Tianjin Tianyingtai Steel Pipe Co., Ltd. is one of the most credible manufacturers and suppliers of gi hollow section for greenhouse in China. Welcome to consult the quotation and import cheap gi hollow section for greenhouse made in China here from our factory.
Product Information
The gi hollow section is pre galvanized steel pipe.The common zinc coating is 30g/㎡ -40g/㎡.It can be divided
into round pipe,square tube and rectangular tube.
The common size of gi hollow section as below:
Hollow Section | ||||
Mateial | Size | Thickness | Size | Thickness |
Q195 | 12*12 | 0.6-1.0 | 25*12 | 0.6-1.0 |
16*16 | 0.6-1.2 | 38*19 | 0.6-1.5 | |
19*19 | 0.6-2.0 | 50*25 | 0.6-1.5 | |
20*20 | 0.6-2.0 | 50*30 | 0.6-3.0 | |
25*25 | 0.6-2.75 | 60*40 | 0.7-3.5 | |
30*30 | 0.6-2.75 | 76*38 | 0.8-2.3 | |
32*32 | 0.6-3.0 | 75*50 | 1.0-4.0 | |
38*38 | 0.6-3.0 | 80*40 | 0.8-4.0 | |
40*40 | 0.6-5.75 | 100*50 | 1.0-6.0 | |
50*50 | 0.6-5.0 | 100*60 | 1.5-6.0 | |
60*60 | 1.0-6.0 | 100*75 | 1.5-6.0 | |
63.5*63.5 | 1.0-6.0 | 120*60 | 2.0-6.0 | |
70*70 | 1.0-6.0 | 120*80 | 3.0-6.0 | |
75*75 | 1.0-6.0 | 125*50 | 3.0-6.0 | |
80*80 | 1.0-6.0 | 125*75 | 3.0-6.0 | |
90*90 | 2.0-6.0 | 150*50 | 3.0-6.0 | |
100*100 | 2.0-6.0 | 150*75 | 3.0-6.0 | |
120*120 | 2.5-6.0 | 150*100 | 4.0-12 | |
125*125 | 3.0-6.0 | 160*80 | 4.0-6.0 | |
150*150 | 2.5-8.0 | 175*100 | 4.0-12 | |
200*200 | 2.75-12 | 200*100 | 4.0-12 | |
250*250 | 4.5-12 | 200*150 | 4.0-12 | |
300*300 | 4.5-12 | 250*150 | 5.0-12 | |
350*350 | 4.75-18 | 300*200 | 5.0-12 | |
400*400 | 4.5-12 | 400*200 | 5.0-12 | |
Size:Size:+/-3% | ||||
Application
Gi hollow section is used for general purpose structural, machinery parts, frames, fixtures, automotive and agricultural implements and equipment, brackets, stakes, ornamental works, forgings, base plates, and miscellaneous / non-critical applications that involve mild cold bending, mild hot forming, punching, machining, and welding.
Product Process
Some customer would like to do some processing in pipe,and we have process factory to carry out various processing,such as threading,painted,bending,punching ,cutting and so on.


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