... surface treatment 3.machining as customers' requirements Anodized aluminum pipe's specification: Radian20 degrees, 25 degrees,35 degrees,etc ... your requestmentSurface treatmentAnodize,silver anodize,black anodize, etc.ApplicationWe make various of aluminum pipes used for Household items, industries ... , not rest easy.C. It's aluminum alloy bent pipe, good for many ways, for example: housedhold, hareware ...