Square Tubes
ASTM A554, CNS 5802

Material: 304, 304L, 316L

Square Tubes Stainless Steel

The YC INOX’s ASTM A554 and CNS 5802 stainless steel square tubes are excellent tubes made of dependable materials such as 304, 304L, and 316L stainless steels. Users may choose the tubes with different outside diameters according to their processing demands, since YC INOX has prepared a wide variety of tube ODs for customer convenience.

Aside from the OD of the tubes, thickness is also an important variable for industrial users. There are 12 sets of thickness values. Users may choose the optimal one based on their requirements. Each thickness value has its own corresponding OD value. Those are all shown in the table. Buyers may refer to the table in this page. Both the OD and the thickness are critical physical variables of the stainless steel square tubes in the industry. Buyers are given a high degree of autonomy with the tube specifications.

It is worth mentioning that, with different choices of the OD and the corresponding thickness values, the tolerance values are also different. Please read the tolerance table carefully before purchasing.


ASTM A554 and CNS 5802 tubes are excellent structural stainless steel square tubes for using in ornamental, structural, exhaust, and other applications where appearance, mechanical properties or corrosion resistance is needed.


The application of these stainless steel square tubes is used in mechanical and structural purpose.


Outside diameter is applicable to the tubes with an outside diameter mainly in the range between 10x10mm to 101.6x101.6mm, wide size range meets all kinds of mechanical and structural processing needs such as handrails, door knob and furniture etc.


Products are made of Austenitic series stainless steel, grades in MT-304, MT-304L and MT-316L are the options, durable quality is without doubt.


Variable surface suits for different surroundings or performance, different norms can be complied to correspond different demand of the market.


As a leading stainless steel round tubes manufacturer worldwide.

  • Serious quality control leads YC INOX to be a reliable supplier.
  • Professional engineer and prompt after service to be your backup force.
  • Punctual delivery time make stock controlling well.
  • Tolerance is accordance with the norm, specific tolerance requirement is discussable.
  • Optional supplementary requirements are negotiated and provided.

ASTM A554, CNS 5802

Outside Diameter Thickness (mm)
0.8 0.9 1.0 1.2
1.5 1.6
4.0 4.57
in mm
- 10.0x10.0 Δ Δ Δ Δ Δ Δ            
1/2x1/2 12.7x12.7 Δ Δ Δ Δ Δ Δ            
- 15.0x15.0/18.0x18.0            
3/4x3/4 19.0x19.0          
- 20.0x20.0          
7/8x7/8 22.2x22.2          
1x1 25.4x25.4 / 25.0x25.0      
- 30.0x30.0      
1 1/4x1 1/4 31.8x31.8        
- 35.0x35.0        
1 1/2x1 1/2 38.1x38.1        
- 40.0x40.0          
2x2 50.8x50.8/50.0x50.0      
- 60.0x60.0          
2 1/2x2 1/2 63.5x63.5        
- 70.0x70.0        
3x3 76.2x76.2 / 75.0x75.0        
- 80.0x80.0        
- 90.0x90.0            
- 100.0x100.0            
4x4 101.6x101.6            

(1)Marking:Product Spec.

(2)Finish:(: Polish#180);(Δ:Polish#180/#320);(☐:Polish#180/#320/#400)

Standard Outside Diameter Thickness Length
CNS 5802
  O.D. < 31.8mm ± 0.38mm
  31.8mm < O.D. ≦ 63.5mm ± 0.51mm
  63.5mm < O.D. ≦ 139.7mm ± 0.76mm
139.7mm < O.D. ≦ 203.2mm ± 1.52mm


± 10%


Definite Cut Lengths

CNS 5802  NO.1/NO.2/NO.3  CNS 5802

+ 50mm

- 0mm

Stainless Steel Square Tubes

Stainless Steel Square Tubes

Stainless Steel Square Tubes