Square Tube

Square tube is an extruded product that is widely used for all types of fabrication projects where lightweight and corrosion resistance is a primary concern. Square tube has square corners inside and outside, with no weld seam.Square tube is a steel tube with the same side length. It is not very heavy and has high compressive and torsional strength. It is widely used in machinery manufacturing and other fields. The specification marking method of square tube is mainly expressed by side width side width tube wall thickness.

Types of Square Tube

1.By Material
Carbon Steel Square Tube
Galvanized Square Tube
Stainless Steel Square Tube
Aluminum Square Tube
MS Square Tube (ERW & Seamless)

2.By Manufacturing Process
Hot-Rolled Square Tube
Cold-Rolled Square Tube
ERW Square Tube

Seamless Square Tube

3.By Application
Structural Square Tube
Mechanical Square Tube
Furniture Square Tube
Automotive Square Tube

Standards and specifications for square tubes

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

ASTM A312 TP304,304L,316,316L

Item	Details
Application	Hydraulic Pipe, Structure Pipe
Special Pipe	Thick Wall Pipe
Thickness	0.8 – 16 mm
Length	12M, 6m, 6.4M
Certificate	API, CE, BSI, ROHS, SNI, BIS, SASO, PVOC, SONCAP, SABS, SIRM, TISI, KS, JIS, GS, ISO9001
Processing Service	Welding, Punching, Cutting, Bending, Decoiling
Technique	Hot Rolled
Outer Diameter	1010-600600
Standard	API, ASTM, BS, DIN, GB, JIS
Surface	Galvanized, Black, Painting
Material	Q195 / Q235 / Q345
Length (other)	5.8m, 6m, 12m
Shape	Square
Grade	45#, 10Cr9Mo1VNb, 15NiCuMoNb5, A315, Q345, ST35, St52
Keyword	ASTM A106 GR.B Galvanized Seamless Pipe, Square Tube & Pipe, SHS, Carbon Steel Square Tube, Square Structural Steel Tubing

Square Tube Size

Sizes:20 mm x 20 mm - 400 mm x 400 mm
Width: 2 mm - 20 mm

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"
2 1/4" x 2 1/4"	0.250"
2 1/2" x 2 1/2"	0.083"
	0.109"
	0.120"
	0.188"
	0.250"
	0.312"

3" x 3"	0.083"
	0.120"
	0.188"
	0.250"
	0.312"
	0.375"
3 1/2" x 3 1/2"	0.120"
	0.188"
	0.250"
	0.312"
	0.375"
4" x 4"	0.083"
	0.120"
	0.156"
	0.188"
	0.250"
	0.312"
	0.375"
	0.500"

4 1/2" x 4 1/2"	0.188"
	0.250"
	0.312"
	0.375"
5" x 5"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
6" x 6"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
7" x 7"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"

8" x 8"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
9" x 9"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
10" x 10"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
12" x 12"	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
14" x 14"	0.312"
	0.375"
	0.500"
	0.625"
16" x 16"	0.312"
	0.375"
	0.500"
	0.625"

What are the characteristics and uses of square tubes?

1. Square tube product description

Square tube is a hollow square cross-section light thin-walled steel tube, also known as steel cold-bent profile. It is a square cross-section steel made of Q235 hot-rolled or cold-rolled strip or coil as the base material, cold-bent and then welded by high-frequency welding. In addition to the thickening of the wall thickness, the corner size and edge straightness of the hot-rolled extra-thick-walled square tube reach or even exceed the level of the resistance-welded cold-formed square tube. It has good comprehensive mechanical properties, good weldability, cold and hot processing performance and corrosion resistance, and good low-temperature toughness.

2. Square tube use

Square structural tubes are corrosion-resistant, moisture-proof, and resistant to extreme temperatures. This ensures structural robustness in many industrial applications. The uses of square tubes include projects such as construction, machinery manufacturing, steel construction, shipbuilding, solar power generation brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, boiler construction, and highway railings. There are also house buildings, pressure vessels, oil storage tanks, bridges, power station equipment, lifting and transportation machinery and other high-load welded structural parts. Recyclability is very important to maintain the sustainability of stainless steel materials, and square structural tubes are highly recyclable. This reduces the impact on the environment.

square tubes