Angle steel, commonly known as angle iron, is a long strip of steel with two sides perpendicular to each other in an angle shape.

Applications

Angle steel can be composed of different kinds of force members according to the different needs of the structure, and can also be used as the connection between the members. It is widely used in various building structures and engineering structures, such as beams, bridges, power transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, cable trench supports, power piping, busbar bracket installation, and warehouse shelves, etc.
Angle steel is a carbon structural steel for construction, is a simple section of section steel, mainly used for metal components and plant framework, etc.. In use requires good weldability, plastic deformation properties and a certain mechanical strength. The raw material billet for the production of angle steel is low carbon square steel billet, and the finished angle steel is delivered in hot rolled formed, normalized or hot rolled condition.

Specification standard

GB/T2101-2008 (general provisions for acceptance, packaging, marking and quality certification of steel sections).
GB/T706-2008 (replaces GB/T9787-88 GB/T9788-88) (size, shape, weight and permissible deviation of hot-rolled equilateral/unequal angles).
JISG3192-94 (Shapes, dimensions, weights and their allowable deviations of hot-rolled sections).
DIN 17100-80 (quality standards for ordinary structural steel).
ГОСТ535-88 (technical conditions for ordinary carbon sections).
According to the above-mentioned standards, the angles shall be delivered in bundles, the bundles shall be tied, and the length of the bundles shall be in accordance with the regulations. Angles are generally delivered in bare packages and need to be protected from moisture for transportation and storage.

Theoretical Weight

Theoretical weight table of equilateral angle

Specification (side length*thickness)mm	Weight(kg/m)	Specification(side length*thickness)mm	Weight(kg/m)
20*3	0.89	80*5	6.21
20*4	1.15	80*6	7.38
25*3	1.12	80*7	8.53
25*4	1.46	80*8	9.66
30*3	1.37	80*10	11.87
30*4	1.79	90*6	8.35
36*3	1.66	90*7	9.66
36*4	2.16	90*8	10.95
36*5	2.65	90*10	13.48
40*3	1.85	90*12	15.94
40*4	2.42	100*6	9.37
40*5	2.98	100*7	10.83
45*3	2.09	100*8	12.28
45*4	2.74	100*10	15.12
45*5	3.37	100*12	17.9
45*6	3.99	100*14	20.61
50*3	2.33	100*16	23.26
50*4	3.06	110*7	11.93
50*5	3.77	110*8	13.53
50*6	4.46	110*10	16.69
56*3	2.62	110*12	19.78
56*4	3.45	110*14	22.81
56*5	4.25	125*8	15.5
56*8	6.57	125*10	19.13
63*4	3.91	125*12	22.7
63*5	4.82	125*14	26.19
63*6	5.72	140*10	21.49
63*8	7.47	140*12	25.52
63*10	9.15	140*14	29.49
70*4	4.37	140*16	33.39
70*5	5.4	160*10	24.73
70*6	6.41	160*12	29.39
70*7	7.4	160*14	33.99
70*8	8.37	160*16	38.52
75*5	5.82	180*12	33.16
75*6	6.91	180*14	38.38
75*7	7.98	180*16	43.54
75*8	9.03	180*18	48.63
75*10	11.09	200*14	42.89
		200*16	48.68
		200*18	54.4
		200*20	60.06
		200*24	71.17

Theoretical weight table of unequal angle steel

Specification(L*W*Th) mm	Weight(kg/m)	Specification(L*W*Th) mm	Weight(kg/m)
25*16*3	0.91	100*63*6	7.55
25*16*4	1.18	100*63*7	8.72
32*20*3	1.17	100*63*8	9.88
32*20*4	1.52	100*63*10	12.1
40*25*3	1.48	100*80*6	8.35
40*25*4	1.94	100*80*7	9.66
45*28*4	1.69	100*80*8	10.9
45*28*5	2.2	100*80*10	13.5
50*32*3	1.91	110*70*6	8.35
50*32*4	2.49	110*70*7	9.66
56*36*3	2.15	110*70*8	10.9
56*36*4	2.82	110*70*10	13.5
56*36*5	3.47	125*80*7	11.1
63*40*4	3.19	125*80*8	12.6
63*40*5	3.92	125*80*10	15.5
63*40*6	4.64	125*80*12	18.3
63*40*7	10	140*90*8	14.2
70*45*4	3.57	140*90*10	17.5
70*45*5	4.4	140*90*12	20.7
70*45*6	5.22	140*90*14	23.9
70*45*7	6.01	160*100*10	19.9
75*50*5	4.81	160*100*12	23.6
75*50*6	5.7	160*100*14	27.2
75*50*8	7.43	160*100*16	30.8
75*50*10	9.1	180*110*10	22.3
80*50*5	5	180*110*12	26.5
80*50*6	5.93	180*110*14	30.6
80*50*7	6.85	180*110*16	34.6
80*50*8	7.75	200*125*12	29.8
90*56*5	5.66	200*125*14	34.4
90*56*6	6.72	200*125*16	39
90*56*7	7.76	200*125*18	43.6
90*56*8	8.78