China Welded Square Steel Pipe

We are specialized in supplying weld steel pipes including welded square steel pipe, rectangular steel pipe.
1. Standard: GB/T6728 ASTM A500
2. Material: Q195, Q235, Q345=16Mn etc.
3. Side: 15*15*0.5mm-500*500*15mm
4. Length: 6-12m
5. Application: Conveying low pressure fluid, machinery manufacturing, structural projects, auto fabrication, agricultural chemistry and solar power stent, etc.
6. Others: Square Hollow Section, Steel Pipe, steel pipe and tube, structual steel pipe, welded pipe, ASTM pipe, steel carbon tube, industrial pipe etc.
Contact Person: Jeffson Z
Mobile: 0086-13475829481

Side
mmSide Tolerance
mmWall Thicknessmm1.21.51.752.0 2.53.0 4.0 5.0 6.0 8.0 10121416Calculated Weight ( Kg/m )20*20± 0.500.679 0.826 0.941 1.050

25*25± 0.500.867 1.061 1.215 1.363

30*30± 0.50
1.296 1.490 1.677 2.032 2.361
40*40± 0.50
1.767 2.039 2.305 2.817 3.303 4.198

50*50± 0.50
2.238 2.589 2.933 3.602 4.245 5.454

60*60± 0.60

3.550 4.387 5.187 6.710 8.129

70*70± 0.65
5.170 6.129 7.966 9.699

80*80± 0.70
5.957 7.071 9.222 11.269

90*90± 0.75
8.013 10.478 12.839 15.097
100*100± 0.80

11.734 14.409 16.981
110*110± 0.90

12.99 15.98 18.866
120*120± 0.90

14.246 17.549 20.749 26.840
130*130± 1.00

15.502 19.120 22.634 28.921
140*140± 1.10

16.758 20.689 24.517 31.864
150*150± 1.20

18.014 22.260 26.402 33.945
160*160± 1.20

19.270 23.829 28.285 36.888
170*170± 1.30

20.526 25.400 30.170 38.969
180*180± 1.40

21.800 27.000 32.100 41.500
190*190± 1.50

23.00 28.50 33.90 44.00
200*200± 1.60

24.30 30.10 35.80 46.50
220*220± 1.80

33.2 39.6 51.5 63.2 73.5

250*250± 2.00

38.0 45.2 59.1 72.7 84.8
280*280± 2.20

42.7 50.9 66.6 82.1 96.1
300*300± 2.40
54.7 71.6 88.4 104
350*350± 2.80
64.1 84.2 104 123
400*400± 3.20

96.7 120 141 163
450*450± 3.60

109 135 160 185
500*500± 4.00

122 151 179 207 235