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Cold formed square tubes are the mostly chosen hollow section for
construciton application, such as bridges, shipbuilding, steel
roof, steel poles, railways, airport etc.
Specification Range
Normal Size
Dia(mm) | T(mm) | Dia (mm) | T(mm) | Dia (mm) | T(mm) |
30*30 | 2-4 | 120*120 | 2-14 | 250*250 | 8-25 |
40*40 | 2-4 | 125*125 | 2-14 | 255*255 | 8-25 |
50*50 | 2-5 | 130*130 | 2-14 | 258*258 | 8-25 |
60*60 | 2-5 | 135*135 | 8-14 | 260*260 | 8-25 |
70*70 | 2-5 | 140*140 | 8-20 | 280*280 | 8-25 |
75*75 | 2-5 | 150*150 | 8-22 | 300*300 | 9-25 |
80*80 | 2-8 | 160*160 | 8-22 | 350*350 | 9-25 |
90*90 | 2-9 | 180*180 | 8-22 | 360*360 | 9-25 |
100*100 | 2-14 | 200*200 | 8-25 | 400*400 | 9-25 |
110*110 | 2-14 | 220*220 | 8-25 | ||
115*115 | 2-14 | 240*240 | 8-25 |
Dia(mm) | T(mm) | Dia(mm) | T(mm) | Dia(mm) | T(mm) |
60*20 | 2-3 | 80*40 | 2-6 | 110*60 | 5-8 |
60*30 | 2-3 | 90*40 | 2-6 | 110*70 | 5-10 |
60*40 | 2-6 | 90*50 | 2-6 | 120*60 | 5-8 |
70*20 | 2-3 | 100*20 | 2-4 | 120*80 | 5-10 |
70*30 | 2-3 | 100*30 | 2-4 | 120*100 | 5-14 |
70*40 | 2-6 | 100*40 | 2-4 | 125*90 | 5-10 |
70*50 | 2-6 | 100*50 | 2-6 | 125*100 | 5-14 |
75*45 | 2-6 | 100*80 | 4-9 | 130*120 | 5-14 |
140*80 | 5-6,8-10 |
Big Size
Dia (mm) | T(mm) | Dia (mm) | T(mm) | Dia (mm) | T(mm) |
180*100 | 5-14 | 300*200 | 7-25 | 400*250 | 7-20 |
200*100 | 6-18 | 300*250 | 7-25 | 400*300 | 7-25 |
200*150 | 5-6,8-25 | 320*200 | 7-25 | 420*350 | 7-25 |
250*100 | 5-14 | 350*100 | 7-18 | 450*150 | 7-18 |
250*200 | 6-25 | 350*200 | 7-25 | 450*250 | 7-22 |
250*225 | 6-25 | 350*250 | 7-25 | 500*300 | 7-25 |
300*100 | 7-18 | 350*300 | 7-25 | 600*200 | 7-18 |
300*150 | 7-18 | 400*200 | 7-18 | 600*400 | 8-25 |