... Design,Quick Sample 4)Architectural Sunshade Architectural Perforated Aluminum Railings-Round Perforations - 45 degree PatternSquare Perforations Straight Row Specification: 1) Material ... , Deburring, Milling, Drilling, Turning, Tapping(threading), Shearing(pressing/punching), Insulation (thermal break), Platic forming(bending/stretching), Hydroforming4) Mechanical Surface Treatment: Grinding ...