Rectangular tube specification weight table

Rectangular tube is a hollow long strip of steel, also known as flat tube, flat square tube or square flat tube (as the name suggests). When the bending and torsional strength are the same, the weight is lighter, so it is widely used in the manufacture of mechanical parts and engineering structures.

Rectangular tube specification table

1. It can implement JISG3466-88 Japanese standard for general structural square and rectangular tubes.

2. It can implement the GB6728-2002 cold-formed hollow section steel standard for structures.

Product name	Specification
Rectangular tube	400*600*6.0-16	150*200*3.0-12	60*120*2.5-6.0
	300*500*6.0-16	100*300*4.0-12	60*100*2.5-6.0
	200*500*6.0-16	100*200*3.0-12	60*80*2.0-5.0
	200*400*6.0-16	100*150*3.0-12	50*90*3.0-4.0
	200*350*6.0-16	80*160*3.0-8.0	50*150*3.0-6.0
	200*300*6.0-14	80*140*3.0-8.0	50*120*3.0-6.0
	150*300*5.0-14	80*120*2.5-8.0	50*100*1.5-5.0
	150*250*5.0-14	80*100*2.0-8.0	50*80*2.0-5.0
	350*250*5.0-14	60*140*3.0-6.0	50*70*1.5-5.0

Rectangular tube weight calculation formula

The weight of a rectangular tube is calculated primarily based on its volume and the density of the material (0.0075). The formula is as follows:

Rectangular Tube Weight = Rectangular Tube Volume × Material Density

The volume of a rectangular tube can be calculated using its length, width, wall thickness, and length. The specific formula is:

Rectangular Tube Volume = [(Outer Diameter Length - Wall Thickness) × (Outer Diameter Width - Wall Thickness) - Inner Diameter Length × Inner Diameter Width] × Tube Length

Combining these two formulas yields the exact weight of the rectangular tube. It's important to note that different materials have different densities, so when calculating the weight, it's important to accurately understand the material and corresponding density of the rectangular tube.

Rectangular tube weight chart

size(mm)			Theoretical weight kg/m	size(mm)			Theoretical weight kg/m
b1 （long）	b2 （Width）	T （Thickness）		b1 （long）	b2 （Width）	T （Thickness）
50	25	1.20	1.37	100	50	3.00	6.78
		1.50	1.70			4.00	8.92
	30	2.50	2.94			5.00	10.99
		3.00	3.49	120	60	3.00	8.20
		4.00	4.52			4.00	10.80
60	30	2.50	3.34			5.00	13.35
		3.00	3.96			6.00	15.83
		4.00	5.15		80	3.00	9.14
	40	2.50	3.73			4.00	12.06
		3.00	4.43			5.00	14.92
		4.00	5.78			6.00	17.71
70	50	3.00	5.37	140	80	4.00	13.31
		4.00	7.03			5.00	16.48
		5.00	8.64			6.00	19.59
80	40	2.50	4.51	150	100	4.00	15.20
		3.00	5.37			5.00	18.84
		4.00	7.03			6.00	22.42
		5.00	8.64			8.00	29.39
	60	3.00	6.31	160	80	4.00	14.57
		4.00	8.29			5.00	18.05
		5.00	10.21			6.00	21.48
90	40	3.00	5.84			8.00	28.13
		4.00	7.66	180	100	4.00	17.08
		5.00	9.42			5.00	21.20
	50	3.00	6.31			6.00	25.25
		4.00	8.29			8.00	33.16
		5.00	10.21	200	100	4.00	18.34
	60	3.00	6.78			5.00	22.77
		4.00	8.92			6.00	27.13
		5.00	10.99			8.00	35.67

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