Mild Steel Rectangular Tube

What is mild steel rectangular tube

The rectangular steel pipe is a tough and durable steel pipe. It can be widely be used in various project applications. The close tolerance, dense structure, and good finishing abilities allow rectangular steel tubing to be used under various situations. The shape of the rectangular steel tube allows for increased strength and rigidity over other shapes to reprocessing. The rectangular steel tube can withstand extreme temperatures, pressures, and an array of changing climate disparities while being used in both industrial and domestic settings.

Size of mild steel rectangular tube

Size by Inch (diameter)	Thickness	Sizes by MM (diameter)	Thickness
inch	inch	mm	mm
1“ x 1/2"	0.065"	10mm×15mm	0.6mm～1.5mm
1“ x 3/4"	0.065"	10mm×20mm	0.6mm～1.5mm
1“ x 3/4"	0.095"	14mm×21mm	0.6mm～1.5mm
1 1/4" x 3/4"	0.065"	15mm×30mm	0.6mm～1.5mm
1 1/2" x 3/4"	0.065"	15mm×38mm	0.6mm～1.5mm
1 1/2" x 3/4"	0.120"	20mm×20mm	0.6mm～2mm
1 1/2" x 1"	0.065"	20mm×30mm	0.6mm～2mm
	0.072"	20mm×40mm	0.6mm～2mm
	0.083"	20mm×50mm	0.6mm～2mm
	0.120"	22mm×35mm	0.6mm～2mm
2“ x 1”	0.065"	25mm×40mm	0.9mm～2mm
	0.083"	25mm×65mm	0.9mm～3.75mm
	0.120"	30mm×20mm	1mm～2mm
	0.188"	30mm×40mm	1mm～3.75mm
2” x 1 1/4“	0.065"	30mm×45mm	1mm～3.75mm
2” x 1 1/4“	0.083"	30mm×50mm	1mm～3.75mm
2“ x 1 1/2”	0.083"	30mm×60mm	1mm～4mm
2“ x 1 1/2”	0.120"	40mm×25mm	1mm～4.5mm
2 1/2“ x 1 1/2”	0.072"	40mm×50mm	1mm～4.5mm
	0.083"	40mm×60mm	1mm～4.5mm
	0.120"	40mm×80mm	1mm～5mm
	0.148"	40mm×100mm	1mm～5mm
	0.188"	50mm×25mm	2mm～5mm
	0.250"	50mm×30mm	2mm～5mm
3" x 1"	0.083"	50mm×60mm	2mm～5mm
	0.120"	50mm×80mm	2mm～5mm
	0.188"	50mm×100mm	2mm～5mm
3“ x 1 1/2”	0.083"	60mm×30mm	2mm～6mm
	0.120"	60mm×40mm	2mm～6mm
	0.188"	60mm×80mm	2mm～6mm
	0.250"	70mm×50mm	2mm～6mm
3“ x 2”	0.065	80mm×30mm	2mm～8mm
	0.083	80mm×40mm	2mm～8mm
	0.125	80mm×60mm	2mm～8mm
	0.188	80mm×100mm	2mm～8mm
	0.25	100mm×50mm	2mm～8mm
3“ x 2”	0.083"	120mm×60mm	2.5mm～10mm
	0.120"	120mm×80mm	2.5mm～10mm
	0.188"	140mm×60mm	2.5mm～10mm
	0.250"	140mm×80mm	2.5mm～10mm
	0.312"	150mm×100mm	2.5mm～12mm
4“ x 1 1/2”	0.120"	160mm×80mm	2.5mm～12mm
4“ x 1 1/2”	0.188"	180mm×150mm	2.5mm～12mm
4“ x 2”	0.083"	200mm×100mm	4mm～12mm
	0.120"	200mm×150mm	4mm～12mm
	0.188"	220mm×140mm	4mm～12mm
	0.250"	250mm×150mm	6mm～12mm
	0.312"	250mm×100mm	6mm～12mm
	0.375"	250mm×200mm	6mm～30mm
4“ x 2 1/2”	0.188"	300mm×100mm	6mm～30mm
4“ x 2 1/2”	0.250"	300mm×150mm	6mm～30mm
4" x 3"	0.083"	300mm×200mm	6mm～30mm
	0.120"	300mm×250mm	6mm～30mm
	0.188"	400mm×250mm	8mm～30mm
	0.250"	400mm×300mm	8mm～30mm
	0.312"	450mm×200mm	8mm～30mm
	0.375"	450mm×250mm	8mm～30mm
4 1/2“ x 2 1/2”	0.188"	400mm×300mm	8mm～30mm
4 1/2“ x 2 1/2”	0.250"	400mm×350mm	8mm～30mm
5" x 2”	0.120"	500mm×200mm	10mm～30mm
	0.188"	500mm×250mm	10mm～30mm
	0.250"	500mm×300mm	10mm～30mm
	0.312"	500mm×350mm	10mm～30mm
	0.375"	500mm×400mm	10mm～30mm
5" x 2 1/2”	0.120"	500mm×450mm	10mm～30mm
	0.188"	600mm×200mm	10mm～28mm
	0.250"	600mm×400mm	10mm～28mm
5" x 3"	0.188"	600mm×500mm	10mm～28mm
	0.250"	800mm×400mm	10mm～28mm
	0.312"	800mm×600mm	10mm～28mm
	0.375"	800mm×700mm	10mm～28mm
	0.500"	1000mm×400mm	10mm～28mm
5" x 4"	0.188"	1000mm×500mm	10mm～28mm
	0.250"	1000mm×600mm	10mm～28mm
	0.312"	1000mm×800mm	10mm～28mm
	0.375"
6" x 2"	0.120"
	0.188"
	0.250"
	0.312"
	0.375"
6“ x 3"	0.120"
	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
6“ x 4"	0.120"
	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
7“ x 3"	0.188"
	0.250"
	0.312"
	0.375"
7“ x 4”	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
7“ x 5”	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
8“ x 2”	0.188"
	0.250"
	0.312"
	0.375"
8“ x 3”	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
8“ x 4”	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
8" x 6”	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
9“ x 3”	0.188"
	0.250"
	0.312"
	0.375"
9“ x 7”	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
10“ x 2”	0.188"
	0.250"
	0.312"
	0.375"
10" x 3”	0.188"
	0.250"
	0.312"
	0.375"
10" x 4"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
10" x 5"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
10" x 6"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
10" x 8"	0.188"
	0.250"
	0.375"
	0.500"
	0.625"
12" x 2"	0.188"
	0.250"
	0.312"
	0.375"
12" x 3"	0.188"
	0.250"
	0.312"
	0.375"
12" x 4"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
12" x 6"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
12" x 8"	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
12" x 10"	0.250"
14" x 4"	0.250"
	0.312"
	0.375"
	0.500"
14" x 6"	0.250"
	0.312"
	0.375"
	0.500"
14" x 10"	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
16"x 4"	0.312"
	0.375"
	0.500"
16" x 8"	0.250"
	0.312"
	0.375"
	0.500"
16" x 12"	0.312"
	0.375"
	0.500"
	0.625"
18" x 6"	0.312"
	0.375"
	0.500"
20" x 4"	0.312"
	0.375"
	0.500"
20" x 8"	0.312"
	0.375"
	0.500"
20" x 12"	0.312"
	0.375"
	0.500"
	0.625"

Manufacturing process of mild steel rectangular tube

Uncoiling --- Flattening --- Shearing and butt welding --- Circle shearing --- Loop storing--- Roll forming --- High-frequency welding --- Removal of burrs --- Water cooling --- Forming --- Non-destructive inspection --- Cutting off --- Corrosion-resistant coating --- Inspection --- Marking ---Packing and warehousing

Standard of mild steel rectangular tube

EN 10210:S235JRH,S355J2H,S355NH

EN 10219:S235-S550

ASTM A500:Gr.b

ASTM A501:Gr.b

Chemical composition of material
Grade	element	C	Mn	P	S
ASTM A500 Gr.b	%	0.05%-0.23%	0.3%-0.6%	0.04%	0.04%

Acc.to EN10027/1	Acc.to EN10027/2	C% max (Norminal W.T.(mm)		Si% max	Mn% max	P% max	S% max	N% max
and IC 10		≤ 40		Si% max	Mn% max	P% max	S% max	N% max
S235JRH	1.0039	0.17	0.2	-	1.4	0.045	0.045	0.009
S275JOH	1.0149	0.2	0.22	-	1.5	0.04	0.04	0.009
S275J2H	1.0138	0.2	0.22	-	1.5	0.035	0.035	-
S355JOH	1.0547	0.22	0.22	0.55	1.6	0.04	0.04	0.009
S355J2H	1.0576	0.22	0.22	0.55	1.6	0.035	0.035	-

Mechanical properties of material
Grade	Yield Strength	Tensile Strength	Elongation
A500.Gr.b	46 ksi	58 ksi	23%
A513.GR.B	72 ksi	87 ksi	10%

Norm		Yield Strength			Tensile Strength		Min.elogation				Min.percent properties
Acc.to EN10027/1 and IC 10	Acc.to EN10027/2	Norminal W.T.mm			Norminal W.T.mm		Longit.		Cross		Test temperature°C	Average min.impact value
		≤16	>6	>40	<3	≤3≤65	Norminal W.T.mm
			≤65	≤65			≤40	>40	>40	≤65
			≤65	≤65			≤40	≤65	≤40	≤65
S253JRH	1.0039	235	225	215	360-510	340-470	26	25	24	23	20	27
S275JOH	1.0149	275	265	255	410-580	410-560	22	21	20	19	0	27
S275J2H	1.0138	275	265	255	430-560	410-560	22	21	20	19	-20	27
S355JOH	1.0547	355	345	335	510-680	490-630	22	21	20	19	0	27
S355J2H	1.0576	355	345	335	510-680	490-630	22	21	20	19	-20	27

Application of mild steel rectangular tube

Building construction/architecture
Automobiles and related equipment (trailers, etc.)
Industrial equipment
Solar panel frames
Home appliances
Aircraft/aerospace
Restaurant furniture
Signage
Truck beds
Agricultural equipment

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