hollow section

a pic shows Galvanized Square Hollow Sections

Hollow Section

The term “Hollow Section” (HSS: Hollow Structural Section) refers to welded steel tube that is utilized as structural elements in buildings and other structures, as well as a variety of manufactured items. It is commonly manufactured using hot-rolled coils. Slitting the coils to the appropriate width for the manufactured portion and then shaping them to the final shape required. Following size formation and seam welding, the tube is cut to the necessary length to make a single piece of pipe.

Hollow Section is a low-cost, lightweight material that is easy to weld, mold, punch, and drill. Its hollow design covers and protects wires, pipelines, and moving parts but allows them to be exposed. Additionally, it can be substituted for solid steel goods such as I-Beams and Wide Flange.

PRODUCT FEATURES

Types of Hollow Section

Hollow Section is available in a variety of shapes, including round, rectangular, and square.

The first type of pipe was circular steel sections (CHS). Frequently used in a variety of structural, mechanical, and construction applications.

CHS is a popular architectural choice for aesthetic appearances in a variety of applications.

Rectangular pipes (RHS) are a frequently used material in mechanical, structural, and construction applications. This is because the flat surface of the pipe results in a more economical structural solution for joining and various other types of fabrication work.

Square pipe (SHS) is another popular type of structural steel pipe that falls somewhere between RHS and CHS in terms of characteristics, appearance, and structural behavior.

SHS has a flat surface that makes joining and welding easier.

Dimensions and Sizes of HOLLOW SECTION

- Specification & Size of Circular Hollow Section (CHS)

DN	O. D.		W. T.
DN	Inch	mm	SCH5S	SCH10S	SCH10	SCH20	SCH30	SCH40	SCH60	SCH80	SCH100	SCH120	SCH140	SCH160	STD	XS	XXS
50	2″	60.3	1.65	2.77	–	–	–	3.91	–	5.54	–	–	–	8.74	3.91	5.54	11.07
65	2 1/2″	73	2.11	3.05	–	–	–	5.16	–	7.01	–	–	–	9.53	5.16	7.01	14.02
80	3″	88.9	2.11	3.05	–	–	–	5.49	–	7.62	–	–	–	11.13	5.49	7.52	15.24
90	3 1/2″	101.6	2.11	3.05	–	–	–	5.74	–	8.08	–	–	–	–	5.74	8.08	–
100	4″	114.3	2.11	3.05	–	–	–	6.02	–	8.58	–	11.13	–	13.49	6.02	8.56	17.12
125	5″	141.3	2.77	3.4	–	–	–	6.55	–	9.53	–	12.7	–	15.88	6.55	9.53	18.05
150	6″	168.3	2.77	3.4	–	–	–	7.11	–	10.97	–	14.27	–	18.26	7.11	10.97	21.95
200	8″	219.1	2.77	3.76	–	6.35	7.04	8.18	10.31	12.7	15.09	18.26	20.62	23.01	8.18	12.7	22.23
250	10″	273.1	3.4	4.19	–	6.35	7.8	9.27	12.7	15.09	18.26	21.44	25.4	28.58	9.27	12.7	25.4
300	12″	323.9	3.96	4.57	–	6.35	8.38	10.31	14.27	17.48	21.44	25.4	28.58	33.32	9.53	12.7	25.4
350	14″	355.5	3.96	4.78	6.35	7.92	9.53	11.13	15.09	19.05	23.83	27.79	31.75	35.71	9.53	12.7	–
400	16″	406.4	4.19	4.78	6.35	7.92	9.53	12.7	16.66	21.44	26.19	30.96	36.53	40.49	9.53	12.7	–
450	18″	457.2	4.19	4.78	6.35	7.92	11.13	14.27	19.05	23.83	39.36	34.93	39.67	45.24	–	–	–
500	20″	508	4.78	5.54	6.35	9.53	12.7	15.09	20.62	26.19	32.54	38.1	44.45	50.01	–	–	–
550	22″	558.8	4.78	5.54	6.35	9.53	12.7	–	22.23	28.58	34.93	41.28	47.63	53.98	–	–	–
600	24″	609.6	5.54	6.35	6.35	9.53	14.27	17.48	24.61	30.96	38.89	46.02	52.37	59.54	–	–	–

- Specification & Size of Rectangular Hollow Section (RHS)

Sizes	Weight	Height	Width	W. T.
Sizes	[kg/m]	[mm]	[mm]	[mm]
50 x 25 x 2.5 RHS	2.7	50	25	2.5
50 x 25 x 2.5 RHS	2.7	50	25	2.5
50 x 25 x 3 RHS	3.2	50	25	3
50 x 30 x 2.5 RHS	2.9	50	30	2.5
50 x 30 x 3 RHS	3.4	50	30	3
50 x 30 x 3.2 RHS	3.6	50	30	3.2
50 x 30 x 3.6 RHS	4	50	30	3.6
50 x 30 x 4 RHS	4.4	50	30	4
50 x 30 x 5 RHS	5.3	50	30	5
60 x 40 x 2.5 RHS	3.7	60	40	2.5
60 x 40 x 3 RHS	4.4	60	40	3
60 x 40 x 3.2 RHS	4.6	60	40	3.2
60 x 40 x 3.6 RHS	5.1	60	40	3.6
60 x 40 x 4 RHS	5.6	60	40	4
60 x 40 x 5 RHS	6.9	60	40	5
60 x 40 x 6 RHS	8	60	40	6
60 x 40 x 6.3 RHS	8.3	60	40	6.3
80 x 40 x 3 RHS	5.3	80	40	3
80 x 40 x 3.2 RHS	5.6	80	40	3.2
80 x 40 x 3.6 RHS	6.3	80	40	3.6
80 x 40 x 4 RHS	6.9	80	40	4
80 x 40 x 5 RHS	8.4	80	40	5
80 x 40 x 6 RHS	9.9	80	40	6
80 x 40 x 6.3 RHS	10.3	80	40	6.3
80 x 40 x 8 RHS	12.5	80	40	8
90 x 50 x 3 RHS	6.2	90	50	3
90 x 50 x 3.2 RHS	6.6	90	50	3.2
90 x 50 x 3.6 RHS	7.4	90	50	3.6
90 x 50 x 4 RHS	8.2	90	50	4
90 x 50 x 5 RHS	10	90	50	5
90 x 50 x 6 RHS	11.8	90	50	6
90 x 50 x 6.3 RHS	12.3	90	50	6.3
90 x 50 x 8 RHS	15	90	50	8
100 x 50 x 3 RHS	6.7	100	50	3
100 x 50 x 3.2 RHS	7.1	100	50	3.2
100 x 50 x 3.6 RHS	8	100	50	3.6
100 x 50 x 4 RHS	8.8	100	50	4
100 x 50 x 5 RHS	10.8	100	50	5
100 x 50 x 6 RHS	12.7	100	50	6
100 x 50 x 6.3 RHS	13.3	100	50	6.3
100 x 50 x 8 RHS	16.3	100	50	8
100 x 60 x 3 RHS	7.2	100	60	3
100 x 60 x 3.2 RHS	7.6	100	60	3.2
100 x 60 x 3.6 RHS	8.5	100	60	3.6
100 x 60 x 4 RHS	9.4	100	60	4
100 x 60 x 5 RHS	11.6	100	60	5
100 x 60 x 6 RHS	13.6	100	60	6
100 x 60 x 6.3 RHS	14.2	100	60	6.3
100 x 60 x 8 RHS	17.5	100	60	8
120 x 60 x 3.6 RHS	9.7	120	60	3.6
120 x 60 x 4 RHS	10.7	120	60	4
120 x 60 x 5 RHS	13.1	120	60	5
120 x 60 x 6 RHS	15.5	120	60	6
120 x 60 x 6.3 RHS	16.2	120	60	6.3
120 x 60 x 8 RHS	20.1	120	60	8
120 x 60 x 10 RHS	24.6	120	60	10
120 x 80 x 3.6 RHS	10.8	120	80	3.6
120 x 80 x 4 RHS	11.9	120	80	4
120 x 80 x 5 RHS	14.7	120	80	5
120 x 80 x 6 RHS	17.4	120	80	6
120 x 80 x 6.3 RHS	18.2	120	80	6.3
120 x 80 x 8 RHS	22.6	120	80	8
120 x 80 x 10 RHS	27.4	120	80	10
140 x 80 x 4 RHS	13.2	140	80	4
140 x 80 x 5 RHS	16.3	140	80	5
140 x 80 x 6 RHS	19.3	140	80	6
140 x 80 x 6.3 RHS	20.2	140	80	6.3
140 x 80 x 8 RHS	25.1	140	80	8
140 x 80 x 10 RHS	30.6	140	80	10
150 x 100 x 4 RHS	15.1	150	100	4
150 x 100 x 5 RHS	18.6	150	100	5
150 x 100 x 6 RHS	22.1	150	100	6
150 x 100 x 6.3 RHS	23.1	150	100	6.3
150 x 100 x 8 RHS	28.9	150	100	8
150 x 100 x 10 RHS	35.3	150	100	10
150 x 100 x 12 RHS	41.4	150	100	12
150 x 100 x 12.5 RHS	42.8	150	100	12.5
160 x 80 x 4 RHS	14.4	160	80	4
160 x 80 x 5 RHS	17.8	160	80	5
160 x 80 x 6 RHS	21.2	160	80	6
160 x 80 x 6.3 RHS	22.2	160	80	6.3
160 x 80 x 8 RHS	27.6	160	80	8
160 x 80 x 10 RHS	33.7	160	80	10
160 x 80 x 12 RHS	39.5	160	80	12
160 x 80 x 12.5 RHS	40.9	\|160	80	12.5
180 x 100 x 4 RHS	16.9	180	100	4
180 x 100 x 5 RHS	21	180	100	5
180 x 100 x 6 RHS	24.9	180	100	6
180 x 100 x 6.3 RHS	26.1	180	100	6.3
180 x 100 x 8 RHS	32.6	180	100	8
180 x 100 x 10 RHS	40	180	100	10
180 x 100 x 12 RHS	47	180	100	12
180 x 100 x 12.5 RHS	48.7	180	100	12.5
200 x 100 x 4 RHS	18.1	200	100	4
200 x 100 x 5 RHS	22.6	200	100	5
200 x 100 x 6 RHS	26.8	200	100	6
200 x 100 x 6.3 RHS	28.1	200	100	6.3
200 x 100 x 8 RHS	35.1	200	100	8
200 x 100 x 10 RHS	43.1	200	100	10
200 x 100 x 12 RHS	50.8	200	100	12
200 x 100 x 12.5 RHS	52.7	200	100	12.5
200 x 100 x 16 RHS	65.2	200	100	16
200 x 120 x 6 RHS	28.7	200	120	6
200 x 120 x 6.3 RHS	29.9	200	120	6.3
200 x 120 x 8 RHS	37.3	200	120	8
200 x 120 x 10 RHS	45.9	200	120	10
200 x 120 x 12 RHS	54.5	200	120	12
200 x 120 x 12.5 RHS	55.7	200	120	12.5
250 x 150 x 5 RHS	30.4	250	150	5
250 x 150 x 6 RHS	36.2	250	150	6
250 x 150 x 6.3 RHS	38	\|250	150	6.3
250 x 150 x 8 RHS	47.7	250	150	8
250 x 150 x 10 RHS	58.8	250	150	10
250 x 150 x 12 RHS	69.6	250	150	12
250 x 150 x 12.5 RHS	72.3	250	150	12.5
250 x 150 x 16 RHS	90.3	250	150	16
260 x 180 x 6 RHS	40	260	180	6
260 x 180 x 6.3 RHS	41.9	260	180	6.3
260 x 180 x 8 RHS	52.7	260	180	8
260 x 180 x 10 RHS	65.1	260	180	10
260 x 180 x 12 RHS	77.2	260	180	12
260 x 180 x 12.5 RHS	80.1	260	180	12.5
260 x 180 x 16 RHS	100	260	180	16
300 x 200 x 5 RHS	38.3	300	200	5
300 x 200 x 6 RHS	45.7	300	200	6
300 x 200 x 6.3 RHS	47.9	300	200	6.3
300 x 200 x 8 RHS	60.3	300	200	8
300 x 200 x 10 RHS	74.5	300	200	10
300 x 200 x 12 RHS	88.5	300	200	12
300 x 200 x 12.5 RHS	91.9	300	200	12.5
300 x 200 x 16 RHS	115	300	200	16
350 x 250 x 6 RHS	55.1	350	250	6
350 x 250 x 6.3 RHS	57.8	350	250	6.3
350 x 250 x 8 RHS	72.8	350	250	8
350 x 250 x 10 RHS	90.2	350	250	10
350 x 250 x 12 RHS	107	\|350	250	12
350 x 250 x 12.5 RHS	112	350	250	12.5
350 x 250 x 16 RHS	141	350	250	16
400 x 200 x 6 RHS	55.1	400	200	6
400 x 200 x 6.3 RHS	57.8	400	200	6.3
400 x 200 x 8 RHS	72.8	400	200	8
400 x 200 x 10 RHS	90.2	400	200	10
400 x 200 x 12 RHS	107	400	200	12
400 x 200 x 12.5 RHS	112	400	200	12.5
400 x 200 x 16 RHS	141	400	200	16
450 x 250 x 8 RHS	85.4	450	250	8
450 x 250 x 10 RHS	106	450	250	10
450 x 250 x 12 RHS	126	450	250	12
450 x 250 x 12.5 RHS	131	450	250	12.5
450 x 250 x 16 RHS	166	450	250	16
500 x 300 x 8 RHS	97.9	500	300	8
500 x 300 x 10 RHS	122	500	300	10
500 x 300 x 12 RHS	145	500	300	12
500 x 300 x 12.5 RHS	151	500	300	12.5
500 x 300 x 16 RHS	191	500	300	16
500 x 300 x 20 RHS	235	500	300	20

- Specification & Size of Square Hollow Section (SHS)

Sizes	Weight	Height	Width	W. T.
Sizes	[kg/m]	[mm]	[mm]	[mm]
20 x 20 x 2 SHS	1.1	20	20	2
20 x 20 x 2.5 SHS	1.3	20	20	2.5
25 x 25 x 2 SHS	14	25	25	2
25 x 25 x 2.5 SHS	1.7	25	25	2.5
25 x 25 x 3 SHS	2	25	25	3
30 x 30 x 2 SHS	1.7	30	30	2
30 x 30 x 2.5 SHS	2.1	30	30	2.5
30 x 30 x 3 SHS	2.5	30	30	3
40 x 40 x 2.5 SHS	2.9	40	40	2.5
40 x 40 x 3 SHS	3.4	40	40	3
40 x 40 x 3.2 SHS	3.6	40	40	3.2
40 x 40 x 3.6 SHS	4	40	40	3.6
40 x 40 x 4 SHS	4.4	40	40	4
40 x 40 x 5 SHS	5.3	40	40	5
50 x 50 x 2.5 SHS	3.7	50	50	2.5
50 x 50 x 3 SHS	4.4	50	50	3
50 x 50 x 3.2 SHS	4.6	50	50	3.2
50 x 50 x 3.6 SHS	5.1	50	50	3.6
50 x 50 x 4 SHS	5.6	50	50	4
50 x 50 x 5 SHS	6.9	50	50	5
50 x 50 x 6 SHS	8	50	50	6
50 x 50 x 6.3 SHS	8.3	50	50	6.3
60 x 60 x 2.5 SHS	4.5	60	60	2.5
60 x 60 x 3 SHS	5.3	60	60	3
60 x 60 x 3.2 SHS	5.6	60	60	3.2
60 x 60 x 3.6 SHS	6.3	60	60	3.6
60 x 60 x 4 SHS	6.9	60	60	4
60 x 60 x 5 SHS	8.4	60	60	5
60 x 60 x 6 SHS	9.9	60	60	6
60 x 60 x 6.3 SHS	10.3	60	60	6.3
60 x 60 x 8 SHS	12.5	60	60	8
70 x 70 x 3 SHS	6.2	70	70	3
70 x 70 x 3.2 SHS	6.6	70	70	3.2
70 x 70 x 3.6 SHS	7.4	70	70	3.6
70 x 70 x 4 SHS	8.2	70	70	4
70 x 70 x 5 SHS	10	70	70	5
70 x 70 x 6 SHS	11.8	70	70	6
70 x 70 x 6.3 SHS	12.3	70	70	6.3
70 x 70 x 8 SHS	15	70	70	8
80 x 80 x 3 SHS	7.2	80	80	3
80 x 80 x 3.2 SHS	7.6	80	80	3.2
80 x 80 x 3.6 SHS	8.5	80	80	3.6
80 x 80 x 4 SHS	9.4	80	80	4
80 x 80 x 5 SHS	11.6	80	80	5
80 x 80 x 6 SHS	13.6	80	80	6
80 x 80 x 6.3 SHS	14.2	80	80	6.3
80 x 80 x 8 SHS	17.8	80	80	8
90 x 90 x 5 SHS	13.1	90	90	5
90 x 90 x 6 SHS	15.5	90	90	6
90 x 90 x 6.3 SHS	16.2	90	90	6.3
90 x 90 x 8 SHS	20.1	90	90	8
100 x 100 x 3.6 SHS	10.8	100	100	3.6
100 x 100 x 4 SHS	11.9	100	100	4
100 x 100 x 5 SHS	14.7	100	100	5
100 x 100 x 6 SHS	17.4	100	100	6
100 x 100 x 6.3 SHS	18.2	100	100	6.3
100 x 100 x 8 SHS	22.6	100	100	8
100 x 100 x 10 SHS	27.4	100	100	10
120 x 120 x 4 SHS	14.4	120	120	4
120 x 120 x 5 SHS	18	120	120	5
120 x 120 x 6 SHS	21.2	120	120	6
120 x 120 x 6.3 SHS	22.2	120	120	6.3
120 x 120 x 8 SHS	27.6	120	120	8
120 x 120 x 10 SHS	33.7	120	120	10
120 x 120 x 12 SHS	39.5	120	120	12
120 x 120 x 12.5 SHS	40.9	120	120	12.5
140 x 140 x 5 SHS	21	140	140	5
140 x 140 x 6 SHS	24.9	140	140	6
140 x 140 x 6.3 SHS	26.1	140	140	6.3
140 x 140 x 8 SHS	32.6	140	140	8
140 x 140 x 10 SHS	40	140	140	10
140 x 140 x 12 SHS	47	140	140	12
140 x 140 x 12.5 SHS	48.7	140	140	12.5
150 x 150 x 5 SHS	22.6	150	150	5
150 x 150 x 6 SHS	26.8	150	150	6
150 x 150 x 6.3 SHS	28.1	150	150	6.3
150 x 150 x 8 SHS	35.1	150	150	8
150 x 150 x 10 SHS	43.1	150	150	10
150 x 150 x 12 SHS	50.8	150	150	12
150 x 150 x 12.5 SHS	52.7	150	150	12.5
150 x 150 x 16 SHS	65.2	150	150	16
160 x 160 x 5 SHS	24.1	160	160	5
160 x 160 x 6 SHS	28.7	160	160	6
160 x 160 x 6.3 SHS	30.1	160	160	6.3
160 x 160 x 8 SHS	37.6	160	160	8
160 x 160 x 10 SHS	46.3	160	160	10
160 x 160 x 12 SHS	54.6	160	160	12
160 x 160 x 12.5 SHS	56.6	160	160	12.5
160 x 160 x 16 SHS	70.2	160	160	16
180 x 180 x 5 SHS	27.3	180	180	5
180 x 180 x 6 SHS	32.5	180	180	6
180 x 180 x 6.3 SHS	34	180	180	6.3
180 x 180 x 8 SHS	42.7	180	180	8
180 x 180 x 10 SHS	52.5	180	180	10
180 x 180 x 12 SHS	62.1	180	180	12
180 x 180 x 12.5 SHS	64.4	180	180	12.5
180 x 180 x 16 SHS	80.2	180	180	16
200 x 200 x 5 SHS	30.4	200	200	5
200 x 200 x 6 SHS	36.2	200	200	6
200 x 200 x 6.3 SHS	38	200	200	6.3
200 x 200 x 8 SHS	47.7	200	200	8
200 x 200 x 10 SHS	58.8	200	200	10
200 x 200 x 12 SHS	69.6	200	200	12
200 x 200 x 12.5 SHS	72.3	200	200	12.5
200 x 200 x 16 SHS	90.3	200	200	16
220 x 220 x 6 SHS	40	220	220	6
220 x 220 x 6.3 SHS	41.9	220	220	6.3
220 x 220 x 8 SHS	52.7	220	220	8
220 x 220 x 10 SHS	65.1	220	220	10
220 x 220 x 12 SHS	77.2	220	220	12
220 x 220 x 12.5 SHS	80.1	220	220	12.5
220 x 220 x 16 SHS	100	220	220	16
250 x 250 x 5 SHS	38.3	250	250	5
250 x 250 x 6 SHS	45.7	250	250	6
250 x 250 x 6.3 SHS	47.9	250	250	6.3
250 x 250 x 8 SHS	60.3	250	250	8
250 x 250 x 10 SHS	74.5	250	250	10
250 x 250 x 12 SHS	88.5	250	250	12
250 x 250 x 12.5 SHS	91.9	250	250	12.5
250 x 250 x 16 SHS	115	250	250	16
260 x 260 x 6 SHS	47.6	260	260	6
260 x 260 x 6.3 SHS	49.9	260	260	6.3
260 x 260 x 8 SHS	62.8	260	260	8
260 x 260 x 10 SHS	77.7	260	260	10
260 x 260 x 12 SHS	92.2	260	260	12
260 x 260 x 12.5 SHS	95.8	260	260	12.5
260 x 260 x 16 SHS	120	260	260	16
300 x 300 x 6 SHS	55.1	300	300	6
300 x 300 x 6.3 SHS	57.8	300	300	6.3
300 x 300 x 8 SHS	72.8	300	300	8
300 x 300 x 10 SHS	90.2	300	300	10
300 x 300 x 12 SHS	107	300	300	12
300 x 300 x 12.5 SHS	112	300	300	12.5
300 x 300 x 16 SHS	141	300	300	16
350 x 350 x 8 SHS	85.4	350	350	8
350 x 350 x 10 SHS	106	350	350	10
350 x 350 x 12 SHS	126	350	350	12
350 x 350 x 12.5 SHS	131	350	350	12.5
350 x 350 x 16 SHS	166	350	350	16
400 x 400 x 8 SHS	97.9	400	400	8
400 x 400 x 10 SHS	122	400	400	10
400 x 400 x 12 SHS	145	400	400	12
400 x 400 x 12.5 SHS	151	400	400	12.5
400 x 400 x 16 SHS	191	400	400	16
400 x 400 x 20 SHS	235	400	400	20

Advantages of Using Hollow Section

The advantages of using hollow sections (Hollow Structural Sections) include the ability to reinforce and beautify steel structures. From cost savings to increased flexibility, Hollow Section offers several advantages over W-beams in construction and structural applications:

- Cost Saving

Cost control is critical in any construction project. By utilizing Hollow Section (Hollow Structural Sections), significant weight savings are realized, which translates into significant material cost savings. Simply put, less steel is required to accomplish the same task. When it is used, less steel is required to support a given load, resulting in material cost savings. Finally, when unpainted weathering steel is specified in conjunction with the Hollow Section, you receive a double dose of cost savings during construction as well as additional life cycle cost savings due to the extremely low ongoing maintenance costs compared to a painted structure. Additionally, when less weight is involved, transportation, handling, and erection costs are reduced.

- Availability

Hollow Section is readily available in weathering (ASTM A847) and non-weathering (ASTM A500 and 1085) forms from a variety of steel distributors and may be easier to source for your project than W-Beams.

- Simplicity

Due to the plethora of available sizes for W-beams, selecting the correct size for your application can become complicated. There are only 40-60 square and rectangular tube sizes available in Hollow Section. Additionally, the straight sides of square and rectangular tubing or hollow sections simplify fabrication.

- Attractiveness and Versatility

Architects, engineers, and contractors benefit from the increased aesthetic appeal and flexibility provided by weathering steel HSS. Weathering steel is a highly durable and adaptable material. Additionally, the patina that weathered steel develops over time complements to stone, wood, plants, and other outdoor elements.