material: steel 16Mn we have many types tube such as triangular tube and square tube

     Series Lemon

NO.1
outer size(mm)	Inner size(mm)
1 39*30*3	30.8*23.7*3.5
4 48*41.25*3	40.1*34.5*4
657.6*48.2*3.5	49.2*39.6*4.5

NO.2

3 Lemon  Series

Series outer size(mm)    Inner size(mm)

1 32.4*2.5                        26.6*3.5

2 36.1*3.4                        29*4

4 43.4*3.3                         36.1*4.4

5 51.3*3                            44.6*4

6 53.6*3.8                         44.6*4

7 53.6*3.8                         44.6*5.5

8 62.7*4                             53.6*5

NO.3

STAR 

 Series outer size(mm)    Inner size(mm)

 56.8*46.4*4.3                   47.4*37.1*6

 NO.4

Hexagon

Series outer size(mm)    Inner size(mm)

             40.5*36.1*53.8     39.7*35.5*22.9

             51*45.5*60           50*45*35 5.3

triangular tube