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Square and rectangular hollow structural section 

Application
Architectural: wall frames, partition frames, space frames, canopies, guard rails
Industrial: columns and purlins, material storage racks, mine roof support system, pallets, pipe racks, conveyors.
Infrastructural: airport terminal buildings, bridges, bus stands, signage supporting structures, railway platforms, foot overbridges.
General engineering: automobile chassis, greenhouse structures, truck and bus body members, hoarding structures, amusement park, exhibition stalls, scaffoldings, furnitures.

Production Standard
ASTM A500
EN10210
GB/T 6728-2002
JIS G3101
JIS G3466 

Specification

Square hollow section
Size (mm)	Thickness (mm)	Size (mm)	Thickness (mm)	Size (mm)	Thickness (mm)	Size (mm)	Thickness (mm)
15*15	0.6-2.0	16*16	0.6-2.0	18*18	0.6-2.0	20*20	0.6-2.0
25*25	0.6-3.0	30*30	0.8-3.0	34*34	1.0-3.5	38*38	1.0-3.5
40*40	1.0-3.5	48*48	1.2-3.5	50*50	1.2-4.0	60*60	1.2-4.0
70*70	1.2-4.0	75*75	1.2-4.0	80*80	1.2-5.0	90*90	1.2-5.0
100*100	1.2-6.0	110*110	1.2-6.0	120*120	2.0-6.0	125*125	2.0-6.0
130*130	2.0-6.0	140*140	3.0-6.0	150*150	3.75-8.0	160*160	3.75-8.0
175*175	4.0-8.0	180*180	4.0-8.0	200*200	4.0-12	250*250	4.0-12
280*280	4.0-12	300*300	4.0-12	350*350	4.0-12	400*400	4.0-12

Rectangular hollow section
Size (mm)	Thickness (mm)	Size (mm)	Thickness (mm)	Size (mm)	Thickness (mm)	Size (mm)	Thickness (mm)
10*20	0.6-2.0	14*20	0.6-2.0	15*25	0.6-2.0	20*30	0.6-2.0
20*40	0.6-3.0	20*50	0.6-3.0	25*40	0.8-3.0	25*50	0.8-3.0
30*40	0.8-3.5	30*50	0.8-3.5	30*60	0.8-3.5	30*70	0.8-4.0
40*60	0.8-4.0	40*70	1.0-4.0	40*80	1.0-4.0	40*90	1.0-4.0
40*100	1.2-4.0	40*120	1.2-5.0	50*70	1.2-4.0	50*80	1.2-4.0
50*90	1.2-4.0	50*100	1.2-4.0	50*120	1.2-5.0	50*150	1.2-6.0
60*80	1.2-5.0	60*90	1.2-5.0	60*100	1.2-5.0	60*120	1.2-5.0
60*180	2.0-6.0	60*200	2.0-6.0	70*140	2.0-6.0	70*190	2.0-6.0
80*100	2.0-6.0	80*120	2.0-6.0	80*160	2.0-6.0	80*180	3.0-6.0
80*200	3.0-6.0	85*175	3.0-6.0	90*190	3.0-6.0	100*120	2.0-6.0
100*125	2.0-6.0	100*140	2.0-6.0	100*150	2.0-6.0	100*160	2.0-6.0
100*180	3.0-6.0	100*200	3.75-8.0	110*140	4.0-6.0	120*130	4.0-6.0
120*140	4.0-6.0	120*200	4.0-8.0	125*135	4.0-8.0	150*200	4.0-12
150*250	4.0-12	150*300	4.0-12	150*350	4.0-12	200*300	4.0-12
200*400	4.0-12

Surface protection

1.Bare without painting

2.varnish painting, black painting

3.Hot dippe galvanized

4.Pre-galvanized

Packing

1.in bundles with steel strip

2.Plastic woven bag for each bundle