Common square tube size:
as Seamless square tube The size and specification of common square tube with an outer diameter of 50mm,
(1) Generally, it is calibrated in millimeters (mm) of the outer diameter D, inner diameter and wall thickness S of the square tube.
(2) Each type of square tube has regular different sizes, and the outer diameter has 29 types of 32-195mm. Another example is the welded square tube with a nominal diameter of 25mm and a wall thickness of 3.25mm for ordinary square tubes and 4mm for thickened square tubes.
Normal length of square pipe
(1) Generally, it is calibrated in millimeters (mm) of the outer diameter D, inner diameter and wall thickness S of the square tube.
(2) Each type of square tube has regular markets of different sizes, with 15 types of wall thickness ranging from 2.5 mm to 10 mm; In other words, for the same wall thickness of 5mm, there are 15 types of wall thickness of 2.5-10mm; Or, for the same wall thickness of 5mm, for example, there are 29 commonly used square tube sizes with an outer diameter of 50mm, ranging from 32-195mm. Another example is the welded square tube with a nominal diameter of 25mm and a wall thickness of 3.25mm for ordinary square tubes and 4mm for thickened square tubes.
