Square Tube (SHS)

Standard:

EN 10210: S235JRH,S355J2H,S355NH,S355J0H
EN 10219: S235JRH,S355J2H,S355NH,S355J0H
ASTM A500: Gr.A,Gr.B,Gr.C

Types:

Stainless square tube

Galvanized square tube

MS square tube erw & seamless

ERW Square Tube

Seamless Square Tube

Square tube (SHS): Square tube is a hollow square cross-section lightweight thin-walled steel tube, that is, a steel tube with equal side lengths. Its structure is simple and stable, and it has high load-bearing capacity. The specifications of square tubes are usually expressed in terms of side length and wall thickness.

Square tubes are divided into seamless and welded seams. Seamless square tubes are made by perforating and extruding seamless round tubes. ‌Welded square tubes are rolled from strip steel through process treatment. Generally, the strip steel is unpacked, flattened, curled, and welded to form a round tube. The round tube is then rolled into a square tube and then cut to the required length.

Classification of square tubes:
Square tubes are divided according to the production process: hot-rolled seamless square tubes, cold-drawn seamless square tubes, extruded seamless square tubes, and welded square tubes (ERW square tube).

Among them, welded square tubes are divided into:
(a) According to the process - arc welding square tube, resistance welding square tube (high frequency, low frequency), gas welding square tube, furnace welding square tube
(b) According to welding seam - straight seam welded square tube, spiral welded square tube

Square tubes are divided according to surface treatment: hot-dip galvanized square tube, electro-galvanized square tube, oil-coated square tube, pickled square tube
Square tubes are classified by use: square tubes for decoration, square tubes for machine tools, square tubes for machinery industry, square tubes for chemical industry, square tubes for steel structures, square tubes for shipbuilding, square tubes for automobiles, square tubes for steel beams and columns , special purpose square tube.

Features of square tube:
High strength: Square tubes have high tensile, compressive and bending strengths, can withstand large loads and pressures, and are suitable for the production of various structural parts.
Good stability: The square tube has high dimensional accuracy, stable structure, and is not easy to deform, which can ensure that the processed products have high precision and stability.
Good corrosion resistance: After surface treatment such as galvanizing and plastic spraying, square pipes have good corrosion resistance and can adapt to various complex environments.
Low cost: The production cost of square tube is relatively low and easy to process, making it suitable for large-scale production and application.

Square Pipe & Tube Size Chart:

Size by Inch (diameter)	Thickness	Sizes by MM (diameter)	Thickness
inch	inch	mm	mm
1/2" x 1/2"	0.065"	16mm×16mm	0.4mm～1.5mm
3/4" x 3/4"	0.049"	18mm×18mm	0.4mm～1.5mm
	0.065"	20mm×20mm	0.4mm～3mm
	0.083"	22mm×22mm	0.4mm～3mm
	0.120"	25mm×25mm	0.6mm～3mm
1" x 1"	0.049"	30mm×30mm	0.6mm～4mm
	0.058"	32mm×32mm	0.6mm～4mm
	0.065"	34mm×34mm	1mm～2mm
	0.072"	35mm×35mm	1mm～4mm
	0.083"	38mm×38mm	1mm～4mm
	0.095"	40mm×40mm	1mm～4.5mm
	0.109"	44mm×44mm	1mm～4.5mm
	0.120"	45mm×45mm	1mm～5mm
1 1/8" x 1 1/8"	0.035"	50mm×50mm	1mm～5mm
	0.049"	52mm×52mm	1mm～5mm
	0.065"	60mm×60mm	1mm～5mm
	0.109"	70mm×70mm	2mm～6mm
	0.120"	75mm×75mm	2mm～6mm
1 1/4" x 1 1/4"	0.049"	76mm×76mm	2mm～6mm
	0.065"	80mm×80mm	2mm～8mm
	0.072"	85mm×85mm	2mm～8mm
	0.083"	90mm×90mm	2mm～8mm
	0.109"	95mm×95mm	2mm～8mm
	0.120"	100mm×100mm	2mm～8mm
	0.135"	120mm×120mm	4mm～8mm
	0.156"	125mm×125mm	4mm～8mm
	0.188"	130mm×130mm	4mm～8mm
1 1/2" x 1 1/2"	0.049"	140mm×140mm	6mm～10mm
	0.065"	150mm×150mm	6mm～10mm
	0.072"	160mm×160mm	6mm～10mm
	0.083"	180mm×180mm	6mm～12mm
	0.109"	200mm×200mm	6mm～30mm
	0.120"	220mm×220mm	6mm～30mm
	0.140"	250mm×250mm	6mm～30mm
	0.188"	270mm×270mm	6mm～30mm
	0.250"	280mm×280mm	6mm～30mm
1 3/4" x 1 3/4"	0.065"	300mm×300mm	8mm～30mm
	0.083"	320mm×320mm	8mm～30mm
	0.095"	350mm×350mm	8mm～30mm
	0.109"	380mm×380mm	8mm～30mm
	0.120"	400mm×400mm	8mm～30mm
	0.188"	420mm×420mm	10mm～30mm
2" x 2"	0.049"	450mm×450mm	10mm～30mm
	0.065"	480mm×480mm	10mm～30mm
	0.083"	500mm×500mm	10mm～30mm
	0.109"	550mm×550mm	10mm～40mm
	0.120"	600mm×600mm	10mm～40mm
	0.145"	700mm×700mm	10mm～40mm
	0.165"	800mm×800mm	10mm～50mm
	0.188"	900mm×900mm	10mm～50mm
	0.250"	1000mm×1000mm	10mm～50mm
	0.312"
2 1/4" x 2 1/4"	0.188"
	0.250"
2 1/2" x 2 1/2"	0.083"
	0.109"
	0.120"
	0.188"
	0.250"
	0.312"