The specifications and dimensions of commonly used guardrails are as follows:
=According to your strength and appearance requirements=
Inform the strength requirements, provide samples, drawings, photos,
JCG Industrial Co., Ltd  designs and manufactures for you.​

Tube-round tube

Outer diameter		Thin tube	Thick tube
Inch	mm	Thickness mm	Thickness mm
1/2”	12.7	1.5	2.3
3/4”	19.05	1.5	2.6
1”	25.4	1.5	2.8
1.1/4”	31.75	1.5,1.8,2.0	3.2
1.1/2”	38.1	1.5,1.8,2.0	3.6
2”	50.8	1.5,1.8,2.0	3.6
3”	76.2	2.0	4.0
3.1/2”	88.9	2.3	4.0
4”	101.6	2.0,2.3	4.0
5”	127		3.0,4.0
6”	152.4		3.0,4.0
8”	203.2		4.0,4.5

Tube-square tube

Length x width mm	Thickness mm
19 × 19	1.5
25 × 25	1.5、2.0
30 × 30	1.5、2.0
38 × 38	1.5、2.0
50 × 50	1.5、2.0
60 × 60	1.5、2.0
75 × 75	2.0、2.3
100 x 100	2.0、2.3、3.0

Tube-flat tube

Length x width mm	Thickness mm
15× 30	1.5
20× 40	1.5、2.0
25× 50	1.5、2.0
30× 60	1.5、2.0
40× 80	1.5、2.0
50×100	2.0、2.3、3.0