Tube diameter Axle diameterTube lengthwall thicknessTube materialSurface tretment Φ20 Φ6 50-400 1.0 carbon steel stainless steel PVC pipe Aluminum pipe zinc-plated chromeplate Nickel-plated Rubber-covered Φ25 Φ8 50-600 1.0 carbon steelstainless steel PVC pipe Aluminum pipe zinc-platedchromeplate Nickel-plated Rubber-covered Φ38 Φ12 50-800 1.5 carbon steelstainless steel PVC pipe Aluminum pipe zinc-platedchromeplate Nickel-plated Rubber-covered Φ50 Φ12 50-1000 1.5 carbon steelstainless steel PVC pipe Aluminum pipe zinc-platedchromeplate Nickel-plated Rubber-covered Φ57 Φ12 50-1000 1.5 carbon steelstainless steel PVC pipe Aluminum pipe zinc-platedchromeplate Nickel-plated Rubber-covered Φ60 Φ12 50-1000 1.5 carbon steelstainless steel PVC pipe Aluminum pipe zinc-platedchromeplate Nickel-plated Rubber-covered