It is used for Construction,For machinery and equipment, solar equipment, steel structure, automobile parts, bridge ground piles, guardrails, ship internal structure.
G3466 GB/T3094-2000 (GB): Cold pressed shaped rectangular tubes
GB/T6728-2002 (GB) Cold-formed hollow section steel for structural use
ASTM A500 (American Standard): Cold-formed rectangular tubes and seamless rectangular tubes of carbon steel with round and shaped sections for structural use
EN 10219-1-2006 (European Standard): Cold-formed welded hollow structural sections of unalloyed and fine-grained steel
JIS G 3466 (Japanese Standard): Angular rectangular pipes for general structural use

Product:	Square/Rectangular Steel Pipes, RHS, SHS,CHC
Application:	In Industrial Construction,Machinery Manufacturing etc
Size:	OD: 10mm*10mm ~ 500mm*500mm
Wall Thickness:	0.5mm ~ 20mm
Length:	0.3M ~ 18M
Standard:	ASTM A500/GB/T6728-2002,GB/T6725-2002, GBT3094-2000 JG 178-2005,BS1387
Surface:	Bare, Black Painting,Galvanizing, Lightly Oiled
Packing:	Waterproof  plastic bag,bundle with strip

RHS – Rectangular Hollow Sections
RHS has inherently flat surfaces that make it more economical when it comes to joining and fabrication. Also, RHS is functional with clean lines and is used for construction and architectural applications.
RHS is manufactured in a wide range of dimensions and thicknesses, as well as combinations of both. Available thicknesses across the board are 1.6 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 5 mm, 6 mm, 8 mm, 9 mm, 10 mm, 12.5 mm, and 16 mm. Dimensions range from 50 mm x 20 mm to 400 mm to 300 mm.

SHS – Square Hollow Sections
SHS steel tubing has similar uses to RHS and is used for both industrial and construction applications. Square section RHS is available in the same thicknesses as RHS and dimensions range from 20 mm x 20 mm to 400 mm x 400 mm.

CHC – Circular Hollow Sections
CHC sections are commonly used for general engineering, in agricultural settings, and for reticulation.
CHC can be welded, bent, drilled, and screwed. Thickness ranges from 2 mm to 5.4 mm and the nominal diameter or bore ranges from 15 mm to 100 mm. The outside diameter ranges from 21.3 mm to 114.3 mm
The end finishes of CHC sections can be mill cut (or plain), screwed at one or both ends, screwed and socketed, or swaged.

Rectangular Hollow Section					Square Hollow Section
Size	Thickness	Size	Thickness		Size	Thickness
mm	mm	mm	mm		mm	mm
50 X 25	2	120 X 40	3		20 x 20	2
50 X 25	2.5	120 X 40	3.6		20 x 20	2.5
50 X 25	3	120 X 40	4		25 x 25	2
50 X 30	2.5	120 X 40	5		25 x 25	2.5
50 X 30	3	120 X 40	6		25 x 25	3
50 X 30	3.2	120 X 40	6.3		30 x 30	2.5
50 X 30	4	120 X 60	3		30 x 30	3
60 X 40	2.5	120 X 60	3.6		40 x 40	2
60 X 40	3	120 X 60	4		40 x 40	2.5
60 X 40	3.2	120 X 60	5		40 x 40	3
60 X 40	4	120 X 60	6		40 x 40	4
80 X 40	3	120 X 60	6.3		50 x 50	2
80 X 40	3.2	120 X 80	3		50 x 50	2.5
80 X 40	4	120 X 80	4		50 x 50	3
80 X 60	2.5	120 X 80	5		50 x 50	4
80 X 60	3	120 X 80	6		50 x 50	5
80 X 60	3.6	120 X 80	6.3		60 x 60	3
80 X 60	4	150 X100	3		60 x 60	4
80 X 60	5	150 X100	4		60 x 60	5
90 X 50	2.5	150 X100	5		70 x 70	3
90 X 50	3	150 X100	6		70 x 70	3.6
90 X 50	3.6	150 X100	6.3		70 x 70	5
90 X 50	4	160 X 80	3		80 x 80	3
90 X 50	5	160 X 80	4		80 x 80	3.6
100 X 40	3	160 X 80	5		80 x 80	5
100 X 40	3.6	160 X 80	6		80 x 80	6
100 X 40	4	160 X 80	6.3		90 x 90	3
100 X 40	5	200 X 100	4		90 x 90	3.6
100 X 50	3	200 X 100	5		90 x 90	5
100 X 50	3.6	200 X 100	6		90 x 90	6
100 X 50	4	200 X 100	6.3		100 x 100	4
100 X 50	5	200 X 100	8		100 x 100	5
100 X 50	6	200 X 100	10		100 x 100	6
100 X 50	6.3	200 X 100	12.5		100 x 100	8
100 X 60	3	200 X 100	16		100 x 100	10
100 X 60	3.6	250 X 150	6.3		120 x 120	5
100 X 60	4	250 X 150	8		120 x 120	6
100 X 60	5	250 X 150	10		120 x 120	8
100 X 60	6	250 X 150	12.5		120 x 120	10
100 X 60	6.3	250 X 150	16		150 x 150	5
100 X 80	3	300 X 200	6.3		150 x 150	6
100 X 80	3.6	300 X 200	8		150 x 150	8
100 X 80	4	300 X 200	10		150 x 150	10
100 X 80	5	300 X 200	12.5		180 x 180	6
100 X 80	6	300 X 200	16		180 x 180	8
100 X 80	6.3	400 X 200	10		180 x 180	10
		400 X 200	12.5		180 x 180	12.5
		400 X 200	16		200 x 200	6
		450 X 250	10		200 x 200	8
		450 X 250	12.5		200 x 200	10
		450 X 250	16		200 x 200	12.5
					250 x 250	8
					250 x 250	10
					250 x 250	12.5
					300 x 300	8
					300 x 300	10
					300 x 300	12.5