Composite Tube System JY-4000 1.3 layers tube 2.Anti-rust spray 3.10 years ... experience 4.Competitive Price Composite Tube System JY-4000 The basic introduction of composite tube:1Material: thermoplastic(outside)+Iron ... :19.5mm-24mm;4Thickness:0.7mm,0.8mm,1.0mm,1.2mm,1.5mm,2.0mm;5Colors:ivory,beige,black,grey,green ... Facebook/ Twitter/ Skype/ Hotmail: cnszylslgw Composite Tube System JY-4000