Stainless Steel Square Tubes/Pipes Manufacturers&Suppliers



What is stainless steel square tube? What is stainless steel square pipe?


A stainless steel square tube/pipe is a hollow strip of steel, called a square tube because of its square cross-section. It is used in large quantities as a pipeline for conveying fluids, such as petroleum, natural 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: the 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 the 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:

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.


Stainless steel seamless square tube production process

Round steel preparation → heating → hot rolling piercing → cutting head → pickling → trimming → lubrication → cold rolling processing → degreasing → solution heat treatment → straightening → pipe cutting → pickling → finished product inspection.


Stainless steel welded square tube production process.

Raw material - slitting - welding pipe making - end trimming - polishing - inspection (printing) - packaging - shipping (into the warehouse) (decorative welded pipe)
Raw material - slitting - welding pipe - heat treatment - straightening - straightening - end trimming - pickling - hydraulic test - inspection (printing) - packaging - shipping (warehousing) (welded pipe industrial piping with pipe).



The stainless steel square tube price $500-10000/ton

The stainless steel square pipe price $500-10000/ton