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Stainless steel square tube

Stainless steel square tube is a kind of hollow long steel, because the cross section is square so called square tube. It is used in large quantities as a pipeline for transporting fluids, such as oil, gas, water, gas, steam, etc. In addition, it is lighter in weight when the bending and torsional strengths are the same, so it is also widely used in the manufacture of mechanical parts and engineering structures.

Stainless steel square tube classification: square tube is divided into two categories: seamless steel tubes and welded steel tubes (seamed tubes). According to the cross-sectional shape can be divided into square and rectangular tube.
For the stainless steel square tube subjected to fluid pressure are subjected to hydraulic pressure test to test its pressure resistance and quality, under the specified pressure does not occur leakage, wetting or swelling for qualified, some steel tubes also according to the standard or demand side requirements for rolled edge test, flaring test, flattening test, etc..
Square tube specification: 5*5~150*150 mm Thickness: 0.4~6.0 mm
Square tube material: 304, 304L, TP304, TP316L, 316, 316L, 316Ti, 321, 347H, 310S.

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Our Advantages

1.Stainless steel has different grades, corresponding to different hardness, thermo plasticity, plasticity and weld ability.

2.Stainless steel can be customized with different surfaces, and different surfaces have different applications.

3.We have years of experience in the industry and trust us to meet any need for your stainless steel. If you don't understand, you can tell us your requirements.

4.Pre-sales service: free samples. If customers have sample requirements, we can provide samples for free.
5.Sales service: special craftsmanship. We can provide other process services.

6.Likes: cut, bent, polished, painted, galvanized.

7.After Sales Service: We make sure our products are of good quality. We will deal with any quality problems immediately, and we will compensate customers for the loss caused by quality.

8.We have enough steel in stock to start cutting right away, which allows us to ship within 7-15 days (depending on availability).

Stainless steel square tube chemical composition

Chemical Material Composition of SS 310 Stainless Steel Square Tube
Grade C Mn Si P S Cr Mo Ni N
Stainless Steel 310 Tube minimum 24 19
maximum 0.25 2 1.5 0.045 0.03 26 22

Stainless steel square tube mechanical properties

SS 310S  square tube Mechanical Properties
Grade Tensile Strength (MPa) Minimum Yield Strength 0.2% Proof (MPa) Minimum Elongation (% in 50mm) Minimum Hardness
Rockwell B (HR B) Maximum Brinell (HB) Maximum
SS 310 square tube 515 205 40 95 217

Stainless steel square tube specifications

Product Name

Stainless Steel Square Pipe

Model Number

VM 1003


201/ 304 /304L/316L/409/430




1 Ton




Mirror Finish



Delivery Time

30 days for a container quantity

Payment Terms

T/T, LC, Cash, etc. Normally 30% by T/T in advance, balance to be paid before shipment.


Each tube will be packed in plastic bag, then several tubes will be packed by hollow plate or weaving bags.

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lndustries Served

Every industry has its unique set of material specifications and needs. That’s why you can count on the exceptional experience and industry knowledge of the professionals at Kuaima Steel - Meeting the Exact Needs of Every Industry That Uses steel.

  • Machinery manufac- turing industry
  • Power Generation
  • Oil & Gas
  • Manufacturing
  • Construction
  • Ship Building
  • Automobile manufacturing
  • Pipe Fabrication

Our main export country

We are a well known worldwide exporter of Stainless steel square tube , Ireland, Portugal, Gambia, Thailand, Ukraine, United Kingdom, Netherlands, South Africa, Spain, Turkey, Italy, Libya, Romania, Puerto Rico, Azerbaijan, United Arab Emirates, Pakistan, Philippines, Ghana, Slovakia, Germany, Saudi Arabia, Afghanistan, China, Bolivia, Switzerland, Bangladesh, Taiwan, Oman, Egypt, Greece, Norway, Singapore, Bulgaria, Estonia, Belgium, Yemen, Hong Kong, Ecuador, Sri Lanka, Nepal, Belarus, Finland, Gabon, Iran, Canada, Argentina, Lebanon.

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