Stainless steel square pipe classification: square pipe is divided into two categories: seamless steel pipe and welded steel pipe (seamed pipe). According to the cross-sectional shape, it can be divided into square and rectangular pipes, and the round steel pipe is widely used, but there are also some semi-circular, hexagonal, equilateral triangle, octagonal and other special-shaped steel pipes.
For stainless steel square pipes that withstand fluid pressure, hydraulic tests should be carried out to test their pressure resistance and quality, and no leakage, wetting or expansion under the specified pressure is qualified, and some steel pipes should also be crimped test, flaring test, flattening test, etc. according to the standard or demand-side requirements.
Square tube size: 5*5~150*150 mm thickness: 0.4~6.0 mm
Square tube material: 304, 304L, TP304, TP316L, 316, 316L, 316Ti, 321, 347H, 310S [1].
