1, Quick Details
Standard:ASTM, DIN, GB, JIS
Grade:10#-45#, 16Mn, A53-A369, Q195-Q345, ST35-ST52
Thickness:1.0 - 35 mm
Section Shape:Square
Outer Diameter: 20*20-600*600mm
Application:Structure Pipe
Technique:ERW
Surface Treatment:oil,paint
Special Pipe:Thick Wall Pipe
Alloy Or Not:Non-alloy
Name:Mild Steel Black ERW Square Tubes
Shape: Square/Rectangular
2 , Size available :
|
size(mm)
|
thickness(mm)
|
size(mm)
|
thickness(mm)
|
size(mm)
|
thickness(mm)
|
|
16*16
|
1.5--2.0
|
30*20
|
1.5--3.0
|
120*100
|
2.0--10.0
|
|
20*20
|
1.5--2.0
|
38*25
|
1.5--3.0
|
130*90
|
2.0--10.0
|
|
25*25
|
1.5--3.0
|
40*20
|
1.5--3.0
|
140*70
|
2.0--10.0
|
|
30*30
|
1.5--3.0
|
40*30
|
1.5--3.0
|
140*80
|
2.0--10.0
|
|
35*35
|
1.5--3.0
|
50*25
|
1.5--3.0
|
150*50
|
3.0--10.0
|
|
40*40
|
1.5--4.0
|
50*30
|
1.5--3.0
|
160*80
|
3.0-10.0
|
|
45*45
|
1.5--4.0
|
50*40
|
2.0--4.0
|
150*100
|
3.0--10.0
|
|
50*50
|
1.5-6.0
|
60*30
|
2.0--4.0
|
180*80
|
3.0--10.0
|
|
65*65
|
2.0--6.0
|
60*40
|
2.0--5.0
|
180*100
|
3.0--10.0
|
|
70*70
|
2.0--6.0
|
60*50
|
2.0--6.0
|
200*100
|
3.0--12.0
|
|
75*75
|
2.0--6.0
|
70*50
|
2.0--6.0
|
200*120
|
3.0--12.0
|
|
80*80
|
2.0--8.0
|
75*50
|
2.5--6.0
|
200*150
|
3.0--12.0
|
|
90*90
|
2.0--6.0
|
80*40
|
2.0--5.0
|
250*100
|
3.0--12.0
|
|
100*100
|
2.0--10.0
|
80*50
|
2.0--6.0
|
300*100
|
4.0--12.0
|
|
120*120
|
2.0--10.0
|
80*60
|
2.0--5.0
|
300*150
|
4.0--12.0
|
|
125*125
|
2.0--10.0
|
90*40
|
2.0--5.0
|
250*150
|
4.0--12.0
|
|
135*135
|
2.0--10.0
|
90*50
|
2.0--6.0
|
300*200
|
5.0--14.0
|
|
140*140
|
3.5--10.0
|
90*60
|
2.0--6.0
|
400*300
|
6.0--16.0
|
|
150*150
|
3.0--12.0
|
100*40
|
2.0--5.0
|
450*250
|
6.0--14.0
|
|
160*160
|
3.0--12.0
|
100*50
|
2.0--6.0
|
500*300
|
6.0--16.0
|
|
180*180
|
3.0--12.0
|
100*60
|
2.0--6.0
|
|
|
|
200*200
|
3.0--12.0
|
100*80
|
2.0--8.0
|
|
|
|
250*250
|
4.0--16.0
|
120*40
|
2.0--5.0
|
|
|
|
300*300
|
4.0--16.0
|
120*50
|
2.0--6.0
|
|
|
|
350*350
|
4.0--16.0
|
120*60
|
2.0--8.0
|
|
|
|
400*400
|
4.0--16.0
|
120*80
|
2.0--10.0
|
|
|
3, Manufacture processing
1).Directly into Square: make continuous angle deformation of cold-rolled or hot-rolled steel plate directly, and then by high frequency welding form a rectangular steel tube forming method. Also known as square-square method.
2). Round to square: make continuous angle deformation of cold-rolled or hot-rolled steel plate directly, and then by high frequency welding form a round steel tube forming method, though the reshaping finally form a rectangular steel tube forming method. Also known as round to square method.
