1.dustproof, waterproof, heavy load, turn flexiblily,low noise 2.ISO 9001 proudct 3.both small or large quantity ... LengthTube structureSurface treatmentErecting structureΦ1661.2,1.550-1500PVC,Coat rubber,Carbon steel ,Stainless steel , Aluminium alloy galvanizedchrome plateskin glueplasticinjectiona. ... ,4.080-1500Φ10825,303.5,4.0100-1500 Coat rubber,Carbon steel ,Stainless steel , Φ12730,354.0,4.5200- ...