semi-automatic expanding bollards
1.inner diameter:220*4mm
2.external diameter:240*280*4mm

semi-automatic expanding bollar

1.pipe diameter:220*4mm

2.inner diameter:220*4mm    external diameter:240*280*4mm

3.rise high:500mm   underground:700mm

4.weight:73kgs

5.Material:steel tube

6.Surface:304 stainless steel