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RECTANGULAR TUBE FOR CONSTRUCTION

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RECTANGULAR TUBE FOR CONSTRUCTION
Details
Structural square tubes (SHS) and rectangular tubes (RHS), commonly known as hollow structural sections (HSS), are essential carbon steel hollow profiles for modern construction engineering. With uniform wall thickness, excellent torsional resistance, neat appearance, reliable weldability and high structural rigidity, they are widely applied in building frames, support structures, exterior decoration and civil engineering projects.
Brand:Brisk Steel
Common coatings include painting, galvanized, oiled
Category
Hollow Section
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Description

Tianjin Brisk Steel is one of the manufacturers of Rectangular & Square Steel Tube for Construction in China. Our products are mainly exported to the Middle East, Southeast Asia, Europe, New Zealand, and other regions.If you would like to learn more about our products, feel free to contact us and send your purchase list.

 PRODUCT

Tianjin BRISK STEEL focus on produce and supply hollow section and steel pipe

ASTM A500GRC HOLLOW SECTIONS
BIG SIZE RECTANGULAR TUBES
COLD FORMED EN 10219 HOLLOW SECTION
EN 10210 S355J0H SQUARE STEEL TUBE

Specification of square and rectangular hollow sections

 

OD(MM) THICKNESS(MM) OD(MM) THICKNESS(MM) OD(MM) THICKNESS(MM) OD(MM) THICKNESS(MM)
20*20 1.3 60*120 80*100 90*90 1.50 180*180 3 300*800 400*700 550*550 500*600  
1.4 1.70 3.5-3.75 9.5-9.75
1.5 1.80 4.5-4.75 11.5-11.75
1.7 2.00 5.5-7.75 12-13.75
1.8 2.20 9.5-9.75 15-50
2.0 2.5-4.0 11.5-11.75  
20*30 25*25 1.3 4.25-4.75 12.0-25.0  
1.4 5.0-6.3 100*300 150*250 200*200 2.75 300*900 400*800 600*600 500*700  
1.5 7.5-8 3.0-4.0 9.5-9.75
1.7 50*150 60*140 80*120 100*100 1.50 4.5-9.75 11.5-11.75
1.8 1.70 11.5-11.75 12-13.75
2.0 2.00 12.5-12.75 15-50
2.2 2.20 13.5-13.75  
2.5-3.0 2.5-2.75 15.5-30  
20*40 25*40 30*30 30*40 1.3 3.0-4.75 150*300 200*250 3.75 300*1000 400*900 500*800 600*700 650*650  
1.4 5.5-6.3 4.5-4.75  
1.5 7.5-7.75 5.5-6.3 9.5-9.75
1.7 9.5-9.75 7.5-7.75 11.5-11.75
1.8 11.5-16 9.5-9.75 12-13.75
2.0 60*160 80*140 100*120 2.50 11.5-11.75 15-50
2.2 2.75 13.5-30  
2.5-3.0 3.0-4.75 200*300 250*250 3.75 400*1000 500*900 600*800 700*700  
3.25-4.0 5.5-6.3 4.5-4.75  
25*50 30*50 30*60 40*40 40*50 40*60 50*50 1.3 7.5-7.75 5.5-6.3 9.5-9.75
1.4 9.5-16 7.5-7.75 11.5-11.75
1.5 75*150 2.50 9.5-9.75 12-13.75
1.7 2.75 11.5-11.75 15-50
1.8 3.0-3.75 12-13.75  
2.0 4.5-4.75 15.5-30  
2.2 5.5-6.3 200*400 250*350 300*300 4.5-6.3 500*1000 600*900 700*800 750*750  
2.5-3.0 7.5-7.75 7.5-7.75 9.5-9.75
3.25-4.0 9.5-16 9.5-9.75 11.5-11.75
4.25-4.75 80*160 120*120 2.50 11.5-11.75 12-13.75
5.0-5.75 2.75 12-13.75 15-50
5.75-6.3 3.0-4.75 15.5-30  
40*80 50*70 50*80 60*60 1.3 5.5-6.3 200*500 250*450 300*400 350*350 5.5-6.3 500*1100 600*900 700*800 750*750  
1.5 7.5-7.75 7.5-7.75 9.5-9.75
1.7 9.5-9.75 9.5-9.75 11.5-11.75
1.8 11.5-20 11.5-11.75 12-13.75
2.0 100*150 2.50 12-13.75 15-50
2.2 2.75 15.5-30  
2.5-3.0 3.0-4.75 280*280 5.5-6.3 600*1100 700*1000 800*900 850*850  
3.25-4.0 5.5-6.3 7.5-7.75 9.5-9.75
4.25-4.75 7.5-7.75 9.5-9.75 11.5-11.75
5.0-6.0 9.5-9.75 11.5-11.75 12-13.75
40*100 60*80 70*70 1.3 11.5-20 12-13.75 15-50
1.5 100*200 120*180 150*150 2.50 15.5-30  
1.7 2.75 350*400 300*450 7.5-7.75 700*1100 800*1000 900*900  
1.8 3.0-7.75 9.5-9.75 11.5-11.75
2.0 9.5-9.75 11.5-11.75 12-13.75
2.2 11.5-20 12-13.75 15-50
2.5-3.0 100*250 150*200 3.00 15.5-30  
3.25-4.0 3.25-3.75 200*600 300*500 400*400 7.5-7.75 800*1100 900*1000 950*950  
4.25-4.75 4.25-4.75 9.5-9.75 11.5-11.75
5.0-6.3 9.5-9.75 11.5-11.75 12-13.75
50*100 60*90 60*100 75*75 80*80 1.3 11.5-11.75 12-13.75 15-50
1.5 12.25 15.5-40  
1.7 140*140 3.0-3.75 300*600 400*500 400*400 7.5-7.75 900*1100 1000*1000 800*1200  
1.8 4.5-6.3 9.5-9.75  
2.0 7.5-7.75 11.5-11.75 20-60
2.2 9.5-9.75 12-13.75  
2.5-3.0 11.5-25 15.5-40  
3.25-4.0 160*160 3.00 400*600 500*500 9.5-9.75 1100*1000 1100*1100  
4.25-4.75 3.5-3.75 11.5-11.75 20-60
5.0-5.75 4.25-7.75 12-13.75  
7.5-8 9.5-25 15.5-40  

 

Chemical Element Composition Comparison

 

  • Chemical composition determines the weldability, corrosion resistance and processing performance of black square tubes. The key controlled elements include Carbon (C), Manganese (Mn), Phosphorus (P) and Sulfur (S); low P and S content ensures low impurity and stable steel quality.

 

Standard & Grade

Carbon (C) ≤

Manganese (Mn)

Phosphorus (P) ≤

Sulfur (S) ≤

Characteristic

GB Q235B

0.22%

0.30% - 1.40%

0.045%

0.045%

Balanced composition, good plasticity

ASTM A500 Gr.B

0.26%

0.70% - 1.10%

0.040%

0.040%

Strict impurity control

ASTM A500 Gr.C

0.20%

0.80% - 1.35%

0.040%

0.040%

Higher manganese for better strength

EN 10219 S235JRH

0.17%

0.40% - 1.20%

0.035%

0.035%

Low carbon, excellent weldability

EN 10219 S355J0H

 0.22% 1.60% 0.035% 0.035%

High strength, 0℃ impact resistance
EN 10219 S355J2H 0.22% 1.60% 0.030% 0.030%

Low-temperature toughness (-20℃)

 

Common Standard Steel Grades for Construction SHS & RHS

 

In global construction trade, three mainstream standards are universally adopted: Chinese GB standard, American ASTM standard and European EN standard. These grades cover low-strength conventional construction, medium-load steel structure and high-strength low-temperature resistant building projects. All grades below are the most frequently selected for construction engineering.

 

  • Chinese Standard (GB/T 700 & GB/T 6728): Q235B (General construction), Q355B (High-strength building support)

 

  • American Standard (ASTM A500): Grade B (Medium-load structure), Grade C (Heavy-load building framework)

 

  • European Standard (EN 10219 Cold-formed Hollow Section): S235JR (Ordinary architectural decoration), S355J0H (0℃ low-temperature construction), S355J2H (-20℃ extreme cold region building)

 

Building Classification & Application Scenarios

 

Different steel grades correspond to different building types based on strength, toughness and environmental adaptability. The classification is clear for engineers and purchasers to select suitable SHS and RHS tubes for construction.

 

1. Civil & Light Commercial Buildings

Applicable grades: GB Q235B, EN S235JR. These low-carbon steel grades feature low cost, easy cutting, bending and welding. They are widely used in residential buildings, small shopping malls, temporary construction buildings, fence frames, stair handrails, interior decoration keels and light curtain wall supports.

 

2. Medium-Span Steel Structure Buildings

Applicable grade: ASTM A500 Grade B. With stable mechanical performance and moderate yield strength, this grade is preferred for American-standard industrial workshops, warehouse buildings, logistics storage frames, exhibition halls and outdoor advertising support structures.

 

3. Heavy-Duty & High-Rise Buildings

Applicable grades: ASTM A500 Grade C, GB Q355B. High yield strength and compression resistance enable these tubes to bear heavy load. They are commonly used for high-rise building steel frames, large-span factory trusses, parking garage structures and bridge auxiliary supports.

 

4. Low-Temperature & Harsh Environment Buildings

Applicable grades: EN S355J0H, S355J2H. With certified low-temperature impact resistance, these European-standard tubes are specially used for buildings in northern cold regions, outdoor stadium steel structures, offshore auxiliary buildings and weather-resistant engineering construction.

 

Purchasing & Selection Guidance for Construction Projects

 

  • Low-budget civil construction & decoration: Select GB Q235B or EN S235JR, cost-effective and easy field processing.

     

  • American-standard industrial building: Adopt ASTM A500 Grade B for stable structural performance.

     

  • Heavy-load high-rise & large-span buildings: Choose ASTM A500 Grade C or GB Q355B to meet high bearing requirements.

     

  • European & cold-region construction: Use EN S355J0H and S355J2H to adapt to low-temperature harsh environment.

 

Contact Us

 

For more details about Black Square Tube, please contact us immediately. We will reply to you within 24 hours and provide the best quotation and service! !! We look forward to establishing long-term cooperative relationships with you!

UNCOIL ROLLING MACHINE
HEAT TREATMENT MACHINE
BRISK STEEL YARD
200X200 HOLLOW SECTION PRODUCTION LINES

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