The structure steel tube industry is witnessing dynamic growth, with improved technical standards and increased demand across construction, automotive, transport, energy, and varied infrastructure sectors. Structure steel tube products, including structural steel tubing, round structural steel tubing, rectangular structural steel tubing, and shaped structural tubing, represent the backbone of modern engineering—delivering unmatched strength, versatility, and precision.
The structure steel tube segment has evolved with enhanced structural grades, tighter dimensional tolerances, and a focus on high-strength product design. Digital manufacturing and advanced cold drawing processes yield tubes with uniform wall thickness, surface finish, and tailored mechanical properties.
Size Range:
OD (mm): 12.7–76.2 | Thickness (mm): 1.5–6.0 | Length (mm): 50–12,000
Standards: EN 10305-1, DIN 2391, JIS G3441, ASTM A519/A519M, GB/T 3639
Grades: E235, E355, St35, St45, St52, SCM415(SCM415H), SCM430(SCM430H), SCM435(SCM435H), 1010, 1020, 4130, 4140, 10#, 20#, 45#, Q345B, etc.
Custom Production: For out-of-range requirements, trial production is available upon agreement.
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Round, rectangular, and shaped structural steel tubing are widely used for columns, beams, roof trusses, and modular assemblies, offering aesthetic and practical advantages over conventional profiles (NSSMC).
High strength row, rectangular, and shaped structure steel tubes offer lightweight, high-rigidity solutions for auto chassis, roll cages, and drive shafts, supporting electrification and emission reduction.
Structural tubes are integral to the frameworks of wind turbine towers, photovoltaic arrays, and energy transport conduits, where reliability and durability are non-negotiable (ResearchGate: Application of Steel Tubes in Wind Turbine Towers).
Parameter | Round Structural Steel Tubing | Rectangular Structural Steel Tubing | Shaped Structural Tubing |
---|---|---|---|
OD / Size Range (mm) | 12–1000 | 10x20–400x600 | Custom profile / up to 600 max dim |
Thickness (mm) | 1.5–60 | 1.5–40 | 2.0–40 |
Length (mm) | 6,000–16,000 (customized) | 6,000–16,000 (customized) | as required |
Grade | Q235B, Q355B, E235, S355J2H | Q235B, Q345B, S355J2H | As specified / Q345B, S355J2H |
Standards | EN10210, EN10219, ASTM A500 | EN10210, EN10219, ASTM A500 | EN10219, Custom |
Surface Treatment | Black, Galvanized, Painted | Black, Galvanized, Painted | Black, Painted, Custom |
CBIES stands as a recognized authority in the structure steel tube sector, delivering precision-engineered, high-strength products that comply with the world's most rigorous standards. With extensive experience, robust quality management, and participation in global industry forums, CBIES ensures customers receive structural steel tubing with consistent performance and traceable quality.
Commitment to EEAT: We draw on published standards (ASTM A500, BSI) and reference credible industry insights (AISC Steel Solutions Center; ScienceDirect: Structural Steel Tube) to ensure Product and Technical Reliability.