q460 high-strength steel (beams, columns) and Q355B connection plates, this product features a single-slope beam design—with one end of the beam higher than the other—supported by columns of varying heights (or a

Product Description A Prefabricated Primary Steel Frame is an efficient, modular structural system engineered for rapid construction, precision assembly, and consistent quality, integrating fully prefabricated components and standardized connections. Manufactured with Q355B/Q460 high-strength steel (beams, columns, node plates) and 10.9-grade high-strength bolts, this product features 95%+ factory prefabrication—all components are CNC-cut, welded, and precision-machined to

Product Description A Crane-Support Primary Steel Frame is a heavy-duty structural system engineered specifically to withstand crane-induced loads (vertical lift load, horizontal braking force, lateral sway), integrating enhanced load-bearing capacity, anti-fatigue performance, and stability. Manufactured with Q460/Q690 ultra-high-strength steel (main beams, columns) and QT450 ductile iron (crane rail supports), this product features reinforced main beams (box-section or

Product Description A Seismic-Resistant Primary Steel Frame is a high-resilience structural system engineered to resist seismic forces (intensity zones 7-9 degrees), integrating energy dissipation, ductile design, and moment-resisting capacity. Manufactured with Q460/Q690 ultra-high-strength steel (beams, columns) and Q355B connection plates, this product features a dual-functional design: rigid bolt-welded joints (moment-resisting capacity ≥800kN·m) to maintain structural

Product Description A Fire-Rated Primary Steel Frame is a high-safety structural system engineered to maintain load-bearing capacity under fire conditions (fire resistance ≥1.5-3 hours), integrating structural performance and fire protection. Manufactured with Q355B/Q460 high-strength steel (beams, columns) and intumescent fireproof coating (dry film ≥1.5mm), this product features a two-layer protection design: the base steel (yield strength ≥345MPa) provides inherent load

Product Description An Asymmetrical Primary Steel Frame is a customized structural system designed for irregular architectural layouts (e.g., L-shaped, U-shaped, or free-form buildings), integrating asymmetric load distribution, spatial flexibility, and structural stability. Manufactured with Q355B/Q460 high-strength steel (beams, columns) and Q355B connection plates, this product features non-uniform span lengths, column heights, or frame configurations, optimized via finite

Product Description A Cold-Formed Primary Steel Frame is a lightweight, cost-effective structural system fabricated from cold-formed steel sections (rolled at room temperature), engineered for low-rise buildings, modular construction, and budget-sensitive projects. Manufactured with high-strength cold-formed steel (Q355, yield strength ≥355MPa) and 8.8-grade high-strength bolts, this product features thin-walled C-section, Z-section, or box-section profiles (beams: 150×50mm

Product Description An Endwall Primary Steel Frame is a specialized structural system designed as the terminal support for industrial buildings, warehouses, or large-span structures, integrating closure, load-bearing, and weather-resistance functions. Manufactured with Q355B/Q460 high-strength steel (beams, columns, bracing) and Q235B connection plates, this product features a portal or rigid-frame design (span 10m-30m) that closes the end of the main building, supporting

Product Description A Straight Column Primary Steel Frame is a standardized and cost-effective structural system featuring columns with uniform cross-sections (constant width and height), engineered for simplicity, ease of fabrication, and wide applicability. Manufactured with Q235B/Q355B high-strength steel (straight columns, I-beam beams) and 8.8/10.9-grade high-strength bolts, this product features straight columns (H-beam or box-section, size: 200×200mm to 600×300mm) with

Product Description A Truss Beam Primary Steel Frame is a high-efficiency, large-span structural system featuring truss-type main beams, engineered to optimize load-bearing capacity, reduce self-weight, and maximize spatial flexibility. Manufactured with Q355B/Q460 high-strength steel (truss chords, web members) and Q355B connection plates, this product adopts a triangular truss structure—composed of upper/lower chords (I-beam or box-section, 200×100mm-500×250mm) and diagonal

Product Description A Tapered Column Primary Steel Frame is an optimized and cost-effective structural system characterized by columns with tapered cross-sections (wider at the base, narrower at the top), engineered to match stress distribution, reduce material consumption, and enhance architectural aesthetics. Manufactured with Q355B/Q460 high-strength steel (tapered columns, I-beam beams) and Q355B connection plates, this product features tapered columns (box-section or H

Product Description A Multi-Span Primary Steel Frame is a scalable and efficient structural system designed for buildings requiring extended floor areas (2-10 spans), integrating modular rigid connections, uniform load distribution, and architectural adaptability. Manufactured with Q355B/Q460 high-strength steel (beams, columns, and purlins) and 10.9-grade high-strength bolts, this product features a series of interconnected single-span rigid frames (span per unit: 12m-30m)

Product Description A Clear Span Rigid Primary Steel Frame is a high-performance structural system engineered for large column-free spaces (span ≥24m), integrating rigid connections, load-bearing optimization, and spatial flexibility. Manufactured with Q355B/Q460 high-strength steel (beams, columns) and Q355B connection plates, this product features a monolithic rigid-frame design—with fully welded or bolt-welded rigid joints between beams and columns—ensuring efficient

Product Description: The Primary Steel Frame product offered by Custom Steel Fabricators is a top-of-the-line structural component designed for use in building construction projects. This essential piece of infrastructure is known for its exceptional durability, making it a reliable choice for long-term structural support. Manufactured by Custom Steel Fabricators, a reputable company known for its high-quality steel products, this Primary Steel Frame is meticulously crafted

Product Description: The Primary Steel Frame product is an essential component in building construction, providing strong support and structural integrity. Made from high-quality steel, the primary steel frame is designed to withstand heavy loads and ensure the stability of the entire structure. With a focus on durability, the primary steel frame offers high strength and long-lasting performance. Its robust construction can endure various environmental conditions and maintain

Product Description: The Primary Steel Frame product offered by Custom Steel Fabricators is a top-of-the-line solution for building construction projects, known for its exceptional durability and high-quality performance. This product features a galvanized surface treatment, ensuring long-lasting protection against corrosion and environmental elements. Constructed with the finest materials and expert craftsmanship, the Primary Steel Frame is designed to provide structural

Product Description: The Primary Steel Frame product is a key component in building construction projects, known for its exceptional load-bearing capacity. Made from high-quality steel, this product is designed to provide robust support and structural integrity to various types of buildings. One of the standout features of the Primary Steel Frame is its high load-bearing capacity, making it ideal for supporting heavy loads and ensuring the stability of the overall structure.

Product Description: The primary steel frame is customizable in size, allowing for flexibility in design and construction. Whether it is for a small residential building or a large commercial complex, the size of the steel frame can be tailored to meet specific project requirements. This customization feature ensures a precise fit and optimal performance. One of the key attributes of our Primary Steel Frame is its exceptional fire resistance. Constructed from steel, a non

Product Description A Uniform Cross-section H-beam (also known as I-beam) is a standardized, high-strength structural steel member with consistent cross-sectional dimensions (flange width × web height) throughout its length, engineered for universal load-bearing applications in steel frames. Manufactured with Q235B/Q355B/Q460 high-strength steel, this product features an H-shaped cross-section—composed of two parallel flanges and a central web—optimized for bending resistance