Clarify the Needs
Purpose:
Is it a building (factory, stadium, residence) or equipment (racks, platforms, racks)?
Load-bearing type: static loads, dynamic loads (such as cranes), wind and snow loads, etc.
Environment:
Corrosive environments (coastal areas, chemical industrial zones) require enhanced corrosion protection.
Low-temperature or high-temperature environments require weather-resistant steel (such as Q355ND).
Core Material Selection
Steel Grades:
Common structures: Q235B (cost-effective), Q355B (higher strength, recommended for mainstream use);
Low-temperature/vibration environments: Q355C/D/E (select Grade E for temperatures below -20°C);
High-corrosion environments: Weathering steel (such as Q355NH) or galvanized/painted reinforcement.
Cross-sectional forms:
Steel sections (H-beams, I-beams, angles), square and rectangular tubes, and steel plate combinations are available, depending on load requirements.
Key Performance Indicators
Strength and Toughness:
Inspect material specifications (yield strength ≥ 235 MPa, tensile strength ≥ 375 MPa);
Low-temperature environments require impact energy to meet standards (e.g., ≥ 27 J at -20°C).
Dimensional Deviation:
Check cross-sectional height and thickness tolerances (national standards allow ±1-3 mm).
Surface Quality:
No cracks, interlayers, or rust pits; uniform galvanized layer (≥ 80 μm)
Advantages of steel structures
Excellent Mechanical Properties
High Strength and Lightweight: Q355 steel boasts a yield strength of 345 MPa and weighs only 1/3 to 1/2 that of concrete steel structures, significantly reducing foundation costs.
Outstanding Toughness: Low-temperature impact energy at -20°C ≥ 27 J (GB/T 1591), offering exceptional resistance to dynamic loads (such as crane vibration and wind vibration).
A Revolution in Industrialized Construction
Controllable Precision: Factory CNC cutting tolerance ≤ 0.5 mm, and on-site bolt hole alignment > 99% (reducing rework).
Shortened Construction Schedule: The Shanghai Tower's core tube utilizes steel structure, setting a record of "one floor in three days."
Spatial and Functional Advantages
Flexible Span: The National Stadium (Bird's Nest) achieves an exceptionally large span of 330 meters using 42,000 tons of steel structure.
Easy Retrofitting: Removable beam-column joints (e.g., high-strength bolt connections) support future functional changes.
Environmentally friendly throughout the entire life cycle
Material recycling: 60% of the scrap steel's value is retained after demolition (the 2023 scrap steel recycling price is 2,800 yuan/ton).
Green construction: No maintenance or formwork support is required, and construction waste is less than 1% (concrete structures account for approximately 15%).
Choose A Suitable Steel Structure Company-ROYAL GROUP
At Royal Group, we are a leading partner in Tianjin's industrial metal materials trading sector. With professionalism and a commitment to prioritizing quality, we have established ourselves not only in steel structure, but also in all our other products.
Every product offered by Royal Group undergoes a rigorous quality inspection process to ensure it meets or exceeds the highest quality standards. This helps us provide our customers with reliable and safe products suitable for a variety of applications.
We understand that time is of the essence for our customers, and therefore, our staff and fleet of vehicles are always ready to deliver goods. By ensuring speed and punctuality, we help our customers save time and optimize their construction processes.
Royal Group not only brings confidence in product quality and value, but also demonstrates sincerity in our customer relationships. We offer not only a variety of steel structure, but also a wide range of other products.
Every order placed with Royal Group is inspected before payment. Customers have the right to inspect their products before payment to ensure satisfaction and product quality.
China Royal Corporation Ltd
Address
Bl20, Shanghecheng, Shuangjie Street, Beichen District, Tianjin, China
Phone
+86 15320016383
Post time: Aug-12-2025