... 3,surface treatment : anodizing or powder coating aluminium extrusion pipe aluminium extrusion tube anodizing or powder coating1,Material:mainly ... ,6060,6463,6082…2,The processing methods including: Aluminium profile extruding,Precise cutting,Straight rectification,Bending,Drilling,Tapping ... China national standard GB/T6892-2006 and Erope standard EN12020-1,2(2001) and american standard AAMA611-98.5,OEM ...