Specs and Weight of Hot Dip Galvanized Square Tube

Date:2025-03-28Tags:Galvanized Square Tubes, hollow square, Galvanized Pipe

Definition of hot-dip galvanized square tube

Hot-dip galvanized square tube is a square tube made by welding after curling steel plate or steel strip, and then placed in a hot-dip galvanizing pool on the basis of this square tube through a series of chemical reactions.

The production process of hot-dip galvanized square tube is relatively simple, and the production efficiency is very high. There are many varieties and specifications. This kind of square tube requires very little equipment and funds, which is suitable for the production of small galvanized square tube manufacturers.

Hot-dip galvanized square tube material performance index

The factors affecting the quality of hot-dip galvanized square tube raw materials mainly include unstable mechanical properties of square tubes, surface defects of square tubes and large geometric size deviations. If the yield point and tensile strength of square tubes are too high, it will cause difficulties in forming square tubes, especially when the tube wall is thick, the material has a large resilience, and the square tube has a large deformation stress during welding, and the weld is prone to cracks. When the tensile strength of the square tube exceeds 635 MPa and the elongation is less than 10%, the weld of the square tube is prone to cracking during welding. When the tensile strength is lower than 300MPa, the surface of the square tube is prone to wrinkles during the forming process due to the soft material.

Hot-dip galvanized square tube material brand identification

Hot-dip galvanized square tube material brand: 20# steel, 45# steel, 16Mn, Q345B, Q345C, Q345D, Q345E, st37-2, ss400, st52-3, J55, SM490A, SM520A, ASTM A106 GR.B and other ordinary carbon steel, high-quality steel, alloy steel materials, etc.

The production process of hot-dip galvanized square tube is as follows:


Hot-dip galvanized square tube is a square tube made of steel plate or steel strip after curling and welding, and is formed in a hot-dip galvanizing pool through a series of chemical reactions; it can also be a hollow square section steel tube made by hot-rolled or cold-rolled galvanized steel strip after cold bending and then high-frequency welding. The production process of the pipe is simple, the production efficiency is high, there are many varieties and specifications, and the equipment investment is low, but the general str, ength is lower than that of the seamless pipe.

Material selection - material inspection - material storage - extrusion molding - annealing - straightening - heat treatment - mechanical property inspection - chemical analysis - tensile test - inspection - cutting to size - honing - end processing - finished product storage - finished product re-inspection - finished product delivery

square tube

Specifications and weight of hot dip galvanized square tube


Some product parameters （GB/T3094-2000）
Side Length/mm
Wall thickness/mm
Cross-sectional area/cm2
Theoretical weight/kg/M
Moment of inertia/cm4
Section modulus/cm3
40
3.5
4.9
3.85
11.16
5.58
4
5.49
4.56
14.37
6.84
5
6.98
5.48
16.56
7.87
6
7.55
5.93
15.34
7.67
50
4
7.09
5.56
25.56
10.22
5
8.58
6.73
29.81
11.93
6
9.95
7.81
33.35
13.34
7
11.21
8.8
36.23
14.49
8
12.35
9.7
38.51
15.41
60
5
10.58
8.3
54.57
18.19
6
13.35
9.69
61.82
20.61
7
14.01
11
68.03
22.68
8
15.55
12.21
73.28
24.43
70
5
12.58
9.87
90.26
25.79
6
14.7
11.58
103.1
29.47
7
16.81
13.19
114.5
32.72
8
18.75
14.72
124.5
35.57
80
5
14.58
11.44
138.9
34.72
6
17.15
13.46
159.7
39.93
7
19.61
15.39
178.5
44.63
8
21.95
17.23
195.4
48.85
92
5
16.98
13.33
217.1
47.19
6
20.03
15.72
251.1
54.59
7
22.97
18.03
282.3
61.38
8
25.79
20.25
310.9
67.58
100
5
18.58
14.58
282.8
56.57
6
21.95
17.23
328.2
65.54
7
25.21
19.79
370.2
74.04
8
28.35
22.36
408.9
81.78
108
5
19.96
15.67
346.99
72.14
6
23.55
18.49
400.07
85.13
7
27.02
21.21
448.15
97.61
8
30.35
23.82
491.42
109.56
10
36.62
28.75
564.27
131.84
12
42.37
33.26
620.05
151.91
12.5
43.73
34.33
631.48
156.57
14
47.59
37.36
660.12
169.71
16.5
53.38
41.9
690.13
188.75
18
56.46
44.32
698.5
198.48
110
7
28.01
21.99
503.4
91.54
8
31.55
24.77
557.9
101.4
9
34.98
27.46
608.4
110.6
10
37.42
29.37
600.9
137.26
12
43.33
34.01
661.57
158.3
14
48.71
38.24
705.79
177.05
16
53.57
42.05
734.96
193.47
18
57.9
45.45
750.37
207.58
120
5
22.36
17.55
485.47
89.79
6
26.43
20.75
562.16
106.17
7
30.38
23.85
632.54
121.99
8
34.19
26.84
696.82
137.23
10
41.42
32.15
807.91
165.94
12
48.13
37.78
987.05
192.03
14
54.31
42.63
9665.79
216.23
16
59.97
47.08
1015.66
237.3
150
6
33.63
26.4
1145.91
168.85
7
38.78
30.44
1299.44
194.7
8
43.79
34.38
1443
219.85
10
53.42
41.93
1701.21
268.02
12
62.53
49.09
1922.61
313.26
14
71.11
55.82
2109.19
355.49
16
79.17
62.15
2262.95
394.63
180
16
98.37
77.22
4252.42
590.55
18
108.3
85.02
4541.3
648.77
200
8
59.79
46.94
3621
400.25
10
73.42
58.63
4337.63
491.53
12
86.53
67.93
4983.59
579.08
14
99.11
77.8
5562.26
662.78
16
111.17
87.27
6076.38
742.55
18
122.7
96.32
6528.64
818.29
250
10
93.42
73.33
8841.87
781.73
12
110.53
86.77
10254.22
924.94
14
127.11
99.78
11556.24
1063.51
16
143.17
112.39
12751.41
1197.31
18
158.7
124.58
13843.17
1326.27
280
10
105.42
82.75
12648.95
987.86
12
124.93
98.07
14726.82
1170.88
14
143.91
112.97
16663.46
1348.77
16
162.37
127.46
18462.79
1521.42
18
180.3
141.54
20128.71
1688.73

Choose BAOWI Steel for Premium Galvanized Square Tubes

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