Stainless steel square tube classification: square tube is divided into seamless steel tube and welded steel tube (seam pipe) two categories. According to section shape can be divided into square and rectangular tube, widely used is circular steel tube, but there are some semicircular, hexagonal, equilateral triangle, octagonal and other special-shaped steel tube.
For stainless steel square tube under fluid pressure to carry out hydraulic test to test its pressure capacity and quality, under the specified pressure does not leak, wet or expansion for qualified, some steel pipe according to the standard or the requirements of the side of the roll test, flaring test, flattening test.
Square tube specifications: 5*5~150*150 mm thickness :0.4~ 6.0mm
Square tube material: 304, 304L, TP304, TP316L, 316, 316L, 316Ti, 321, 347H, 310S
Manufacturer Food Grade 304 Stainless Steel Welded Square Tube Pipe
304 Stainless Steel Pipes Grade of the most flexible and commonly used stainless steels on the market. For stainless steel sections which are welded heavily, post-weld annealing may be necessary to provide maximum corrosive resistance.
Chemical Composition
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
|
304 |
min. |
- |
- |
- |
- |
- |
18.0 |
- |
8.0 |
- |
304L |
min. |
- |
- |
- |
- |
- |
18.0 |
- |
8.0 |
- |
304H |
min. |
0.04 |
- |
- |
- 0.045 |
- |
18.0 |
- |
8.0 |
- |
Mechanical Properties